CIRRUS LOGIC INTERNATIONAL (UK) LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H03F AMPLIFIERS 2753
 
 
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 2584
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 23370
 
 
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 2275
 
 
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 1879
 
 
 
G10K SOUND-PRODUCING DEVICES 1310
 
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 12301
 
 
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 877
 
 
 
H03K PULSE TECHNIQUE 8110
 
 
 
H03G CONTROL OF AMPLIFICATION 741

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0078,569 NOISE CANCELLATION SYSTEM WITH LOWER RATE EMULATIONNov 24, 14Mar 19, 15[H04R]
2015/0070,082 CHARGE PUMP CIRCUITNov 14, 14Mar 12, 15[H02M]
2015/0071,466 READ-OUT FOR MEMS CAPACITIVE TRANSDUCERSJul 31, 14Mar 12, 15[H03F, H04R]
2015/0058,024 WIRELESS CELLULAR TELEPHONE WITH AUDIO CODECSep 09, 14Feb 26, 15[H04L, H03M, G10L]
2015/0039,303 SPEECH RECOGNITIONJun 25, 14Feb 05, 15[G10L]
2015/0008,962 SIGNAL ENVELOPE PROCESSINGJul 02, 14Jan 08, 15[G01R]
2014/0341,402 MEMS PROCESS AND DEVICEAug 05, 14Nov 20, 14[H04R, B81B]
2014/0307,910 MICROPHONE BIASING CIRCUITRY AND METHOD THEREOFApr 03, 14Oct 16, 14[H04R]
2014/0169,584 HEADPHONE DEVICEJul 06, 12Jun 19, 14[H04R]
2014/0159,816 AMPLIFIER CIRCUITFeb 18, 14Jun 12, 14[H03G, H03F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,019,012 Amplifier circuit with offset controlNov 14, 12Apr 28, 15[H03F]
9,020,157 Active noise cancellation systemMar 12, 13Apr 28, 15[H03B, A61F, G10K]
8,987,844 MEMS device and processFeb 10, 14Mar 24, 15[H04R, B81C, B81B, H01L]
8,988,149 Amplifier circuit and method of amplifying a signal in an amplifier circuitJul 15, 13Mar 24, 15[H03G, H03F]
8,953,814 Communication apparatus with ambient noise reductionMay 08, 08Feb 10, 15[H04M, H04R, G10K]
8,913,762 Capacitive transducer circuit and methodMay 07, 09Dec 16, 14[G01D, H04R, H03M]
8,908,876 Noise cancellation system with lower rate emulationDec 12, 08Dec 09, 14[G10K]
8,890,604 Charge pump circuitFeb 23, 12Nov 18, 14[H03F, G05F, H02M]
8,854,132 Amplifier circuitNov 09, 12Oct 07, 14[H03F]
8,841,737 MEMS device and processSep 18, 08Sep 23, 14[H04R, B81B, H01L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8,957,731 Amplifier circuit with offset controlWithdrawnNov 14, 12Feb 17, 15[H03F]
5,476,801 Spacer flash cell processExpiredFeb 03, 95Dec 19, 95[H01L]
5,477,103 Sequence, timing and synchronization technique for servo system controller of a computer disk mass storage deviceExpiredJun 04, 93Dec 19, 95[G05B]
5,455,526 Digital voltage shifters and systems using the sameExpiredAug 10, 94Oct 03, 95[H03K]
5,446,765 Apparatus for recovering data and clock information from an encoded serial data streamExpiredAug 17, 94Aug 29, 95[H04L]
5,436,641 Flexible graphics interface for multiple display modesExpiredMar 03, 94Jul 25, 95[G09G]
5,412,669 Add, compare and select circuitExpiredDec 09, 93May 02, 95[G06F]
5,410,547 Video controller IC with built-in test circuit and method of testingExpiredJun 17, 93Apr 25, 95[G06F]
5,396,133 High speed CMOS current switching circuitsExpiredOct 01, 93Mar 07, 95[H03K]
5,311,460 Method and apparatus for performing high speed divide operationsExpiredDec 31, 92May 10, 94[G06F]
5,280,488 Reed-Solomon code system employing k-bit serial techniques for encoding and burst error trappingExpiredNov 08, 90Jan 18, 94[G06F]
5,276,856 Memory controller flexible timing control system and methodExpiredSep 28, 89Jan 04, 94[G11C, G06F]
5,185,602 Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displaysExpiredApr 10, 89Feb 09, 93[G09G]
5,157,618 Programmable tilesExpiredFeb 28, 90Oct 20, 92[G06F]
5,140,595 Burst mode error detection and definitionExpiredOct 04, 90Aug 18, 92[H03M]
5,131,015 Combined BAUD rate generator and digital phase locked loopExpiredOct 22, 90Jul 14, 92[H04L]
5,122,783 System and method for blinking digitally-commanded pixels of a display screen to produce a palette of many colorsExpiredJul 27, 90Jun 16, 92[G09G]
5,032,981 Method for increasing effective addressable data processing system memory spaceExpiredApr 10, 89Jul 16, 91[G06F]
4,979,173 Burst mode error detection and definitionExpiredSep 21, 87Dec 18, 90[G06F, H03K]
4,975,828 Multi-channel data communications controllerExpiredAug 05, 87Dec 04, 90[G06F]

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