CIRRUS LOGIC, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 32411
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 191267
 
  
 
H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS 16718
 
  
 
H03F AMPLIFIERS 15616
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 10159
 
  
 
H03K PULSE TECHNIQUE 8758
 
  
 
G10K SOUND-PRODUCING DEVICES 672
 
  
 
H03G CONTROL OF AMPLIFICATION 6112
 
  
 
H04B TRANSMISSION 54156
 
  
 
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 5251

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0047,412 DETERMINING NOISE AND SOUND POWER LEVEL DIFFERENCES BETWEEN PRIMARY AND REFERENCE CHANNELSOct 11, 17Feb 15, 18[G10L, H04R]
2017/0346,501 ANALOGUE-TO-DIGITAL CONVERTERJul 28, 17Nov 30, 17[H03K, H03M]
2017/0317,580 PEAK CURRENT LIMITING IN INDUCTOR-BASED POWER CONVERTERMay 02, 16Nov 02, 17[H02M]
2017/0294,512 PINCHED DOPED WELL FOR A JUNCTION FIELD EFFECT TRANSISTOR (JFET) ISOLATED FROM THE SUBSTRATEApr 07, 16Oct 12, 17[H01L, B81B]
2017/0245,052 MICROPHONE BIASING CIRCUITRY AND METHOD THEREOFMay 10, 17Aug 24, 17[H04R, H03F]
2017/0153,347 ACCESSORY DETECTIONDec 09, 15Jun 01, 17[H01R, G01R, G01V]
2017/0047,895 SYSTEMS AND METHODS FOR DYNAMIC RANGE ENHANCEMENT USING AN OPEN-LOOP MODULATOR IN PARALLEL WITH A CLOSED-LOOP MODULATOROct 28, 16Feb 16, 17[H03F]
2017/0019,244 DIGITAL ACCESSORY INTERFACEOct 30, 15Jan 19, 17[H04L]
2016/0329,867 AMPLIFIERSMay 08, 15Nov 10, 16[H03F]
2016/0145,093 FULLY DEPLETED REGION FOR REDUCED PARASITIC CAPACITANCE BETWEEN A POLY-SILICON LAYER AND A SUBSTRATE REGIONNov 16, 15May 26, 16[B81C, H04R, B81B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9919913 Fully depleted region for reduced parasitic capacitance between a poly-silicon layer and a substrate regionNov 16, 15Mar 20, 18[B81C, H04R, B81B]
9923574 Analogue-to-digital converterJul 28, 17Mar 20, 18[H03K, H03M]
9917508 Charge pump circuit and methods of operation thereofJan 05, 16Mar 13, 18[H02M]
9917557 Calibration for amplifier with configurable final output stageApr 17, 17Mar 13, 18[H03F, G01R]
9917833 System and method for speaker recognition on mobile devicesMay 22, 15Mar 13, 18[H04L, G10L, H04W]
9910178 Accessory detectionDec 09, 15Mar 06, 18[H04M, H04R, H01R, G01R, G01V]
9912232 Peak current limiting in inductor-based power converterMay 02, 16Mar 06, 18[H02M]
9912238 Determination of inductor current during reverse current in a boost converterFeb 18, 14Mar 06, 18[H02M, G05F]
9912312 Boost converter controller with inductance value determinationFeb 18, 14Mar 06, 18[H02M, G06F, H03F, G01R, H03G]
9906196 Hybrid switched mode amplifierSep 20, 16Feb 27, 18[H04R, H03F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0056,777 ENERGY-EFFICIENT PERSONAL AUDIO DEVICE OUTPUT STAGE WITH SIGNAL POLARITY-DEPENDENT POWER SUPPLY UPDATE RATEAbandonedNov 02, 15Feb 25, 16[H02M, H03F]
2015/0303,171 SYSTEMS AND METHODS FOR CARRYING SINGULATED DEVICE PACKAGESAbandonedApr 20, 15Oct 22, 15[H01L]
2015/0264,762 Controlled Power Dissipation in a Switch Path in a Lighting SystemAbandonedJun 02, 15Sep 17, 15[H05B]
2014/0358,552 LOW-POWER VOICE GATE FOR DEVICE WAKE-UPAbandonedMay 31, 13Dec 04, 14[G06F]
2014/0301,571 SYSTEMS AND METHODS FOR GENERATING A DIGITAL OUTPUT SIGNAL IN A DIGITAL MICROPHONE SYSTEMAbandonedApr 08, 14Oct 09, 14[H04R]
2014/0294,182 SYSTEMS AND METHODS FOR LOCATING AN ERROR MICROPHONE TO MINIMIZE OR REDUCE OBSTRUCTION OF AN ACOUSTIC TRANSDUCER WAVE PATHAbandonedJun 28, 13Oct 02, 14[H04R]
2011/0050,209 METHOD AND APPARATUS FOR UNAMBIGUOUS DETERMINATION OF THE ROTOR POSITION OF AN ELECTRICAL MACHINEAbandonedOct 03, 08Mar 03, 11[G01R]
2008/0272,756 POWER FACTOR CORRECTION CONTROLLER WITH DIGITAL FIR FILTER OUTPUT VOLTAGE SAMPLINGAbandonedDec 31, 07Nov 06, 08[G05F]
7355652 Inverse tracking over two different clock domainsExpiredOct 13, 04Apr 08, 08[H03L]
7194036 Digital data processing circuits and systems with delta-sigma modulator filteringExpiredMar 26, 03Mar 20, 07[H04B]
7187312 Look-ahead delta sigma modulator having an infinite impulse response filter with multiple look-ahead outputsExpiredJan 18, 05Mar 06, 07[H03M]
2007/0047,712 SCALABLE, DISTRIBUTED ARCHITECTURE FOR FULLY CONNECTED NETWORK INTERCOM SYSTEMAbandonedOct 20, 06Mar 01, 07[H04M]
7170434 Look-ahead delta sigma modulator with quantization using natural and pattern loop filter responsesExpiredNov 22, 04Jan 30, 07[H03M]
7161229 Minimizing end boundary resistance in a programmable resistor of an integrated circuitExpiredMar 02, 05Jan 09, 07[H01L]
7162029 Gain or input volume controller and method utilizing a modified R2R ladder networkExpiredMay 29, 03Jan 09, 07[H04M]
7103014 Systems and methods for improving sound quality in computer-network telephony applicationExpiredOct 21, 05Sep 05, 06[H04B]
2006/0188,040 Data channel with sampling rate less than the channel bit rateAbandonedFeb 22, 05Aug 24, 06[H04L]
7084798 Look-ahead delta sigma modulators with quantizer input approximationsExpiredJan 18, 05Aug 01, 06[H03M]
7047148 Indirect techniques for measuring 1/f noiseExpiredOct 25, 00May 16, 06[H03F]
7032083 Glitch-free memory address decoding circuits and methods and memory subsystems using the sameExpiredAug 13, 02Apr 18, 06[G06F]

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