Inventor
MERRELL RICHARD G
US18 patents
⚠️ This page may combine multiple inventors who share the name “MERRELL RICHARD G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZENITH RADIO CORP
9 patentsUS4160993AJul 10, 1979
VIR line recognition system
ZENITH RADIO CORP7 citations73
US4090143AMay 16, 1978
Digital phase comparator with reset
ZENITH RADIO CORP7 citations73
US3943449AMar 9, 1976
Multi-speed ramp for a varactor tuning system
ZENITH RADIO CORP10 citations73
US4156197AMay 22, 1979
High speed phase locked loop tuning system
ZENITH RADIO CORP3 citations62
US4151559AApr 24, 1979
Electronic television tuner interface circuit
ZENITH RADIO CORP2 citations62
US4070629AJan 24, 1978
High speed tuning system
ZENITH RADIO CORP6 citations62
US4002985AJan 11, 1977
Channel selection indicator for memory tuning system
ZENITH RADIO CORP3 citations62
US4021741AMay 3, 1977
Remote control with reduced responsiveness to interrupted actuating signals
ZENITH RADIO CORP4 citations59
US4156199AMay 22, 1979
Apparatus for shifting a tuning window
ZENITH RADIO CORP1 citations51
ZENITH ELECTRONICS CORP
5 patentsUS4476488AOct 9, 1984
Control circuit for CATV alert system
ZENITH ELECTRONICS CORP101 citations96
US5231665AJul 27, 1993
Cable television system having dynamic market code shuffling
ZENITH ELECTRONICS CORP109 citations91
US4514761AApr 30, 1985
Data encryption technique for subscription television system
ZENITH ELECTRONICS CORP112 citations91
US4503462AMar 5, 1985
Automatic homing system for a subscription television signal decoder
ZENITH ELECTRONICS CORP18 citations71
US4521897AJun 4, 1985
Apparatus for synchronizing the operation of master and slave counters
ZENITH ELECTRONICS CORP3 citations62