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Toshihiko Numakura
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Kamakura, JP
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last 30 patents
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Patent Grant
Anti-piracy video tape system has anti-piracy components added to t...
Patent number
5,243,411
Issue date
Sep 7, 1993
Sony Corporation
Yoshiki Shirochi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus for recording low and high bond components of a chrominan...
Patent number
4,851,928
Issue date
Jul 25, 1989
Sony Corporation
Toshihiko Numakura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Recording and reproducing apparatus for time compressed video signa...
Patent number
4,780,769
Issue date
Oct 25, 1988
Sony Corporation
Toshihiko Numakura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transducer deflection apparatus for use in a video signal reproduci...
Patent number
4,268,874
Issue date
May 19, 1981
Sony Corporation
Kazuo Yamagiwa
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for recording and reproducing a color-aligned...
Patent number
4,233,621
Issue date
Nov 11, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secam recording and reproducing system
Patent number
4,220,964
Issue date
Sep 2, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Color recorder for reducing crosstalk
Patent number
4,208,673
Issue date
Jun 17, 1980
Sony Corporation
Toshihiko Numakura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Video recorder having means for maintaining constant the amplitude...
Patent number
4,193,084
Issue date
Mar 11, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Recording and playback modulation method and apparatus
Patent number
4,186,411
Issue date
Jan 29, 1980
Sony Corporation
Toshihiko Numakura
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus and method for reproducing video signals
Patent number
4,180,833
Issue date
Dec 25, 1979
Sony Corporation
Masaru Nishikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Video signal processing circuitry for compensating different averag...
Patent number
4,175,272
Issue date
Nov 20, 1979
Sony Corporation
Toshihiko Numakura
H04 - ELECTRIC COMMUNICATION TECHNIQUE