Inventor
KRISHNAMURTHY GOPALAN
US21 patents
⚠️ This page may combine multiple inventors who share the name “KRISHNAMURTHY GOPALAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZENITH ELECTRONICS CORP
17 patentsUS5410368AApr 25, 1995
Carrier acquisition by applying substitute pilot to a synchronous demodulator during a start up interval
ZENITH ELECTRONICS CORP45 citations96
US5018197AMay 21, 1991
Secure video decoder system
ZENITH ELECTRONICS CORP114 citations96
US5406587AApr 11, 1995
Error tracking loop
ZENITH ELECTRONICS CORP41 citations95
US4768229AAug 30, 1988
Restrictive access control system
ZENITH ELECTRONICS CORP278 citations95
US5638140AJun 10, 1997
FPLL having AFC filter with limited phase shift
ZENITH ELECTRONICS CORP22 citations92
US5533071AJul 2, 1996
Error tracking loop incorporating simplified cosine look-up table
ZENITH ELECTRONICS CORP28 citations92
US5508748AApr 16, 1996
Data level selection for multilevel VSB transmission system
ZENITH ELECTRONICS CORP29 citations92
US6084642AJul 4, 2000
Receiver for adjusting sync levels in VSB systems
ZENITH ELECTRONICS CORP9 citations74
US5642154AJun 24, 1997
Cable maintenance system
ZENITH ELECTRONICS CORP9 citations74
US5621483AApr 15, 1997
Polarity selection circuit for bi-phase stable FPLL
ZENITH ELECTRONICS CORP8 citations74
US5533070AJul 2, 1996
Simplified complex multiplier in error tracking loop
ZENITH ELECTRONICS CORP13 citations74
US5841820ANov 24, 1998
Data comparison AGC system for VSB receiver
ZENITH ELECTRONICS CORP10 citations73
US5764309AJun 9, 1998
Sync compensated AGC system for VSB receiver
ZENITH ELECTRONICS CORP14 citations73
US5627604AMay 6, 1997
Stabilizing the lock up of a bi-phase stable FPLL by augmenting a recovered DC pilot
ZENITH ELECTRONICS CORP11 citations73
US5546138AAug 13, 1996
AGC system with overriding, maximum gain during an initial interval to enhance signal acquisition
ZENITH ELECTRONICS CORP12 citations73
US5828404AOct 27, 1998
VSB mode detection system with comb filter
ZENITH ELECTRONICS CORP4 citations62
US4649420AMar 10, 1987
Automatic frequency response correction using color burst
ZENITH ELECTRONICS CORP5 citations60
TRIDENT MICROSYSTEMS FAR EAST
3 patentsUS7653126B2Jan 26, 2010
Apparatus for and method of controlling the operation of an equalizer
TRIDENT MICROSYSTEMS FAR EAST13 citations92
US7599433B2Oct 6, 2009
Apparatus for and method of controlling a feedforward filter of an equalizer
TRIDENT MICROSYSTEMS FAR EAST12 citations91
US7995648B2Aug 9, 2011
Advanced digital receiver
TRIDENT MICROSYSTEMS FAR EAST11 citations83