Inventor · disambiguated record
Gopal K. Srivastava
Also filed as: SRIVASTAVA GOPAL · SRIVASTAVA GOPAL K · SRIVASTAVA GOPAL KRISHNA
49 granted patents·1 pending application·588 citations·filing 1974–2001
98Inventor score
Top patents by PatentIndex Score
50 records- 0190US5126639ASequential scan system changes for multiple frequency range oscillator and controlZENITH ELECTRONICS CORP·Filed 1991·Granted Jun 30, 1992·71 cites·13 claims
- 0283US4321488ASample and hold detectorZENITH RADIO CORP·Filed 1979·Granted Mar 23, 1982·24 cites·7 claims
- 0381US4525682ABiased current mirror having minimum switching delayZENITH ELECTRONICS CORP·Filed 1984·Granted Jun 25, 1985·33 cites·6 claims
- 0479US5291295ASystem for equalizing phosphor aging in CRT, subject to different aspect ratio displays by operating unused display portions at brightness levels determined by the brightness levels of corresponding adjacent similar sized display portionsZENITH ELECTRONICS CORP·Filed 1992·Granted Mar 1, 1994·45 cites·3 claims
- 0575US4298890ADigital vertical synchronization system for a television receiverZENITH RADIO CORP·Filed 1980·Granted Nov 3, 1981·24 cites·18 claims
- 0673US4591910AHorizontal picture centeringZENITH ELECTRONICS CORP·Filed 1984·Granted May 27, 1986·21 cites·32 claims
- 0771US5184091ACircuit for phase locking an oscillator within any one of a plurality of frequency rangesZENITH ELECTRONICS CORP·Filed 1991·Granted Feb 2, 1993·33 cites·28 claims
- 0866US5847750AMethod of accessing a repetitively transmitted video programZENITH ELECTRONICS CORP·Filed 1993·Granted Dec 8, 1998·24 cites·8 claims
- 0966US5124671ALock detector and confidence system for multiple frequency range oscillator controlZENITH ELECTRONICS CORP·Filed 1991·Granted Jun 23, 1992·26 cites·16 claims
- 1066US4754321AIntegratable color correction circuitZENITH ELECTRONICS CORP·Filed 1986·Granted Jun 28, 1988·20 cites·1 claims
- 1165US4091419ACombination contrast/brightness control for a television receiverRHEE DENNIS W·Filed 1976·Granted May 23, 1978·16 cites·11 claims
- 1263US5121086APLL including static phase error responsive oscillator controlZENITH ELECTRONICS CORP·Filed 1991·Granted Jun 9, 1992·24 cites·14 claims
- 1363US4335403AHorizontal countdown system for television receiversZENITH RADIO CORP·Filed 1981·Granted Jun 15, 1982·15 cites·14 claims
- 1458US4334243APulse width limiterZENITH RADIO CORP·Filed 1981·Granted Jun 8, 1982·12 cites·5 claims
- 1558US4285005AColor correction circuit for a color television receiverZENITH RADIO CORP·Filed 1980·Granted Aug 18, 1981·12 cites·5 claims
- 1656US4084178AAutomatic hue control circuitADMIRAL CORP·Filed 1976·Granted Apr 11, 1978·10 cites·10 claims
- 1755US3962723AAutomatic peak color control circuitGTE SYLVANIA INC·Filed 1974·Granted Jun 8, 1976·7 cites·26 claims
- 1854US4318036APulse width modulator for a television receiverZENITH RADIO CORP·Filed 1980·Granted Mar 2, 1982·11 cites·13 claims
- 1950US4296432ADynamic enabling network for a color correction circuitZENITH RADIO CORP·Filed 1980·Granted Oct 20, 1981·9 cites·12 claims
- 2049US5200712AVariable speed phase locked loopZENITH ELECTRONICS CORP·Filed 1991·Granted Apr 6, 1993·13 cites·9 claims
- 2147US4344084AVIR Correction systemZENITH RADIO CORP·Filed 1981·Granted Aug 10, 1982·8 cites·13 claims
- 2246US5223920AVideo processor having automatic chrominance control compensationZENITH ELECTRONICS CORP·Filed 1991·Granted Jun 29, 1993·10 cites·11 claims
- 2346US5168246AError amplifier for multiple frequency oscillator controlZENITH ELECTRONICS CORP·Filed 1991·Granted Dec 1, 1992·11 cites·8 claims
- 2445US5187567AAutomatic video peaking systemZENITH ELECTRONICS CORP·Filed 1991·Granted Feb 16, 1993·9 cites·14 claims
- 2545US4446482ASystem for generating 2H pulses in a television receiverZENITH RADIO CORP·Filed 1982·Granted May 1, 1984·7 cites·12 claims
- 2644US4621289ADigital sync separator and differentiatorZENITH ELECTRONICS CORP·Filed 1984·Granted Nov 4, 1986·7 cites·32 claims
- 2744US4611229AAuto range horizontal automatic phase controlZENITH ELECTRONICS CORP·Filed 1983·Granted Sep 9, 1986·6 cites·17 claims
- 2844US3949418ABurst gate and backporch clamping circuitryGTE SYLVANIA INC·Filed 1975·Granted Apr 6, 1976·6 cites·14 claims
- 2943US4567447AAuto tuning for an oscillatorZENITH ELECTRONICS CORP·Filed 1983·Granted Jan 28, 1986·6 cites·27 claims
- 3043US4399549AOdd number frequency division with symmetrical outputZENITH RADIO CORP·Filed 1981·Granted Aug 16, 1983·5 cites·5 claims
- 3143US2002194596A1Control of multiple AV-devices by a single master controller using infrared transmitted commands and bus transmitted commandsFiled 2001·Application pending·0 cites
- 3242US4729023AMode recognition for vertical countdownZENITH ELECTRONICS CORP·Filed 1986·Granted Mar 1, 1988·8 cites·16 claims
- 3342US4219840AColor correctorZENITH RADIO CORP·Filed 1978·Granted Aug 26, 1980·5 cites·21 claims
- 3439US5247229AAdaptive scan control having horizontal scan locked clock systemZENITH ELECTRONICS CORP·Filed 1992·Granted Sep 21, 1993·9 cites·5 claims
- 3539US4812907ASync pulse separator systemZENITH ELECTRONICS CORP·Filed 1987·Granted Mar 14, 1989·8 cites·11 claims
- 3639US4360825AVertical drive generator and horizontal rate gate generator for a television receiverZENITH RADIO CORP·Filed 1980·Granted Nov 23, 1982·5 cites·10 claims
- 3739US4021848AAdjustable aperture correction systemGTE SYLVANIA INC·Filed 1975·Granted May 3, 1977·4 cites·7 claims
- 3835US4359755AGating network for a sampling circuitZENITH RADIO CORP·Filed 1981·Granted Nov 16, 1982·3 cites·9 claims
- 3934US5359368ADemodulating a line locked digital color television signalZENITH ELECTRONICS CORP·Filed 1993·Granted Oct 25, 1994·3 cites·16 claims
- 4034US5299000AVideo white signal compression and peakingZENITH ELECTRONICS CORP·Filed 1992·Granted Mar 29, 1994·3 cites·5 claims
- 4134US5187568AVideo processor having improved clamping system for color television receiversZENITH ELECTRONICS CORP·Filed 1991·Granted Feb 16, 1993·3 cites·11 claims
- 4234US4344083AVIR Gain and phase correction networkZENITH RADIO CORP·Filed 1980·Granted Aug 10, 1982·3 cites·6 claims
- 4332US4764810AHorizontal phase locked loop systemZENITH ELECTRONICS CORP·Filed 1987·Granted Aug 16, 1988·2 cites·2 claims
- 4432US4607283AVertical picture centering circuitZENITH ELECTRONICS CORP·Filed 1984·Granted Aug 19, 1986·3 cites·7 claims
- 4532US4507682ASelf-gated AGC detectorZENITH ELECTRONICS CORP·Filed 1982·Granted Mar 26, 1985·2 cites·7 claims
- 4631US5194940AFrequency multiplexed digital video processorZENITH ELECTRONICS CORP·Filed 1991·Granted Mar 16, 1993·1 cites·19 claims
- 4730US5212543AVideo processor having reduced capacity luminance delay circuitZENITH ELECTRONICS CORP·Filed 1991·Granted May 18, 1993·0 cites·17 claims
- 4830US4237478AI.C. chroma injection and demodulation systemZENITH RADIO CORP·Filed 1979·Granted Dec 2, 1980·1 cites·13 claims
- 4930US4207588AColor killerZENITH RADIO CORP·Filed 1979·Granted Jun 10, 1980·0 cites·7 claims
- 5029US4651062ABeam current compensation for vertical size in a digital TVZENITH ELECTRONICS CORP·Filed 1985·Granted Mar 17, 1987·0 cites·4 claims
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