Assignee
SIGMATEL INC
US·202 granted patents·11 pending applications·3,041 citations·filing 1995–2013
Top patents by PatentIndex Score
213 records- 0198US7206367B1Apparatus and method to synchronize multimedia playback over a network using out-of-band signalingSIGMATEL INC·Filed 2001·Granted Apr 17, 2007·311 cites·51 claims
- 0293US7409623B2System and method of reading non-volatile computer memorySIGMATEL INC·Filed 2004·Granted Aug 5, 2008·125 cites·25 claims
- 0392US7164565B2ESD protection circuitSIGMATEL INC·Filed 2003·Granted Jan 16, 2007·88 cites·14 claims
- 0492US7043479B2Remote-directed management of media contentSIGMATEL INC·Filed 2001·Granted May 9, 2006·46 cites·8 claims
- 0592US6998871B2Configurable integrated circuit for use in a multi-function handheld deviceSIGMATEL INC·Filed 2003·Granted Feb 14, 2006·27 cites·21 claims
- 0690US7856283B2Digital microphone interface, audio codec and methods for use therewithSIGMATEL INC·Filed 2006·Granted Dec 21, 2010·33 cites·26 claims
- 0790US7394314B2Class-D amplifier with noise-immunity feedbackSIGMATEL INC·Filed 2006·Granted Jul 1, 2008·17 cites·9 claims
- 0889US7228054B2Automated playlist generationSIGMATEL INC·Filed 2002·Granted Jun 5, 2007·51 cites·29 claims
- 0989US6362755B1Method and apparatus for sample rate conversion and applicants thereofSIGMATEL INC·Filed 2000·Granted Mar 26, 2002·40 cites·26 claims
- 1088US7065417B2MPEG portable sound reproducing system and a reproducing method thereofSIGMATEL INC·Filed 2002·Granted Jun 20, 2006·18 cites·30 claims
- 1187US7208919B2Method and apparatus for digitally regulating an output voltage using noise-shaped component selectionSIGMATEL INC·Filed 2005·Granted Apr 24, 2007·23 cites·18 claims
- 1287US7143102B2Autogenerated play lists from search criteriaSIGMATEL INC·Filed 2001·Granted Nov 28, 2006·62 cites·20 claims
- 1387US5563553AMethod and apparatus for a controlled oscillation that may be used in a phase locked loopSIGMATEL INC·Filed 1995·Granted Oct 8, 1996·97 cites·14 claims
- 1486US7821501B2Touch screen driver and methods for use therewithSIGMATEL INC·Filed 2005·Granted Oct 26, 2010·16 cites·33 claims
- 1586US7594087B2System and method for writing data to and erasing data from non-volatile memorySIGMATEL INC·Filed 2006·Granted Sep 22, 2009·23 cites·29 claims
- 1686US7512720B2System and method for accessing universal serial bus networksSIGMATEL INC·Filed 2005·Granted Mar 31, 2009·18 cites·15 claims
- 1786US7391347B2Radio receiver, system on a chip integrated circuit and methods for use therewithSIGMATEL INC·Filed 2005·Granted Jun 24, 2008·15 cites·34 claims
- 1886US7227478B1Sample rate converter with selectable sampling rate and timing referenceSIGMATEL INC·Filed 2005·Granted Jun 5, 2007·15 cites·21 claims
- 1986US7209069B2Successive approximation analog-to-digital converter with current steered digital-to-analog converterSIGMATEL INC·Filed 2005·Granted Apr 24, 2007·17 cites·14 claims
- 2085US7620380B2Adjustable automatic gain controlSIGMATEL INC·Filed 2006·Granted Nov 17, 2009·12 cites·22 claims
- 2185US7394987B2Programmable infrared data processorSIGMATEL INC·Filed 2005·Granted Jul 1, 2008·14 cites·17 claims
- 2284US7844307B2Wireless handset having selective communication control and corresponding methodsSIGMATEL INC·Filed 2006·Granted Nov 30, 2010·11 cites·47 claims
- 2384US7109745B2Configurable integrated circuit for use in a multi-function handheld deviceSIGMATEL INC·Filed 2005·Granted Sep 19, 2006·11 cites·4 claims
- 2484US7106241B1Controlled sampling module and method for use therewithSIGMATEL INC·Filed 2005·Granted Sep 12, 2006·13 cites·20 claims
- 2584US6507223B2Differential line driver having adjustable common mode operationSIGMATEL INC·Filed 2001·Granted Jan 14, 2003·28 cites·14 claims
- 2684US6212230B1Method and apparatus for pulse position modulationSIGMATEL INC·Filed 1998·Granted Apr 3, 2001·80 cites·18 claims
- 2784US5714909ATransimpedance amplifier and method for constructing sameSIGMATEL INC·Filed 1996·Granted Feb 3, 1998·54 cites·18 claims
- 2884US5566101AMethod and apparatus for a finite impulse response filter processorSIGMATEL INC·Filed 1995·Granted Oct 15, 1996·50 cites·16 claims
- 2983US9231562B2Decimation filterSIGMATEL INC·Filed 2013·Granted Jan 5, 2016·5 cites·16 claims
- 3083US8055982B2Error correction system and methodSIGMATEL INC·Filed 2008·Granted Nov 8, 2011·12 cites·24 claims
- 3183US7911839B2System and method to control one time programmable memorySIGMATEL INC·Filed 2010·Granted Mar 22, 2011·7 cites·20 claims
- 3283US7395401B2System and methods for accessing solid-state memory devicesSIGMATEL INC·Filed 2005·Granted Jul 1, 2008·14 cites·27 claims
- 3383US7262585B2Method and apparatus for bi-directional current limit in a dual-power source capable deviceSIGMATEL INC·Filed 2005·Granted Aug 28, 2007·19 cites·18 claims
- 3483US7230557B1Audio codec adapted to dual bit-streams and methods for use therewithSIGMATEL INC·Filed 2006·Granted Jun 12, 2007·17 cites·20 claims
- 3583US6654900B1Method and apparatus for producing multiple clock signals having controlled duty cycles by controlling clock multiplier delay elementsSIGMATEL INC·Filed 2000·Granted Nov 25, 2003·28 cites·14 claims
- 3683US6584162B1Method and apparatus sample rate conversions in an analog to digital converterSIGMATEL INC·Filed 2000·Granted Jun 24, 2003·43 cites·24 claims
- 3782US7428603B2System and method for communicating with memory devices via plurality of state machines and a DMA controllerSIGMATEL INC·Filed 2005·Granted Sep 23, 2008·12 cites·19 claims
- 3882US7254244B2Pop and click reduction using DAC power up and power down processingSIGMATEL INC·Filed 2003·Granted Aug 7, 2007·22 cites·16 claims
- 3982US6885900B1Method and apparatus for providing multiple channel audio in a computing systemSIGMATEL INC·Filed 2000·Granted Apr 26, 2005·36 cites·24 claims
- 4082US5977822AMethod and apparatus of pulse position demodulationSIGMATEL INC·Filed 1998·Granted Nov 2, 1999·42 cites·20 claims
- 4181US7599451B2Sample rate conversion module and applications thereofSIGMATEL INC·Filed 2005·Granted Oct 6, 2009·10 cites·18 claims
- 4281US7362810B2Post-filter for deblocking and deringing of video dataSIGMATEL INC·Filed 2003·Granted Apr 22, 2008·19 cites·49 claims
- 4380US7233875B2Test set for testing a device and methods for use therewithSIGMATEL INC·Filed 2005·Granted Jun 19, 2007·13 cites·31 claims
- 4480US7075280B2Pulse-skipping PFM DC-DC converter using a voltage mode control loopSIGMATEL INC·Filed 2003·Granted Jul 11, 2006·36 cites·13 claims
- 4580US6977447B2Method and apparatus for regulating multiple outputs of a single inductor DC to DC converterSIGMATEL INC·Filed 2002·Granted Dec 20, 2005·31 cites·20 claims
- 4680US6526111B1Method and apparatus for phase locked loop having reduced jitter and/or frequency biasingSIGMATEL INC·Filed 1998·Granted Feb 25, 2003·50 cites·13 claims
- 4780US6204651B1Method and apparatus for regulating an output voltage of a switch mode converterSIGMATEL INC·Filed 2000·Granted Mar 20, 2001·74 cites·35 claims
- 4879US7792220B2Demodulator system and methodSIGMATEL INC·Filed 2006·Granted Sep 7, 2010·10 cites·29 claims
- 4979US7676206B2Low noise, low distortion radio receiver front-endSIGMATEL INC·Filed 2005·Granted Mar 9, 2010·11 cites·22 claims
- 5079US7146322B2Interleaving of information into compressed digital audio streamsSIGMATEL INC·Filed 2002·Granted Dec 5, 2006·32 cites·21 claims
Showing the top 50 of 213 patent records by PatentIndex Score.
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