Inventor
SRIVASTAVA GOPAL K
44 patents
⚠️ This page may combine multiple inventors who share the name “SRIVASTAVA GOPAL K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZENITH ELECTRONICS CORP
28 patentsUS5126639AJun 30, 1992
Sequential scan system changes for multiple frequency range oscillator and control
ZENITH ELECTRONICS CORP71 citations96
US5847750ADec 8, 1998
Method of accessing a repetitively transmitted video program
ZENITH ELECTRONICS CORP24 citations92
US5291295AMar 1, 1994
System 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 portions
ZENITH ELECTRONICS CORP45 citations92
US5184091AFeb 2, 1993
Circuit for phase locking an oscillator within any one of a plurality of frequency ranges
ZENITH ELECTRONICS CORP33 citations92
US5124671AJun 23, 1992
Lock detector and confidence system for multiple frequency range oscillator control
ZENITH ELECTRONICS CORP26 citations92
US5121086AJun 9, 1992
PLL including static phase error responsive oscillator control
ZENITH ELECTRONICS CORP24 citations92
US4525682AJun 25, 1985
Biased current mirror having minimum switching delay
ZENITH ELECTRONICS CORP33 citations90
US4754321AJun 28, 1988
Integratable color correction circuit
ZENITH ELECTRONICS CORP20 citations82
US4591910AMay 27, 1986
Horizontal picture centering
ZENITH ELECTRONICS CORP21 citations80
US5223920AJun 29, 1993
Video processor having automatic chrominance control compensation
ZENITH ELECTRONICS CORP10 citations74
US5200712AApr 6, 1993
Variable speed phase locked loop
ZENITH ELECTRONICS CORP13 citations74
US5187567AFeb 16, 1993
Automatic video peaking system
ZENITH ELECTRONICS CORP9 citations74
US5247229ASep 21, 1993
Adaptive scan control having horizontal scan locked clock system
ZENITH ELECTRONICS CORP9 citations72
US5168246ADec 1, 1992
Error amplifier for multiple frequency oscillator control
ZENITH ELECTRONICS CORP11 citations71
US4621289ANov 4, 1986
Digital sync separator and differentiator
ZENITH ELECTRONICS CORP7 citations71
US4812907AMar 14, 1989
Sync pulse separator system
ZENITH ELECTRONICS CORP8 citations66
US4729023AMar 1, 1988
Mode recognition for vertical countdown
ZENITH ELECTRONICS CORP8 citations66
US5359368AOct 25, 1994
Demodulating a line locked digital color television signal
ZENITH ELECTRONICS CORP3 citations63
US5299000AMar 29, 1994
Video white signal compression and peaking
ZENITH ELECTRONICS CORP3 citations63
US5187568AFeb 16, 1993
Video processor having improved clamping system for color television receivers
ZENITH ELECTRONICS CORP3 citations63
US4764810AAug 16, 1988
Horizontal phase locked loop system
ZENITH ELECTRONICS CORP2 citations63
US4611229ASep 9, 1986
Auto range horizontal automatic phase control
ZENITH ELECTRONICS CORP6 citations63
US4567447AJan 28, 1986
Auto tuning for an oscillator
ZENITH ELECTRONICS CORP6 citations63
US4507682AMar 26, 1985
Self-gated AGC detector
ZENITH ELECTRONICS CORP2 citations63
US4607283AAug 19, 1986
Vertical picture centering circuit
ZENITH ELECTRONICS CORP3 citations57
US5194940AMar 16, 1993
Frequency multiplexed digital video processor
ZENITH ELECTRONICS CORP1 citations52
US4651062AMar 17, 1987
Beam current compensation for vertical size in a digital TV
ZENITH ELECTRONICS CORP0 citations50
US5212543AMay 18, 1993
Video processor having reduced capacity luminance delay circuit
ZENITH ELECTRONICS CORP0 citations42
ZENITH RADIO CORP
14 patentsUS4321488AMar 23, 1982
Sample and hold detector
ZENITH RADIO CORP24 citations82
US4298890ANov 3, 1981
Digital vertical synchronization system for a television receiver
ZENITH RADIO CORP24 citations81
US4335403AJun 15, 1982
Horizontal countdown system for television receivers
ZENITH RADIO CORP15 citations74
US4334243AJun 8, 1982
Pulse width limiter
ZENITH RADIO CORP12 citations74
US4285005AAug 18, 1981
Color correction circuit for a color television receiver
ZENITH RADIO CORP12 citations74
US4344084AAug 10, 1982
VIR Correction system
ZENITH RADIO CORP8 citations73
US4296432AOct 20, 1981
Dynamic enabling network for a color correction circuit
ZENITH RADIO CORP9 citations73
US4446482AMay 1, 1984
System for generating 2H pulses in a television receiver
ZENITH RADIO CORP7 citations71
US4318036AMar 2, 1982
Pulse width modulator for a television receiver
ZENITH RADIO CORP11 citations71
US4399549AAug 16, 1983
Odd number frequency division with symmetrical output
ZENITH RADIO CORP5 citations63
US4360825ANov 23, 1982
Vertical drive generator and horizontal rate gate generator for a television receiver
ZENITH RADIO CORP5 citations63
US4359755ANov 16, 1982
Gating network for a sampling circuit
ZENITH RADIO CORP3 citations63
US4344083AAug 10, 1982
VIR Gain and phase correction network
ZENITH RADIO CORP3 citations63
US4237478ADec 2, 1980
I.C. chroma injection and demodulation system
ZENITH RADIO CORP1 citations51