Inventor
FUKUDA TOKUYA
JP20 patents
Patents
20 patentsUS5390191AFeb 14, 1995
Apparatus and method for testing the interconnection between integrated circuits
SONY CORP27 citations92
US5291276AMar 1, 1994
Apparatus for processing a video signal to generate video signal adjustment data that is self-contained with the video equipment
SONY CORP21 citations92
US5471481ANov 28, 1995
Testing method for electronic apparatus
SONY CORP54 citations91
US5049983ASep 17, 1991
Digital camera apparatus having an analog emphasis circuitry
SONY CORP35 citations91
US5557328ASep 17, 1996
Video camera having an improved zoom system
SONY CORP50 citations89
US5142375AAug 25, 1992
Video camera integral with magnetic recording and reproducing device, and with color video signal processing apparatus
SONY CORP16 citations74
US5070408ADec 3, 1991
Focusing apparatus and digital filters for use therewith
SONY CORP8 citations74
US4709275ANov 24, 1987
Apparatus for magnetically recording and/or reproducing two-channel audio signals together with a color video signal in successive oblique tracks on a magnetic tape
SONY CORP9 citations73
US4926261AMay 15, 1990
Video noise reduction circuit
SONY CORP19 citations72
US5784118AJul 21, 1998
Video signal phase synchronizing method, circuit and synthesizing apparatus
SONY CORP9 citations71
US5087967AFeb 11, 1992
Color image pickup device having a level correcting circuit for correcting level variations in color image signals
SONY CORP3 citations63
US4750033AJun 7, 1988
Comb filter, chrominance and luminance signal separating circuit for modifying the level-frequency characteristic of the luminance signal
SONY CORP3 citations63
US4851930AJul 25, 1989
Magnetic recording and reproducing apparatus compensating for the deviation of H alignment during a variable speed reproduction
SONY CORP6 citations62
US4807049AFeb 21, 1989
C-type comb filter with negative feedback
SONY CORP4 citations62
US4731674AMar 15, 1988
Color video signal processing apparatus for crosstalk elimination
SONY CORP6 citations62
US4689580AAug 25, 1987
Active filter circuit
SONY CORP4 citations62
US4891689AJan 2, 1990
Color signal matrix circuits
SONY CORP6 citations61
US4725900AFeb 16, 1988
Apparatus employing adjustable modulation index for reducing cross talk between recorded audio and video signals
SONY CORP1 citations49
US5185707AFeb 9, 1993
Focusing apparatus and digital filters for use therewith
SONY CORP0 citations42
US5291277AMar 1, 1994
Digital image signal processing circuits
SONY CORP0 citations40