Inventor
YAMAGIWA KAZUO
15 patents
Patents
15 patentsUS4533949AAug 6, 1985
Subscription television system
SONY CORP134 citations96
US4609947ASep 2, 1986
Video signal recording apparatus
SONY CORP35 citations92
US4558283ADec 10, 1985
Circuit for generating a sum or differential frequency signal
SONY CORP8 citations73
US4326223AApr 20, 1982
Video signal recording and/or reproducing apparatus with gain control
SONY CORP7 citations73
US4233621ANov 11, 1980
Method and apparatus for recording and reproducing a color-aligned line-sequential color video signal
SONY CORP12 citations73
US4220964ASep 2, 1980
Secam recording and reproducing system
SONY CORP16 citations73
US4198650AApr 15, 1980
Capacitive-type nonlinear emphasis circuit
SONY CORP18 citations73
US4177481ADec 4, 1979
Magnetic recording and/or reproducing apparatus with chrominance crosstalk elimination
SONY CORP14 citations73
US4077047AFeb 28, 1978
Color killer enhancement in a video signal recording/playback system
SONY CORP7 citations73
US4006423AFeb 1, 1977
Phase detector
SONY CORP9 citations73
US4193084AMar 11, 1980
Video recorder having means for maintaining constant the amplitude of the frequency-modulated signal
SONY CORP11 citations72
US3947871AMar 30, 1976
Color video signal reproducing apparatus
SONY CORP10 citations72
US4769781ASep 6, 1988
IC device compatible with input signals in the formats for two-line and four-line type bus lines
SONY CORP4 citations62
US4223338ASep 16, 1980
Color television receiver and VTR system
SONY CORP3 citations62
US4268874AMay 19, 1981
Transducer deflection apparatus for use in a video signal reproducing device
SONY CORP4 citations56