Inventor
HENDERSON JOHN G N
23 patents
⚠️ This page may combine multiple inventors who share the name “HENDERSON JOHN G N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RCA CORP
14 patentsUS4402089AAug 30, 1983
Television tuning system with electronic frequency adjustment apparatus
RCA CORP62 citations93
US4422096ADec 20, 1983
Television frequency synthesizer for nonstandard frequency carriers
RCA CORP28 citations92
US4339827AJul 13, 1982
Automatic tuning circuit arrangement with switched impedances
RCA CORP47 citations89
US4349840ASep 14, 1982
Apparatus for automatically steering an electrically steerable television antenna
RCA CORP27 citations82
US4429415AJan 31, 1984
Signal-seeking tuning system with signal loss protection for a television receiver
RCA CORP24 citations81
US4342999AAug 3, 1982
Loop antenna arrangements for inclusion in a television receiver
RCA CORP28 citations81
US4317225AFeb 23, 1982
Channel identification apparatus useful in a sweep type tuning system
RCA CORP17 citations74
US4181916AJan 1, 1980
Liquid crystal channel number display responsive to ambient light level
RCA CORP8 citations74
US4536797AAug 20, 1985
Television receiver with auxiliary on-screen display
RCA CORP14 citations73
US4398303AAug 9, 1983
Signal-seeking tuning system with automatic bandswitching for a television receiver
RCA CORP12 citations73
US4390902AJun 28, 1983
Tuning display for a television receiver
RCA CORP16 citations73
US4387401AJun 7, 1983
Carrier detector apparatus useful in a multiband sweep type tuning system
RCA CORP15 citations73
US4291413ASep 22, 1981
Search type tuning system with direct address channel selection apparatus
RCA CORP9 citations73
US4254506AMar 3, 1981
Channel identification apparatus useful in a multiband sweep type tuning system
RCA CORP7 citations62
HITACHI AMERICA LTD
6 patentsUS5377051ADec 27, 1994
Digital video recorder compatible receiver with trick play image enhancement
HITACHI AMERICA LTD789 citations99
US5623344AApr 22, 1997
Digital video recording device with trick play capability
HITACHI AMERICA LTD50 citations96
US5576902ANov 19, 1996
Method and apparatus directed to processing trick play video data to compensate for intentionally omitted data
HITACHI AMERICA LTD100 citations96
US5583650ADec 10, 1996
Digital recording and playback device error correction methods and apparatus for use with trick play data
HITACHI AMERICA LTD35 citations92
US7633441B2Dec 15, 2009
Steerable antenna and receiver interface for terrestrial broadcast
HITACHI AMERICA LTD1 citations63
US7425920B2Sep 16, 2008
Steerable antenna and receiver interface for terrestrial broadcast
HITACHI AMERICA LTD0 citations52