Assignee
CRYSTAL SEMICONDUCTOR
US·25 granted patents·1,476 citations·filing 1988–1996
Top patents by PatentIndex Score
25 records- 0197US4943807ADigitally calibrated delta-sigma analog-to-digital converterCRYSTAL SEMICONDUCTOR·Filed 1988·Granted Jul 24, 1990·180 cites·34 claims
- 0297US4939516AChopper stabilized delta-sigma analog-to-digital converterCRYSTAL SEMICONDUCTOR·Filed 1988·Granted Jul 3, 1990·119 cites·19 claims
- 0394US5696708ADigital filter with decimated frequency responseCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Dec 9, 1997·94 cites·38 claims
- 0493US4941156ALinear jitter attenuatorCRYSTAL SEMICONDUCTOR·Filed 1989·Granted Jul 10, 1990·81 cites·21 claims
- 0591US5212659ALow precision finite impulse response filter for digital interpolationCRYSTAL SEMICONDUCTOR·Filed 1991·Granted May 18, 1993·96 cites·27 claims
- 0691US5208597ACompensated capacitors for switched capacitor input of an analog-to-digital converterCRYSTAL SEMICONDUCTOR·Filed 1989·Granted May 4, 1993·75 cites·11 claims
- 0789US5220483ATri-level capacitor structure in switched-capacitor filterCRYSTAL SEMICONDUCTOR·Filed 1992·Granted Jun 15, 1993·79 cites·20 claims
- 0887US5245344AHigh order switched-capacitor filter with dac inputCRYSTAL SEMICONDUCTOR·Filed 1991·Granted Sep 14, 1993·46 cites·18 claims
- 0986US5668794AVariable gain echo suppressorCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Sep 16, 1997·94 cites·20 claims
- 1085US5631900ADouble-Talk detector for echo cancellerCRYSTAL SEMICONDUCTOR·Filed 1995·Granted May 20, 1997·104 cites·26 claims
- 1183US5744739AWavetable synthesizer and operating method using a variable sampling rate approximationCRYSTAL SEMICONDUCTOR·Filed 1996·Granted Apr 28, 1998·62 cites·25 claims
- 1283US5726676ASignal driver circuit for liquid crystal displaysCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Mar 10, 1998·54 cites·21 claims
- 1382US5703617ASignal driver circuit for liquid crystal displaysCRYSTAL SEMICONDUCTOR·Filed 1994·Granted Dec 30, 1997·46 cites·21 claims
- 1482US5541864AArithmetic-free digital interpolation filter architectureCRYSTAL SEMICONDUCTOR·Filed 1994·Granted Jul 30, 1996·96 cites·57 claims
- 1577US5719591ASignal driver circuit for liquid crystal displaysCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Feb 17, 1998·39 cites·27 claims
- 1674US5247210AMethod and circuitry for decreasing the recovery time of an MOS differential voltage comparatorCRYSTAL SEMICONDUCTOR·Filed 1991·Granted Sep 21, 1993·27 cites·13 claims
- 1771US5111451AMethod and apparatus for synchronizing an optical transceiver over a full duplex data communication channelCRYSTAL SEMICONDUCTOR·Filed 1989·Granted May 5, 1992·37 cites·3 claims
- 1870US5196850AFourth order digital delta-sigma modulatorCRYSTAL SEMICONDUCTOR·Filed 1991·Granted Mar 23, 1993·29 cites·28 claims
- 1969US5198782ALow distortion amplifier output stage for dacCRYSTAL SEMICONDUCTOR·Filed 1991·Granted Mar 30, 1993·21 cites·7 claims
- 2066US5088107ALinear channel bandwidth calibration circuitCRYSTAL SEMICONDUCTOR·Filed 1989·Granted Feb 11, 1992·28 cites·16 claims
- 2160US5751179AOutput driver for PCI busCRYSTAL SEMICONDUCTOR·Filed 1996·Granted May 12, 1998·22 cites·15 claims
- 2257US5621339AMethod and apparatus for removing trapped oxide charge from a differential input stageCRYSTAL SEMICONDUCTOR·Filed 1993·Granted Apr 15, 1997·13 cites·23 claims
- 2353US5825244ALow power class AB integrated circuit amplifier having improved linearity when driving high impedance loadsCRYSTAL SEMICONDUCTOR·Filed 1996·Granted Oct 20, 1998·14 cites·21 claims
- 2453US5497122ALow power class-AB integrated circuit amplifierCRYSTAL SEMICONDUCTOR·Filed 1995·Granted Mar 5, 1996·14 cites·20 claims
- 2541US5767722ADelta sigma switch capacitor filter using curent feed forwardCRYSTAL SEMICONDUCTOR·Filed 1996·Granted Jun 16, 1998·6 cites·48 claims
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