62012-Business and domestic software development



Title Company Company Number Date filed Status Publication number
Synchronisation method and apparatus for OFDM symbols Evertz UK Limited 03458137 2004-02-12 Granted GB2398468
Decimating image data Snell Advanced Media Limited 01160119 2004-09-09 Granted GB2418092
Image processing Snell Advanced Media Limited 01160119 2006-01-16 Granted GB2422264
Creation and Compression of Video Data Snell Advanced Media Limited 01160119 2006-05-08 Granted GB2438004
Determining a regional shot change parameter Snell Advanced Media Limited 01160119 2009-05-27 Granted GB2470570
Objective picture quality measurement Snell Advanced Media Limited 01160119 2010-02-19 Granted GB2477956
Methods and apparatus for resampling a spatially sampled attribute of an image Snell Advanced Media Limited 01160119 2010-07-09 Granted GB2481857
Encoding Metadata Describing Preceding Frames / Fields by Modifying Data Defining Pixel Values of a Current Frame / Field Snell Advanced Media Limited 01160119 2012-12-12 Awaiting First Examination GB2509056
Determining aspect ratio for display of video Snell Advanced Media Limited 01160119 2013-01-15 Awaiting Re-examination GB2500296
Video processing Snell Advanced Media Limited 01160119 2013-05-13 Awaiting First Examination GB2514120
Re-timing sampled data Snell Advanced Media Limited 01160119 2013-05-29 Awaiting First Examination GB2514572
Motion image rendering system Snell Advanced Media Limited 01160119 2008-12-09 Granted GB2503833
Image Processing Snell Advanced Media Limited 01160119 2016-06-20 Awaiting First Examination GB2551504
Video signal compression Snell Advanced Media Limited 01160119 1998-01-22 Granted GB2333657
Motion compensated standards conversion Snell Advanced Media Limited 01160119 2000-04-07 Granted GB2361372
Spatial video processing Snell Advanced Media Limited 01160119 2000-04-05 Granted GB2361126
Video scratch repair Snell Advanced Media Limited 01160119 2000-04-07 Granted GB2361133
Composite video signal decoding Snell Advanced Media Limited 01160119 2002-09-12 Granted GB2393061
Improved noise reduction Snell Advanced Media Limited 01160119 2002-07-12 Granted GB2390772
Improved composite decoding Snell Advanced Media Limited 01160119 2002-12-20 Granted GB2396506
Method and apparatus for analysing image data Snell Advanced Media Limited 01160119 2005-07-14 Granted GB2434496
Frequency comparator Snell Advanced Media Limited 01160119 2004-11-26 Granted GB2420667
Compression of image data comprising regions of interest Snell Advanced Media Limited 01160119 2006-02-13 Granted GB2435140
Monitoring and controlling a plurality of equipment modules using SNMP Snell Advanced Media Limited 01160119 2006-04-18 Granted GB2428160
Automatic detection of still frames in video content Snell Advanced Media Limited 01160119 2005-07-22 Granted GB2428924
Composite decoding Snell Advanced Media Limited 01160119 2002-09-12 Granted GB2420671
Video framing control Snell Advanced Media Limited 01160119 2007-08-20 Granted GB2452041
Audio-visual signature, method of deriving a signature and method of comparing audio-visual data Snell Advanced Media Limited 01160119 2008-02-21 Granted GB2457694
A method and apparatus for detecting non-uniform scaling of an image. Snell Advanced Media Limited 01160119 2009-06-11 Granted GB2470942
Repairing Scratch Impairments to an Image Snell Advanced Media Limited 01160119 2010-04-09 Granted GB2479414
A method of modifying an input sequence of temporal television signals Snell Advanced Media Limited 01160119 2008-12-09 Granted GB2466044
Adaptive signal processing Snell Advanced Media Limited 01160119 2011-03-04 Granted GB2488599
Identifying the left and right eye images in a stereoscopic pair using a disparity model. Snell Advanced Media Limited 01160119 2011-03-11 Granted GB2489202
Method of routing analogue or digital audio or visual (AV) data using main and redundant crosspoint modules Snell Advanced Media Limited 01160119 2009-04-09 Granted GB2469333
Re-sampling method and apparatus Snell Advanced Media Limited 01160119 2011-10-14 Granted GB2495553
Selecting motion vectors on the basis of acceleration Snell Advanced Media Limited 01160119 2012-04-04 Awaiting First Examination GB2500909
Interpolation of images Snell Advanced Media Limited 01160119 2012-07-24 Awaiting First Examination GB2505872
Video sequence processing Snell Advanced Media Limited 01160119 2013-04-08 Awaiting First Examination GB2513112
Enhancing perceived sharpness of images Snell Advanced Media Limited 01160119 2013-07-11 Awaiting First Examination GB2516090
Method for generating a warning that a stereoscopic (3D) image sequence has been derived from a two-dimensional (2D) image sequence Snell Advanced Media Limited 01160119 2011-05-13 Granted GB2490886
Method and apparatus for processing a switched audio signal Snell Advanced Media Limited 01160119 2013-11-14 Awaiting First Examination GB2520292
Method and apparatus for managing audio visual, audio or visual content Snell Advanced Media Limited 01160119 2014-02-17 Awaiting First Examination GB2523311
Logo detection by edge matching Snell Advanced Media Limited 01160119 2014-05-13 Awaiting First Examination GB2526102
Indentifying points of interest in an image using maxima and minima Snell Advanced Media Limited 01160119 2012-02-28 Awaiting First Examination GB2499799
Method of comparing audio data Snell Advanced Media Limited 01160119 2008-02-21 Granted GB2487499
Video sequence processing by dissimilarity value processing using a filter aperture decomposed into two or more regions Snell Advanced Media Limited 01160119 2012-04-04 Awaiting First Examination GB2502047
Analysis of stereoscopic images Snell Advanced Media Limited 01160119 2010-03-18 Granted GB2478776
Motion estimation Snell Advanced Media Limited 01160119 2010-04-30 Granted GB2479933
Management of broadcast audio loudness by using time-varying gain control Snell Advanced Media Limited 01160119 2012-11-13 Awaiting First Examination GB2510323
Comparing video sequences using fingerprints Snell Advanced Media Limited 01160119 2016-08-24 Awaiting First Examination GB2553125
Image analysis Snell Advanced Media Limited 01160119 2010-12-16 Granted GB2486483
Video processing method and apparatus for use with a sequence of stereoscopic images Snell Advanced Media Limited 01160119 2011-05-13 Granted GB2546641
Motion image rendering system Snell Advanced Media Limited 01160119 2008-12-09 Granted GB2503832
Detecting stereoscopic images Snell Advanced Media Limited 01160119 2011-05-17 Granted GB2491102
Adjusting occupancies of a set of buffers Snell Advanced Media Limited 01160119 2013-12-10 Awaiting First Examination GB2521149
Multidimensional sampled-signal filter Snell Advanced Media Limited 01160119 2011-08-05 Granted GB2493396
Determining the value of a specified quantile using iterative estimation Snell Advanced Media Limited 01160119 2012-07-26 Awaiting First Examination GB2504341
Image process with spatial periodicity measure Snell Advanced Media Limited 01160119 2012-09-25 Awaiting First Examination GB2506207
Analysis of stereoscopic images Snell Advanced Media Limited 01160119 2011-03-11 Granted GB2534504
Video processing Snell Advanced Media Limited 01160119 2013-05-13 Awaiting First Examination GB2514334
Image processing Snell Advanced Media Limited 01160119 2013-05-28 Awaiting First Examination GB2514557
Method and apparatus for ordering images Snell Advanced Media Limited 01160119 2016-09-09 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2553775
Hash-based media search Snell Advanced Media Limited 01160119 2014-06-24 Awaiting First Examination GB2527528
Monitoring audio-visual content with captions Snell Advanced Media Limited 01160119 2016-04-18 Awaiting First Examination GB2556612
Digital rights management Oracle Corporation UK Limited 01782505 2001-05-23 Granted GB2367925
Digital rights management Oracle Corporation UK Limited 01782505 2001-06-05 Granted GB2397673
Digital rights management billing for a wireless device Oracle Corporation UK Limited 01782505 2001-05-23 Granted GB2400952
Search engine allowed access to encrypted data Oracle Corporation UK Limited 01782505 2001-05-23 Granted GB2367668
Digital rights management Oracle Corporation UK Limited 01782505 2001-06-05 Granted GB2372354
Logging access to digital content Oracle Corporation UK Limited 01782505 2001-06-05 Granted GB2397916
Search engine and digital rights management Oracle Corporation UK Limited 01782505 2001-05-23 Granted GB2400707
Mobile device policy enforcement Sophos Limited 02096520 2016-06-30 Awaiting Re-examination GB2551813
Honeypot network services Sophos Limited 02096520 2017-01-12 Awaiting First Examination GB2547102
Evaluating installers and installer payloads Sophos Limited 02096520 2017-01-20 Awaiting First Examination GB2548211
Labeling computing objects for improved threat detection Sophos Limited 02096520 2015-09-14 Granted GB2545621
A Method and system for network access control based on traffic monitoring and vulnerability detection using process related information Sophos Limited 02096520 2015-12-18 Awaiting First Examination GB2548270
Monitoring variations in observable events for threat detection Sophos Limited 02096520 2015-12-02 Awaiting Re-examination GB2555690
Monitoring variations in observable events for threat detection Sophos Limited 02096520 2015-12-02 Awaiting Re-examination GB2555691
Labeling computing objects for improved threat detection Sophos Limited 02096520 2015-09-14 Pending GB2558811
Labeling computing objects for improved threat detection Sophos Limited 02096520 2015-09-14 Pending GB2558812
Method and apparatus for filtering electronic mail Sophos Limited 02096520 2003-08-19 Granted GB2405229
Secure access to user data in cloud computing facilities via proxy authentication server Sophos Limited 02096520 2013-07-12 Awaiting First Examination GB2506237
Threat detection through the accumulated detection of threat characteristics Sophos Limited 02096520 2013-03-05 Granted GB2507360
Forensic analysis of computing activity Sophos Limited 02096520 2016-06-17 Awaiting Re-examination GB2549545
Elastic outbound gateway Sophos Limited 02096520 2016-06-30 Pending GB2551792
Virtual machine security Sophos Limited 02096520 2017-02-09 Awaiting First Examination GB2548700
Monitoring variations in observable events for threat detection Sophos Limited 02096520 2015-12-02 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2554159
Labeling computing objects for improved threat detection Sophos Limited 02096520 2015-09-14 Granted GB2552632
Encryption techniques Sophos Limited 02096520 2016-06-17 Granted GB2552438
Emulating transparent file processing Sophos Limited 02096520 2016-03-31 Awaiting First Examination GB2538613
Combined security and QOS coordination among devices Sophos Limited 02096520 2016-06-10 Awaiting Re-examination GB2551200
Mitigation of anti-sandbox malware techniques Sophos Limited 02096520 2016-06-17 Awaiting Re-examination GB2543602
Labelling network flows according to source applications Sophos Limited 02096520 2016-06-17 Pending GB2549807
Cloud storage scanner Sophos Limited 02096520 2016-06-28 Awaiting Re-examination GB2551735
Endpoint malware detection using an event graph Sophos Limited 02096520 2016-06-29 Awaiting Re-examination GB2551972
Providing virtual machines with redundant security programming for autonomous operation Sophos Limited 02096520 2013-06-20 Awaiting First Examination GB2504841
Identifying and remediating phishing security weaknesses Sophos Limited 02096520 2017-08-02 Awaiting First Examination GB2553427
Mitigation of return-oriented programming attacks Sophos Limited 02096520 2017-08-03 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2555517
Boot security Sophos Limited 02096520 2016-06-17 Awaiting First Examination GB2549546
Network security Sophos Limited 02096520 2016-06-20 Awaiting Re-examination GB2551400
Content leakage protection Sophos Limited 02096520 2016-06-29 Awaiting Re-examination GB2551754
Perimeter encryption Sophos Limited 02096520 2016-06-30 Awaiting Re-examination GB2551983
Central virus checker for computer network. Sophos PLC 02096520 1993-10-29 Terminated GB2283341
Classifying software as malware using characteristics (or "genes") Sophos PLC 02096520 2007-06-19 Terminated GB2439806
Mitigation of anti-sandbox malware techniques Sophos PLC 02096520 2016-10-18 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2558826
In-context exact matching of lookup segment to translation memory source text SDL plc 02675207 2009-10-27 Terminated GB2474839
Natural language translation system SDL plc 02675207 2004-08-11 Terminated GB2417103
Computer assisted natural language translation outputs selectable target text associated in bilingual corpus with input target text from partial translation SDL plc 02675207 2009-03-02 Terminated GB2468278
A computer-based system and method for providing multiple choice examinations UNICORN TRAINING GROUP LIMITED 02740509 2001-02-16 Ceased GB2373624
Call centre dialling management system Noetica Ltd 03319396 2002-10-29 Granted GB2385487
Live person detection in an automated calling system Noetica Ltd 03319396 2013-05-10 Awaiting First Examination GB2513924
SAP (RTM) system with partitioning of data in SAP memory into data intervals Basis Technologies International Limited 04809598 2012-08-08 Terminated GB2504738
Method and apparatus for implementing changes within a data system Basis Technologies International Limited 04809598 2013-08-13 Terminated GB2512958
Load balancing in a data processing system Basis Technologies International Limited 04809598 2012-08-08 Granted GB2504812
A method and apparatus for searching a system with multiple discrete data stores Basis Technologies International Limited 04809598 2013-05-23 Terminated GB2514404
Load balancing in SAP (RTM) system Basis Technologies International Limited 04809598 2012-08-08 Granted GB2504737
Simulating a multi-processor system using cycle accurate or cycle approximate simulation Imperas Ltd 05329674 2006-07-07 Terminated GB2436631
Method of simulating a multi-processor system in which all the system code is translated into native code at runtime using two different dictionaries. Imperas Ltd 05329674 2007-07-06 Terminated GB2440037
Fishing scope Revcad Ltd. 06347210 2007-01-30 Terminated GB2446206
Monitoring the operation of a prime mover BL Systems Limited 06916192 1983-01-15 Terminated GB2133547
Method of radio-labelling biomolecules Vistatec York Ltd 07107639 2003-02-11 Terminated GB2388605
Internet based check in system and baggage drop PULSE AERO LIMITED 08251078 2011-03-22 Terminated GB2479051
Bass compressor Cirrus Logic International Semiconductor Ltd. SC495735 2002-07-30 Granted GB2391439
Transconductance amplifiers Cirrus Logic International Semiconductor Ltd. SC495735 2002-09-10 Granted GB2393055
An overtemperature detector for integrated circuits, using current comparison Cirrus Logic International Semiconductor Ltd. SC495735 2002-10-01 Granted GB2393867
Word length reduction circuit Cirrus Logic International Semiconductor Ltd. SC495735 2003-12-05 Granted GB2408858
Power supply circuit for portable battery powered device Cirrus Logic International Semiconductor Ltd. SC495735 2005-07-13 Granted GB2416606
Ambient noise reduction arrangement Cirrus Logic International Semiconductor Ltd. SC495735 2006-01-26 Granted GB2434708
Mems device Cirrus Logic International Semiconductor Ltd. SC495735 2006-02-24 Granted GB2435544
Digital circuit arrangements for ambient noise-reduction Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2437772
Light source protection circuit Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-21 Granted GB2440186
LED driver with current source Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-21 Granted GB2436404
An audio amplifier operable to drive either headphones or a line output Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2444988
Variable power supplies for efficient amplification, using charge pumps Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2446843
Frequency locked loop with word length reduction in the forward path Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-31 Granted GB2451475
Mems process and device Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-17 Granted GB2451909
Digital to analogue converter circuits and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2007-09-06 Granted GB2452521
Mems device and process Cirrus Logic International Semiconductor Ltd. SC495735 2007-09-19 Granted GB2453104
Ambient noise-reduction system Cirrus Logic International Semiconductor Ltd. SC495735 2007-11-13 Granted GB2456501
Dynamic range controller Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-19 Granted GB2455742
A load discrimination circuit for an audio amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-28 Granted GB2456005
Equalising phase for switched capacitor circuit operation Cirrus Logic International Semiconductor Ltd. SC495735 2008-03-31 Granted GB2458902
Interactive block-diagram for configuration of electronic device Cirrus Logic International Semiconductor Ltd. SC495735 2008-04-23 Granted GB2462997
Mems transducers Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2459863
Amplifier Circuit Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2459865
Active noise cancellation system with split digital filter Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455821
Noise cancellation system Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-27 Granted GB2461315
A noise-shaped pulse shuffler for a double-sided pulse-width modulator Cirrus Logic International Semiconductor Ltd. SC495735 2005-01-17 Granted GB2449591
Testing MEMS capacitive transducers Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466785
Sample rate converter with gain and error adjustment Cirrus Logic International Semiconductor Ltd. SC495735 2008-10-13 Granted GB2464169
Audio circuit Cirrus Logic International Semiconductor Ltd. SC495735 2009-07-24 Granted GB2469345
Mems transducers Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2469410
DC-DC converter circuit which overcomes the problem of stressing switches Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2479445
Charge pump circuit and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2478457
Ambient noise-reduction control system Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-01 Granted GB2479672
DC-DC converter having inhibited low side switch Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2483002
Control of DC-DC converters in valley current mode Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2483003
Digital signal routing circuit Cirrus Logic International Semiconductor Ltd. SC495735 2012-05-25 Granted GB2491263
An audio DAC with signal-dependent clock rate for optimal noise and distortion performance Cirrus Logic International Semiconductor Ltd. SC495735 2012-10-26 Granted GB2507332
Detection circuit Cirrus Logic International Semiconductor Ltd. SC495735 2012-12-27 Granted GB2509316
Signal processing for MEMS capacitive transducers Cirrus Logic International Semiconductor Ltd. SC495735 2013-04-26 Granted GB2513406
Signal envelope processing Cirrus Logic International Semiconductor Ltd. SC495735 2013-07-05 Granted GB2515819
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2013-07-05 Granted GB2515836
Activating speech processing Cirrus Logic International Semiconductor Ltd. SC495735 2013-12-18 Granted GB2524222
Processing received speech data Cirrus Logic International Semiconductor Ltd. SC495735 2013-12-18 Granted GB2523984
Biasing circuitry for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2013-12-19 Granted GB2521416
Class D amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2014-08-29 Granted GB2529691
Low power bidirectional bus Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-11 Granted GB2536309
Identification of modules on a bus Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-18 Granted GB2536310
Loudspeaker protection Cirrus Logic International Semiconductor Ltd. SC495735 2015-06-09 Granted GB2534950
Temperature sensing with feedback digital-analog converter (DAC) of delta-sigma modulator Cirrus Logic International Semiconductor Ltd. SC495735 2015-09-16 Awaiting Re-examination GB2541252
Cascaded integrator-comb filter as a non-integer sample rate converter Cirrus Logic International Semiconductor Ltd. SC495735 2016-01-13 Awaiting Re-examination GB2544565
Speech recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2531964
Multi-channel microphone mapping Cirrus Logic International Semiconductor Ltd. SC495735 2014-09-10 Awaiting First Examination GB2534725
Integrated MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-01 Awaiting Re-examination GB2546830
Synchronous differential signaling protocol Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-20 Awaiting Applicant's Response GB2541772
Piched doped well for a junction filed effect transistor (JFET) isolated from the substrate Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-13 Awaiting Re-examination GB2549344
Packaging for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-10 Granted GB2538177
Voice user interface Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-29 Awaiting Re-examination GB2551209
Method and wafer for fabricating transducer devices Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Awaiting Re-examination GB2550978
Audio signal processing Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Awaiting Re-examination GB2549810
Speech recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2542268
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-04 Awaiting Re-examination GB2552555
Package for MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-01 Pending GB2555659
Digital accessory interface calibration Cirrus Logic International Semiconductor Ltd. SC495735 2014-12-02 Granted GB2542970
Mems device Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-17 Pending GB2557367
Noise reduction in voltage reference signal Cirrus Logic International Semiconductor Ltd. SC495735 2017-04-27 Pending GB2557374
Ear interface detection Cirrus Logic International Semiconductor Ltd. SC495735 2017-05-05 Pending GB2555667
Improved phase/frequency detector and phase lock loop circuit Cirrus Logic International Semiconductor Ltd. SC495735 2003-04-14 Granted GB2400760
Class D amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2003-09-15 Granted GB2406008
Clock synchroniser Cirrus Logic International Semiconductor Ltd. SC495735 2003-12-17 Granted GB2409383
Clock synchroniser and clock and data recovery apparatus and method Cirrus Logic International Semiconductor Ltd. SC495735 2004-04-06 Granted GB2413043
Analogue selector circuit with reduced signal level dependent distortion Cirrus Logic International Semiconductor Ltd. SC495735 2002-11-26 Granted GB2395849
Amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2003-11-26 Granted GB2408644
Analogue to digital converter Cirrus Logic International Semiconductor Ltd. SC495735 2004-10-11 Granted GB2419047
Digital-to-analogue converter circuits Cirrus Logic International Semiconductor Ltd. SC495735 2003-12-05 Granted GB2408859
Low noise op amp Cirrus Logic International Semiconductor Ltd. SC495735 2005-01-18 Granted GB2412260
Feedback controller for PWM amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2005-08-17 Granted GB2429351
Digital audio communications in a digital audio convergence device such as a smartphone Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2432765
Signal processors and associated methods Cirrus Logic International Semiconductor Ltd. SC495735 2003-12-09 Granted GB2409389
Pulse width modulator quantisation circuit Cirrus Logic International Semiconductor Ltd. SC495735 2005-01-17 Granted GB2425668
Switched capacitor DAC Cirrus Logic International Semiconductor Ltd. SC495735 2005-04-19 Granted GB2425416
Ambient noise-reduction control system Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-01 Granted GB2436657
Temperature sensing apparatus and methods Cirrus Logic International Semiconductor Ltd. SC495735 2002-10-01 Granted GB2425419
Amplifier circuit and method of starting and stopping Cirrus Logic International Semiconductor Ltd. SC495735 2006-07-14 Granted GB2440188
Amplifier apparatus and method Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2441360
Suppressing power-down transients in an audio circuit Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2441362
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2432759
Improvements in tone-boost audio circuits Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-21 Granted GB2445007
Charge pump circuit and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2444984
Charge pump circuit with dual rail output Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2444985
Electronic information device with event notification Cirrus Logic International Semiconductor Ltd. SC495735 2007-01-26 Granted GB2434720
Ambient noise reduction system with a limited family of responses Cirrus Logic International Semiconductor Ltd. SC495735 2007-02-07 Granted GB2441835
Processing of stereo audio signals Cirrus Logic International Semiconductor Ltd. SC495735 2004-10-18 Granted GB2419265
Synchronising circuit to output a control signal based on either first or second clock signals Cirrus Logic International Semiconductor Ltd. SC495735 2007-04-25 Granted GB2450862
word length reduction circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-31 Granted GB2451474
Locked loop circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-31 Granted GB2451476
Mems package Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-17 Granted GB2451908
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451524
Amplifier circuit and method of amplfying a signal in an amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-10-31 Granted GB2451530
Split rail dc-dc converter circuit Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2441358
Amplifier apparatus and method Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2441363
Charge pump circuit and methods of operation thereof and portable audio apparatus including charge pump circuits Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-11 Granted GB2455524
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2443990
Digital-to-analogue converter Cirrus Logic International Semiconductor Ltd. SC495735 2003-12-05 Granted GB2430819
Class G amplifier with switched mode power supply Cirrus Logic International Semiconductor Ltd. SC495735 2008-04-09 Granted GB2451536
Mems transducer Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2459866
Level shifting charge pump power supply Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2447426
Dynamic element matching stage for DAC. Cirrus Logic International Semiconductor Ltd. SC495735 2007-01-31 Granted GB2436180
In an active noise cancellation system filter coefficients are chosen according to the resonant frequency of the loudspeaker Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455825
Gain calibration based on device properties Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455826
Noise-canceling ear-worn speaker devices with vents to bypass seals Cirrus Logic International Semiconductor Ltd. SC495735 2007-02-16 Granted GB2445388
Stress free MEMS transducer Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-20 Granted GB2444123
Class D amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2003-09-15 Granted GB2435559
Multiple output DC-to-DC converter Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-31 Granted GB2451470
Method of operating a digital audio device Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2432758
MEMES capacitive microphone Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-20 Granted GB2452876
MEMS process and device Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-20 Granted GB2452650
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451525
A switching power converter with controllable switch size for reduced switch losses Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451526
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451527
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451528
An audio amplifier with a tracking power supply and a digital signal delay equal to the power supply response time Cirrus Logic International Semiconductor Ltd. SC495735 2007-08-30 Granted GB2451529
Circuits for biasing/charging high impedance loads Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466774
Charge pump circuits Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466775
MEMS transducer device and fabrication process Cirrus Logic International Semiconductor Ltd. SC495735 2007-09-19 Granted GB2452941
Delay-locked loop circuits Cirrus Logic International Semiconductor Ltd. SC495735 2006-02-01 Granted GB2434930
Filter Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-21 Granted GB2455806
Current mode switching regulator Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-26 Granted GB2437556
A "pass circuit" divides a bus into two sections; in a first mode signals can pass between the sections, but in a second mode the sections are isolated Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2445485
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2444191
Audio device and method Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2443989
Power management apparatus and methods Cirrus Logic International Semiconductor Ltd. SC495735 2009-07-22 Granted GB2472051
Control of DC-DC converters in valley current mode Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2472111
Level-shifter circuit Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2472113
Current limiting in a DC-DC converter Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2472115
Reduced leakage current in a MEMS device Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-14 Granted GB2460060
Lower rate emulation Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455822
Active noise cancellation filter cut-off frequency adjusted in accordance with magnitude of filter output signal Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455823
Slow rate adaption Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455828
MEMS transducer Cirrus Logic International Semiconductor Ltd. SC495735 2009-02-13 Granted GB2467848
Amplifier apparatus and method Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2441361
Sample rate converter Cirrus Logic International Semiconductor Ltd. SC495735 2008-10-13 Granted GB2456360
MEMS ultrasonic transducer array Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2469411
MEMS ultrasonic transducer array Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2469412
Charge pump circuit and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2472701
Digital filter arrangement for ambient noise reduction, using an oversampled audio signal Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2470680
Digital circuit arrangements for ambient noise-reduction Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2470681
Fabrication of MEMS capacitive microphone Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-20 Granted GB2452877
Frequency generation Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-29 Granted GB2466521
High impedance semiconductor diode structure Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466643
Apparatus and method for biasing a transducer Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466648
Callibration circuit and asociated method Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-05 Granted GB2446844
Mems device Cirrus Logic International Semiconductor Ltd. SC495735 2006-02-24 Granted GB2455214
Dual output charge pump circuit having two flying capacitors Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-23 Granted GB2486701
MEMS transducer Cirrus Logic International Semiconductor Ltd. SC495735 2009-02-13 Granted GB2467777
Feedforward ambient noise reduction Cirrus Logic International Semiconductor Ltd. SC495735 2007-01-25 Granted GB2445984
Noise cancelling earphones with sound leakage channels Cirrus Logic International Semiconductor Ltd. SC495735 2011-04-14 Granted GB2486288
Mems process and device Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-20 Granted GB2436460
Short circuit protection Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-30 Granted GB2447875
A silence detector for digital audio bit streams Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-30 Granted GB2447985
Noise control circuit for audio signals with variable gain stages Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-01 Granted GB2479673
Cellular phone handset with selectable ambient noise reduction Cirrus Logic International Semiconductor Ltd. SC495735 2007-05-09 Granted GB2449083
Power management apparatus and methods Cirrus Logic International Semiconductor Ltd. SC495735 2009-07-22 Granted GB2472050
Improved buck-boost converter Cirrus Logic International Semiconductor Ltd. SC495735 2007-06-07 Granted GB2449914
Silence pattern detector for digital audio bit streams Cirrus Logic International Semiconductor Ltd. SC495735 2007-03-30 Granted GB2482444
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2011-11-11 Granted GB2491913
A digital offset-cancelling loop for a class-D amplifier Cirrus Logic International Semiconductor Ltd. SC495735 2011-11-18 Granted GB2496664
Switched power regulator having estimated error signal Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2472114
Control sequencer for an audio codec Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-25 Granted GB2451265
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2009-11-13 Granted GB2487310
Amplifier circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-28 Granted GB2465695
Multiplexed DC offset compensation Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-16 Granted GB2488455
A bit-flipping sigma-delta modulator with noise control Cirrus Logic International Semiconductor Ltd. SC495735 2003-09-15 Granted GB2438774
Configurable digital mixing of time division multiplexed concurrent paths using a multiply-accumulator Cirrus Logic International Semiconductor Ltd. SC495735 2012-05-25 Granted GB2491261
Digital signal routing circuit Cirrus Logic International Semiconductor Ltd. SC495735 2012-05-25 Granted GB2491264
Analogue-to-digital converter Cirrus Logic International Semiconductor Ltd. SC495735 2012-05-30 Granted GB2502557
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2007-09-19 Granted GB2453105
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2012-09-24 Granted GB2506171
MEMS device Cirrus Logic International Semiconductor Ltd. SC495735 2006-02-24 Granted GB2443756
Digital audio communication in a digital audio convergence device such as a smartphone Cirrus Logic International Semiconductor Ltd. SC495735 2005-11-26 Granted GB2444190
Digital filter arrangement for ambient noise reduction, using an oversampled audio signal Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2470679
Digital circuit arrangements for ambient noise-reduction Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2470682
LED driver with current source and shunt path Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-21 Granted GB2452791
Digital circuit arrangements for ambient noise-reduction Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2446966
Real time clock Cirrus Logic International Semiconductor Ltd. SC495735 2008-03-20 Granted GB2457513
Control of a noise cancellation system according to a detected position of an audio device Cirrus Logic International Semiconductor Ltd. SC495735 2010-10-21 Granted GB2484722
Electronic information device with event notification Cirrus Logic International Semiconductor Ltd. SC495735 2007-01-26 Granted GB2445889
Capacitive transducer circuit and method Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-07 Granted GB2459862
Noise-cancelling ear-worn speaker-carrying devices with vents to bypass seals and cancel sound leakage Cirrus Logic International Semiconductor Ltd. SC495735 2007-02-16 Granted GB2446982
Cable inlet structure for an earphone Cirrus Logic International Semiconductor Ltd. SC495735 2013-04-09 Granted GB2505979
Microphone biasing circuitry and method thereof Cirrus Logic International Semiconductor Ltd. SC495735 2013-04-11 Granted GB2512918
SNR dependent gain Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2455827
DC offset compensation Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-16 Granted GB2485620
Charge pump circuit Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-23 Granted GB2486698
Speech Recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2515526
Speech Recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2515527
Speech Recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2515528
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2009-11-13 Granted GB2475632
Read-out for MEMS capacitive transducers Cirrus Logic International Semiconductor Ltd. SC495735 2013-08-02 Granted GB2516878
Applying a test signal to a node of a signal path via a parasitic capacitance Cirrus Logic International Semiconductor Ltd. SC495735 2008-12-30 Granted GB2466777
MEMS device Cirrus Logic International Semiconductor Ltd. SC495735 2006-02-24 Granted GB2454603
Noise-cancelling ear-worn speaker-carrying devices with vents to bypass seals and cancel sound leakage Cirrus Logic International Semiconductor Ltd. SC495735 2007-02-16 Granted GB2454605
Headphone device Cirrus Logic International Semiconductor Ltd. SC495735 2011-07-15 Granted GB2492959
Noise reduction system for earphones controlled by incoming telephone calls Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-01 Granted GB2479675
Switched mode DC-DC converter having slope compensation circuitry Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2482424
DC-DC converter circuit using four switches Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2484010
Multiple output DC-to-DC converter Cirrus Logic International Semiconductor Ltd. SC495735 2007-07-31 Granted GB2484012
Temperature monitoring for loudspeakers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-06 Granted GB2526881
Packaging for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-10 Granted GB2529134
Noise cancellation method and system applying gain control to a wanted audio signal Cirrus Logic International Semiconductor Ltd. SC495735 2009-06-05 Granted GB2467984
Active noise cancellation system with wind noise reduction Cirrus Logic International Semiconductor Ltd. SC495735 2012-03-16 Granted GB2500251
Ambient noise reduction system Cirrus Logic International Semiconductor Ltd. SC495735 2008-02-06 Granted GB2460972
Improvements relating to DC-DC converters Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2472112
Split filter Cirrus Logic International Semiconductor Ltd. SC495735 2008-06-16 Granted GB2465064
Codec with status report queue ordered according to priority assigned to status reports Cirrus Logic International Semiconductor Ltd. SC495735 2009-11-13 Granted GB2465465
Digital circuit arrangements for ambient noise-reduction Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-12 Granted GB2465681
Digital accessory interface Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-11 Granted GB2538245
Digital accessory interface calibration Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-11 Granted GB2538246
Drive circuit Cirrus Logic International Semiconductor Ltd. SC495735 2007-12-11 Granted GB2467450
Interface Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-17 Granted GB2489902
Analog-to-digital converter (ADC) dynamic range enhancement for voice-activated systems Cirrus Logic International Semiconductor Ltd. SC495735 2015-08-26 Awaiting Re-examination GB2537697
Loudspeaker protection Cirrus Logic International Semiconductor Ltd. SC495735 2015-09-02 Granted GB2539725
Sensor input recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-07-10 Granted GB2526980
Dual processing paths for differential mode and common mode signals for an adaptable analog-to-digital converter (ADC) topology Cirrus Logic International Semiconductor Ltd. SC495735 2015-09-17 Awaiting Re-examination GB2541253
Noise cancellation system Cirrus Logic International Semiconductor Ltd. SC495735 2012-02-21 Granted GB2530678
Digital/analogue conversion Cirrus Logic International Semiconductor Ltd. SC495735 2012-10-19 Granted GB2507096
High order correction for pulse width modulation (PWM) digital/analog converters with reduced computation Cirrus Logic International Semiconductor Ltd. SC495735 2016-01-13 Awaiting Re-examination GB2544566
MEMS devices and processes Cirrus Logic International Semiconductor Ltd. SC495735 2016-01-25 Awaiting Re-examination GB2537005
Phase locked loops Cirrus Logic International Semiconductor Ltd. SC495735 2016-01-29 Awaiting Re-examination GB2545752
Crosstalk mitigation Cirrus Logic International Semiconductor Ltd. SC495735 2016-02-16 Awaiting Re-examination GB2545753
Stress decoupling in MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-01 Awaiting Re-examination GB2546829
Clamping audio signal paths Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-07 Granted GB2547730
Microphone biasing circuitry and method thereof Cirrus Logic International Semiconductor Ltd. SC495735 2013-04-11 Granted GB2535354
High density capacitors formed from thin vertical semiconductor structures such as FinFETs Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-05 Awaiting Re-examination GB2539774
Mems device and process Cirrus Logic International Semiconductor Ltd. SC495735 2008-05-14 Granted GB2470506
Ring frequency divider Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-20 Awaiting Re-examination GB2540659
Analog-to-digital converter Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2541079
Current sense amplifier with enchanced common mode input range Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-08 Awaiting Re-examination GB2544836
Switch mode DC-DC converter having power switch control Cirrus Logic International Semiconductor Ltd. SC495735 2010-09-10 Granted GB2478170
Audio enhancement Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-24 Awaiting Re-examination GB2540673
Digital microphones Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Awaiting Applicant's Response GB2547734
Voice command triggered speech enhancement Cirrus Logic International Semiconductor Ltd. SC495735 2014-12-17 Awaiting First Examination GB2536836
Earphone Cirrus Logic International Semiconductor Ltd. SC495735 2010-12-10 Granted GB2486268
Sensor input recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-07-10 Granted GB2516075
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-31 Pending GB2554470
MEMS device with increased robustness and resilience to acoustic shock Cirrus Logic International Semiconductor Ltd. SC495735 2013-08-21 Granted GB2506979
Microphone biasing circuitry and method thereof Cirrus Logic International Semiconductor Ltd. SC495735 2013-04-11 Granted GB2542965
Methods and apparatus for authentication in an electronic device Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-20 Pending GB2555660
Methods and apparatus for biometric authentication in an electronic device Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-20 Pending GB2555661
Audio amplifer circuit and electronic apparatus including the same Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2475633
Amplifier circuit and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2475636
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-19 Awaiting Re-examination GB2547103
Data encoding detection Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-20 Pending GB2557691
Audio transfer Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-23 Pending GB2558009
Controlling an audio system Cirrus Logic International Semiconductor Ltd. SC495735 2017-04-28 Pending GB2559212
Voice user interface Cirrus Logic International Semiconductor Ltd. SC495735 2017-06-06 Pending GB2552082
Charge pump circuit and methods of operation thereof Cirrus Logic International Semiconductor Ltd. SC495735 2006-12-22 Granted GB2478458
Analog-to-digital converter Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2551459
Auto-mute audio processing Cirrus Logic International Semiconductor Ltd. SC495735 2017-09-29 Pending GB2559223
Direct mapping Cirrus Logic International Semiconductor Ltd. SC495735 2017-09-29 Pending GB2559224
Loudspeaker protection systems and methods Cirrus Logic International Semiconductor Ltd. SC495735 2014-01-24 Granted GB2522449
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-03-14 Awaiting Re-examination GB2557755
Noise reduction system for earphones controlled by a timer Cirrus Logic International Semiconductor Ltd. SC495735 2006-04-01 Granted GB2479674
Low noise amplifier for MEMS capacitive transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-05-02 Granted GB2525674
DC-DC converter circuits and methods and apparatus including such circuits Cirrus Logic International Semiconductor Ltd. SC495735 2006-08-31 Granted GB2484198
Integrated MEMS transducer and circuitry Cirrus Logic International Semiconductor Ltd. SC495735 2014-07-31 Awaiting Re-examination GB2528872
Clock generator Cirrus Logic International Semiconductor Ltd. SC495735 2011-11-21 Granted GB2496673
Audio device Cirrus Logic International Semiconductor Ltd. SC495735 2009-11-13 Granted GB2487301
Improvements relating to DC-DC converters Cirrus Logic International Semiconductor Ltd. SC495735 2009-10-27 Granted GB2486827
Earphone Cirrus Logic International Semiconductor Ltd. SC495735 2011-04-14 Granted GB2516785
Digital accessory interface Cirrus Logic International Semiconductor Ltd. SC495735 2014-10-31 Granted GB2531803
Improved analogue-to-digital convertor Cirrus Logic International Semiconductor Ltd. SC495735 2014-11-04 Awaiting Re-examination GB2532015
Active noise cancellation earphones with ear canal leakage error microphone Cirrus Logic International Semiconductor Ltd. SC495735 2012-02-21 Granted GB2499607
MEMS devices and processes Cirrus Logic International Semiconductor Ltd. SC495735 2014-12-19 Granted GB2533410
Mixing audio data samples using multiply-accumulate blocks and ping-pong buffers Cirrus Logic International Semiconductor Ltd. SC495735 2012-05-25 Granted GB2491262
Transmitting signals between modules Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-18 Granted GB2539178
Loudspeaker protection Cirrus Logic International Semiconductor Ltd. SC495735 2015-06-09 Granted GB2534949
Cable inlet structure for an earphone Cirrus Logic International Semiconductor Ltd. SC495735 2012-09-14 Granted GB2505919
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2012-09-24 Granted GB2506173
Noise cancellation Cirrus Logic International Semiconductor Ltd. SC495735 2012-10-12 Granted GB2506908
Nonlinear acoustic echo cancellation based on transducer impedance Cirrus Logic International Semiconductor Ltd. SC495735 2015-10-08 Granted GB2542210
Noise cancellation system Cirrus Logic International Semiconductor Ltd. SC495735 2012-02-21 Granted GB2530679
Interpretation circuit for a switch unit comprising a plurality of register blocks Cirrus Logic International Semiconductor Ltd. SC495735 2012-12-04 Granted GB2508612
Loudspeaker protection circuitry and methods Cirrus Logic International Semiconductor Ltd. SC495735 2015-12-21 Awaiting Re-examination GB2542643
Methods and apparatuses for configuring a serial interface Cirrus Logic International Semiconductor Ltd. SC495735 2016-02-02 Granted GB2544124
Frequency-dependent sidetones for improved automatic speech recognition,speaker recognition, and occlusion effect correction Cirrus Logic International Semiconductor Ltd. SC495735 2016-02-26 Awaiting Re-examination GB2549065
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-03-14 Awaiting Re-examination GB2546826
Integrated MEMS transducer and circuitry Cirrus Logic International Semiconductor Ltd. SC495735 2016-03-31 Awaiting Re-examination GB2547729
Dynamic frequency-dependent sidetone generation Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-19 Awaiting Re-examination GB2546563
Accessory detection Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-19 Granted GB2544830
Audio signals Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-25 Awaiting Re-examination GB2549805
Current sense amplifier with common mode rejection Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-08 Awaiting Re-examination GB2544835
Monitoring of devices Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Awaiting Re-examination GB2550977
MEMS devices and processes Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Pending GB2551791
Digital microphones Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Awaiting Re-examination GB2547735
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Granted GB2551796
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-04 Pending GB2553154
Methods and apparatus for authentication in an electronic device Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-05 Awaiting Re-examination GB2545534
Methods and apparatus for authentication in an electronic device Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-05 Pending GB2552721
Connectors for data transfer Cirrus Logic International Semiconductor Ltd. SC495735 2016-11-25 Pending GB2552558
Connectors for data transfer Cirrus Logic International Semiconductor Ltd. SC495735 2016-11-25 Pending GB2552559
Class-D Amplifier Circuits Cirrus Logic International Semiconductor Ltd. SC495735 2013-10-23 Granted GB2519540
Reducing instantaneous wind noise Cirrus Logic International Semiconductor Ltd. SC495735 2015-06-01 Awaiting First Examination GB2542058
Speaker recognition Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-23 Pending GB2552722
Speaker recognition Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-23 Pending GB2552723
Packaging for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-10 Granted GB2543443
MEMS device Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-20 Pending GB2558008
Loudspeaker protection Cirrus Logic International Semiconductor Ltd. SC495735 2015-09-02 Awaiting Applicant's Response GB2546682
Sensor input recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-07-10 Granted GB2553040
Speech recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2552280
Speech recognition Cirrus Logic International Semiconductor Ltd. SC495735 2013-06-26 Granted GB2553683
Integrated MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-01 Awaiting Re-examination GB2556263
Digital accessory interface calibration Cirrus Logic International Semiconductor Ltd. SC495735 2014-12-02 Granted GB2532950
Connectors for audio data transfer Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-26 Granted GB2535814
Amplifiers Cirrus Logic International Semiconductor Ltd. SC495735 2015-09-03 Granted GB2540441
Adaptive block matrix using pre-whitening for adaptive beam forming Cirrus Logic International Semiconductor Ltd. SC495735 2015-11-05 Awaiting Re-examination GB2542862
Transfer of control data over half-duplex link Cirrus Logic International Semiconductor Ltd. SC495735 2015-11-10 Pending GB2541757
Adaptive filter control Cirrus Logic International Semiconductor Ltd. SC495735 2015-11-24 Awaiting Re-examination GB2543107
MEMS devices Cirrus Logic International Semiconductor Ltd. SC495735 2016-01-25 Awaiting Re-examination GB2538828
Wind noise reduction Cirrus Logic International Semiconductor Ltd. SC495735 2014-07-11 Awaiting First Examination GB2532379
Digital microphones Cirrus Logic International Semiconductor Ltd. SC495735 2016-02-09 Granted GB2544823
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-03-14 Awaiting Re-examination GB2546827
Voltage-controlled oscillator (VCO) as first stage in an analog-to-digital converter (ADC) in combination with a digital filter for second or higher-order Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-19 Awaiting Re-examination GB2540452
Direct current (DC) and/or alternating current (AC) load detection for audio codec Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-13 Pending GB2547490
Audio Signals Cirrus Logic International Semiconductor Ltd. SC495735 2016-05-25 Pending GB2556015
Packaging for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-10 Granted GB2540034
Dual device semiconductor structures with shared drain Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-07 Awaiting Re-examination GB2548419
Transfer of data with check bits Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-24 Awaiting Applicant's Response GB2543877
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-06-30 Granted GB2551783
MEMS device and process Cirrus Logic International Semiconductor Ltd. SC495735 2016-10-04 Awaiting Re-examination GB2551854
Retaining binaural cues when mixing microphone signals Cirrus Logic International Semiconductor Ltd. SC495735 2015-04-17 Awaiting First Examination GB2540508
Microphone mixing for wind noise reduction Cirrus Logic International Semiconductor Ltd. SC495735 2015-05-26 Awaiting First Examination GB2542961
MEMS devices and processes Cirrus Logic International Semiconductor Ltd. SC495735 2016-12-19 Pending GB2557364
Packaging for MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2014-06-10 Granted GB2542979
Power-saving current-mode digital-to-analog converter (DAC) Cirrus Logic International Semiconductor Ltd. SC495735 2017-01-16 Pending GB2558007
Multi-phase power converter system using multiple amplifier intergrated circuits Cirrus Logic International Semiconductor Ltd. SC495735 2017-05-15 Awaiting Re-examination GB2551442
Transducer packaging Cirrus Logic International Semiconductor Ltd. SC495735 2017-06-29 Pending GB2557381
Mems transducer package Cirrus Logic International Semiconductor Ltd. SC495735 2015-12-04 Awaiting First Examination GB2549877
Mems transducer package Cirrus Logic International Semiconductor Ltd. SC495735 2015-12-04 Awaiting First Examination GB2550298
Microphone unit comprising integrated speech analysis Cirrus Logic International Semiconductor Ltd. SC495735 2015-12-22 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2551916
Single-bit volume control Cirrus Logic International Semiconductor Ltd. SC495735 2017-09-29 Pending GB2559225
Adaptive block matrix using pre-whitening for adaptive beam forming Cirrus Logic International Semiconductor Ltd. SC495735 2015-11-05 Awaiting Re-examination GB2556199
Stress decoupling in MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-01 Awaiting Re-examination GB2556264
Stress decoupling in MEMS transducers Cirrus Logic International Semiconductor Ltd. SC495735 2016-04-01 Awaiting Re-examination GB2556265
Analog-to-digital converter (ADC) dynamic range enhancement for voice-activated systems Cirrus Logic International Semiconductor Limited SC495735 2015-05-29 Awaiting Re-examination GB2537694
Systems and methods for preventing distortion due to supply-based modulation index changes in an audio playback system Cirrus Logic International Semiconductor Limited SC495735 2016-01-12 Awaiting Applicant's Response GB2544822
Multi-path analog front end and analog-to-digital converter for a signal processing system with low-pass filter between paths Cirrus Logic International Semiconductor Limited SC495735 2016-02-09 Awaiting Re-examination GB2545939
Systems and methods for restoring microelectromechanical system transducer operation following plosive event Cirrus Logic International Semiconductor Limited SC495735 2016-05-20 Awaiting Applicant's Response GB2545519
Systems and methods of configuring a filter having at least two frequency response configurations Cirrus Logic International Semiconductor Limited SC495735 2016-05-20 Awaiting Re-examination GB2545520
Removal of switching discontinuity in a hybrid switched mode amplifier Cirrus Logic International Semiconductor Limited SC495735 2016-11-21 Pending GB2548443
Method for limiting amplifier input current to avoid low voltage conditions Cirrus Logic International Semiconductor Limited SC495735 2017-04-20 Pending GB2551621
Fully-differential operational amplifier system Cirrus Logic International Semiconductor Limited SC495735 2017-04-27 Pending GB2553393
Connectors for audio data transfer Cirrus Logic International Semiconductor Limited SC495735 2015-05-26 Granted GB2553875
MEMS transducer package Cirrus Logic International Semiconductor Limited SC495735 2015-12-04 Awaiting First Examination GB2549644
Configurable control loop topology for a pulse width modulation amplifier Cirrus Logic International Semiconductor Limited SC495735 2017-08-04 Pending GB2555679
Efficient boost converter Cirrus Logic International Semiconductor Limited SC495735 2017-08-09 Pending GB2555902
Offset calibration for amplifier and preceding circuit Cirrus Logic International Semiconductor Limited SC495735 2017-08-09 Pending GB2558973
Detection of acoustic impulse events in voice applications using a neural network Cirrus Logic International Semiconductor Limited SC495735 2017-10-10 Pending GB2557425
Analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2013-06-26 Granted GB2553734
Charge pump input current limiter Cirrus Logic International Semiconductor Limited SC495735 2017-10-13 Awaiting First Examination GB2558765
Adaptive receiver Cirrus Logic International Semiconductor Limited SC495735 2016-05-20 Awaiting First Examination GB2555059
Low-power processor with support for multiple precision modes Cirrus Logic International Semiconductor Limited SC495735 2016-06-21 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556492
Circular buffer descriptor for describing and/or accessing a circular buffer Cirrus Logic International Semiconductor Limited SC495735 2016-06-21 Awaiting First Examination GB2557743
Psychoacoustics for improved audio reproduction and speaker protection Cirrus Logic International Semiconductor Limited SC495735 2016-06-24 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556495
Class-D Amplifier Circuits Cirrus Logic International Semiconductor Limited SC495735 2013-10-23 Granted GB2557750
Hybrid adaptive noise cancellation system with filtered error microphone signal Cirrus Logic International Semiconductor Limited SC495735 2015-10-27 Awaiting Re-examination GB2541474
Systems and methods for implementing hysteresis in a comparator Cirrus Logic International Semiconductor Limited SC495735 2016-01-12 Pending GB2545281
Systems and methods for reducing audio artifacts from switching between paths of a multi-path signal processing Cirrus Logic International Semiconductor Limited SC495735 2016-03-02 Awaiting Re-examination GB2546559
Speaker protection from overexcursion Cirrus Logic International Semiconductor Limited SC495735 2016-06-13 Awaiting Applicant's Response GB2550221
Constant on time boost converter control Cirrus Logic International Semiconductor Limited SC495735 2016-06-13 Awaiting Re-examination GB2550222
Amplifier with configurable final output stage Cirrus Logic International Semiconductor Limited SC495735 2016-12-01 Pending GB2557244
Microelectromechanical systems microphone with electrostatic force feedback to measure sound pressure Cirrus Logic International Semiconductor Limited SC495735 2017-01-10 Pending GB2556951
Single signal-variant power supply for a pluarity of amplifiers Cirrus Logic International Semiconductor Limited SC495735 2017-01-20 Pending GB2549571
Encoding for multi-device synchronization of devices Cirrus Logic International Semiconductor Limited SC495735 2017-02-16 Pending GB2554960
Loudspeaker protection systems and methods Cirrus Logic International Semiconductor Limited SC495735 2017-02-21 Pending GB2559204
Clamping audio signal paths Cirrus Logic International Semiconductor Limited SC495735 2017-02-23 Pending GB2547799
Synchronous, internal clock edge alignment for integrated circuit testing Cirrus Logic International Semiconductor Limited SC495735 2017-04-19 Pending GB2549619
Motion detector Cirrus Logic International Semiconductor Limited SC495735 2017-04-26 Pending GB2559427
Mems transducer package Cirrus Logic International Semiconductor Limited SC495735 2015-12-04 Awaiting First Examination GB2549876
Method and apparatus for acoustic crosstalk cancellation Cirrus Logic International Semiconductor Limited SC495735 2017-09-19 Pending GB2556663
Transducer packaging Cirrus Logic International Semiconductor Limited SC495735 2017-10-16 Pending GB2557717
Magnitude compensation technique for processing single-bit wide data Cirrus Logic International Semiconductor Limited SC495735 2016-06-21 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556234
Peak current limiting in inductor-based power converter Cirrus Logic International Semiconductor Limited SC495735 2016-06-19 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556236
Mixing of single-bit and multi-bit audio signals for simultaneous output Cirrus Logic International Semiconductor Limited SC495735 2016-06-21 Awaiting Re-examination GB2557744
Adaptive phase-distortionless magnitude response equalization for beamforming applications Cirrus Logic International Semiconductor Limited SC495735 2016-06-19 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556237
Over-sampling digital processing path that emulates nyquist rate(non oversampling) audio conversion Cirrus Logic International Semiconductor Limited SC495735 2016-06-21 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556238
Class-D Amplifier circuits Cirrus Logic International Semiconductor Limited SC495735 2013-10-23 Granted GB2557050
Class-D amplifier circuits Cirrus Logic International Semiconductor Limited SC495735 2013-10-23 Granted GB2557051
Hybrid finite impulse response filter Cirrus Logic International Semiconductor Limited SC495735 2015-07-21 Awaiting Re-examination GB2539280
Feature extraction Cirrus Logic International Semiconductor Limited SC495735 2015-12-22 Pending GB2535002
Systems and methods for distributed adaptive noise cancellation Cirrus Logic International Semiconductor Limited SC495735 2016-04-05 Awaiting Re-examination GB2542648
Systems and methods for controlling adaptive noise control gain Cirrus Logic International Semiconductor Limited SC495735 2016-04-14 Awaiting Re-examination GB2547956
Hybrid finite impulse response filter Cirrus Logic International Semiconductor Limited SC495735 2015-07-21 Awaiting Re-examination GB2541976
Hybrid switched mode amplifier Cirrus Logic International Semiconductor Limited SC495735 2016-10-07 Pending GB2546576
Detection of acoustic impulse events in voice applications Cirrus Logic International Semiconductor Limited SC495735 2016-11-21 Pending GB2554955
Biasing of electromechanical systems microphone with alternating-current voltage waveform Cirrus Logic International Semiconductor Limited SC495735 2017-01-10 Pending GB2556950
Enhancing dynamic range based on spectral content of signal Cirrus Logic International Semiconductor Limited SC495735 2017-02-16 Pending GB2553166
Reconfiguring paths in a multiple path analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2017-02-17 Pending GB2553867
Class D amplifier circuit Cirrus Logic International Semiconductor Limited SC495735 2014-08-29 Granted GB2550243
Prevention of switching discontinuity in a hybrid switched mode amplifier Cirrus Logic International Semiconductor Limited SC495735 2017-03-03 Pending GB2550019
Generation of voltage reference signals in a hybrid switched mode amplifier Cirrus Logic International Semiconductor Limited SC495735 2017-03-10 Pending GB2550026
Systems and methods for loudspeaker electrical identification with truncated non-causality Cirrus Logic International Semiconductor Limited SC495735 2017-03-20 Pending GB2548716
Flexible membrane Cirrus Logic International Semiconductor Limited SC495735 2017-04-05 Pending GB2558963
Multi-Path digitation based on input signal fidelity and output requirements Cirrus Logic International Semiconductor Limited SC495735 2017-04-27 Pending GB2552867
Speaker identification Cirrus Logic International Semiconductor Limited SC495735 2017-05-04 Pending GB2557375
MEMS device and process Cirrus Logic International Semiconductor Limited SC495735 2017-06-19 Awaiting Re-examination GB2555510
Methods and apparatus for authentication in an electronic device Cirrus Logic International Semiconductor Limited SC495735 2016-10-05 Pending GB2555532
Analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2013-06-26 Granted GB2553472
Analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2013-06-26 Granted GB2553473
Speaker protection excursion oversight Cirrus Logic International Semiconductor Limited SC495735 2017-11-21 Pending GB2559012
Adjustable time duration for driving pulse-width modulation (PWM) output to reduce thermal noise Cirrus Logic International Semiconductor Limited SC495735 2016-06-19 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556233
User input through transducer Cirrus Logic International Semiconductor Limited SC495735 2016-06-28 Pending if pre publication date, "Application Published" if publication date is today or in the past GB2556497
MEMS device and process Cirrus Logic International Semiconductor Limited SC495735 2016-03-14 Awaiting Re-examination GB2556280
Clamping audio signal paths Cirrus Logic International Semiconductor Limited SC495735 2016-04-07 Awaiting Re-examination GB2557489
Systems and methods for reducing artifacts and improving performance of a multi-path analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2015-08-14 Awaiting Re-examination GB2539517
Systems and methods for predictive switching in audio amplifiers Cirrus Logic International Semiconductor Limited SC495735 2016-06-13 Pending GB2555369
Hybrid finite impulse response filter Cirrus Logic International Semiconductor Limited SC495735 2015-07-21 Awaiting Re-examination GB2541977
Enabling very large and very small duty cycles in swicthing converters Cirrus Logic International Semiconductor Limited SC495735 2016-11-11 Awaiting Re-examination GB2545557
Matching paths in a multiple path analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2016-12-01 Pending GB2553864
Adaptation of dynamic range enhancement based on noise floor of signal Cirrus Logic International Semiconductor Limited SC495735 2017-01-10 Pending GB2558005
Amplifier with auxiliary path for maximizing power supply rejection ratio Cirrus Logic International Semiconductor Limited SC495735 2017-01-25 Pending GB2558318
Multi-path analog front end with adaptive path Cirrus Logic International Semiconductor Limited SC495735 2017-02-17 Pending GB2552860
Method and apparatus for acoustic crosstalk cancellation Cirrus Logic International Semiconductor Limited SC495735 2017-03-06 Pending GB2550457
Correction for speaker monitoring Cirrus Logic International Semiconductor Limited SC495735 2017-04-27 Pending GB2554486
Communication protocol adapter Cirrus Logic International Semiconductor Limited SC495735 2017-08-07 Pending GB2555899
Reconfigurable switched mode converter Cirrus Logic International Semiconductor Limited SC495735 2016-04-16 Awaiting First Examination GB2554016
Analog-to-digital converter Cirrus Logic International Semiconductor Limited SC495735 2013-06-26 Granted GB2553474
Speaker adaptation with voltage-to-excursion conversion Cirrus Logic International Semiconductor Limited SC495735 2017-11-21 Pending GB2558764





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