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SigmaTel美国核准专利列表（2005年8月22日止） |
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Publication |
Title |
Pub. Date |
Filed |
IPC Code |
|
US6906591 |
Amplifier having MOS capacitor compensation |
2005-06-14 |
2003-11-26 |
H03F 3/16 |
|
US6859156 |
Variable bandgap reference and applications thereof |
2005-02-22 |
2003-06-25 |
H03M 1/66 |
|
US6853171 |
Low loss multiple output stage for a DC-to-DC converter |
2005-02-08 |
2003-06-25 |
G05F 1/40 |
|
US6778119 |
Method and apparatus for accurate digital-to-analog conversion |
2004-08-17 |
2003-06-25 |
H03M 1/66 |
|
US6507223 |
Differential line driver having adjustable common mode operation |
2003-01-14 |
2001-02-22 |
H03K 5/22 |
|
US6373277 |
Line driver having variable impedance termination |
2002-04-16 |
2001-02-22 |
H03K 17/16 |
|
US6567027 |
Method and apparatus for analog to digital conversion utilizing a moving sum |
2003-05-20 |
2001-02-08 |
H03M 7/00 |
|
US6522275 |
Method and apparatus for sample rate conversion for use in an analog to digital converter |
2003-02-18 |
2001-02-08 |
H03M 3/00 |
|
US6633187 |
Method and apparatus for enabling a stand alone integrated circuit |
2003-10-14 |
2000-11-20 |
H03K 3/02 |
|
US6404172 |
Method and apparatus for providing integrated buck or boost conversion |
2002-06-11 |
2000-11-20 |
G05F 1/40 |
|
US6366522 |
Method and apparatus for controlling power consumption of an integrated circuit |
2002-04-02 |
2000-11-20 |
G06F 1/26 |
|
US6931139 |
Computer audio system |
2005-08-16 |
2000-10-17 |
H03G 5/00 |
|
US6329800 |
Method and apparatus for reducing power consumption in driver circuits |
2001-12-11 |
2000-10-17 |
G05F 1/40 |
|
US6362605 |
Method and apparatus for providing power to an integrated circuit |
2002-03-26 |
2000-08-24 |
G05F 1/56 |
|
US6584162 |
Method and apparatus sample rate conversions in an analog to digital converter |
2003-06-24 |
2000-07-31 |
H04L 7/00 |
|
US6753705 |
Edge sensitive detection circuit |
2004-06-22 |
2000-07-27 |
H03K 5/22 |
|
US6885900 |
Method and apparatus for providing multiple channel audio in a computing system |
2005-04-26 |
2000-07-10 |
G06F 17/00 |
|
US6522511 |
High speed electrostatic discharge protection circuit |
2003-02-18 |
2000-06-15 |
H02H 3/22 |
|
US6313770 |
System for sampling an analog signal and method thereof |
2001-11-06 |
2000-06-15 |
H03M 1/52 |
|
US6901127 |
Method and apparatus for data recovery |
2005-05-31 |
2000-04-26 |
H04L 7/02 |
|
US6535901 |
Method and apparatus for generating a fast multiply accumulator |
2003-03-18 |
2000-04-26 |
G06F 7/50 |
|
US6654900 |
Method and apparatus for producing multiple clock signals having controlled duty cycles by controlling clock multiplier delay elements |
2003-11-25 |
2000-04-19 |
G06F 1/06 |
|
US6362755 |
Method and apparatus for sample rate conversion and applicants thereof |
2002-03-26 |
2000-04-18 |
H03M 7/00 |
|
US6204651 |
Method and apparatus for regulating an output voltage of a switch mode converter |
2001-03-20 |
2000-04-18 |
G05F 1/40 |
|
US6857034 |
Computer peripheral device incorporating infrared transmissions |
2005-02-15 |
2000-04-14 |
G06F 13/42 |
|
US6211575 |
Method and apparatus for identifying customized integrated circuits |
2001-04-03 |
1999-08-18 |
H01L 21/44 |
|
US6137279 |
Adjustable power control module and applications thereof |
2000-10-24 |
1999-08-18 |
G05F 3/16 |
|
US6819677 |
Method and apparatus for recovering data that was transported utilizing multiple data transport protocols |
2004-11-16 |
1999-02-08 |
H04J 3/22 |
|
US6147634 |
Method and apparatus for digital to analog conversion with reduced noise |
2000-11-14 |
1998-12-15 |
H03M 3/00 |
|
US6526111 |
Method and apparatus for phase locked loop having reduced jitter and/or frequency biasing |
2003-02-25 |
1998-11-23 |
H03D 3/24 |
|
US6226663 |
Method and apparatus for overflow detection in a decimation filter |
2001-05-01 |
1998-11-23 |
G06F 7/38 |
|
US6175601 |
Infra-red data processing circuit |
2001-01-16 |
1998-11-23 |
H04L 27/08 |
|
US6128354 |
Data detection pre-amplifier circuit |
2000-10-03 |
1998-11-23 |
H04L 27/08 |
|
US6055283 |
Data detection circuit |
2000-04-25 |
1998-11-23 |
H04L 27/08 |
|
US6212230 |
Method and apparatus for pulse position modulation |
2001-04-03 |
1998-04-04 |
H03M 5/08 |
|
US6151149 |
Method and apparatus for pulse pattern modulation |
2000-11-21 |
1998-04-04 |
H04B 10/04 |
|
US5977822 |
Method and apparatus of pulse position demodulation |
1999-11-02 |
1998-04-04 |
H03K 9/04 |
|
US6608902 |
Stereo signal separation circuit and application thereof |
2003-08-19 |
1998-02-07 |
H04R 5/00 |
|
US6163580 |
Method and apparatus for data detection with an enhanced adaptive threshold |
2000-12-19 |
1997-06-09 |
H04L 25/10 |
|
US6144473 |
Method and apparatus for transceiving infrared signals |
2000-11-07 |
1997-06-09 |
H04B 10/00 |
|
US5933040 |
Method and apparatus for a data detection circuit operating from a low voltage power source |
1999-08-03 |
1997-06-09 |
H03L 5/00 |
|
US5892800 |
Data detection circuit having a pre-amplifier circuit |
1999-04-06 |
1997-03-20 |
H04L 27/08 |
|
US5815104 |
Method and apparatus for digital to analog conversion |
1998-09-29 |
1997-03-20 |
H03M 1/66 |
|
US5714909 |
Transimpedance amplifier and method for constructing same |
1998-02-03 |
1996-06-14 |
H03F 3/08 |
|
US5592165 |
Method and apparatus for an oversampled digital to analog convertor |
1997-01-07 |
1995-08-15 |
H03M 3/02 |
|
US5566101 |
Method and apparatus for a finite impulse response filter processor |
1996-10-15 |
1995-08-15 |
G06F 17/10 |
|
US5563553 |
Method and apparatus for a controlled oscillation that may be used in a phase locked loop |
1996-10-08 |
1995-08-15 |
H03B 5/24 |
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