Inventor · disambiguated record
Masaharu Tokuhara
Also filed as: KAWAKAMI HIROMI · TOKUHARA MASAHARU
29 granted patents·442 citations·filing 1976–2002
97Inventor score
Files withSONY CORP29
Top patents by PatentIndex Score
29 records- 0189US4862269AMemory control apparatusSONY CORP·Filed 1988·Granted Aug 29, 1989·85 cites·28 claims
- 0282US7283174B2Video signal processing apparatus, video signal processing method and video source determining methodSONY CORP·Filed 2002·Granted Oct 16, 2007·26 cites·8 claims
- 0379US5786872AMotion detection circuit calculates difference between input video signal and one frame-period signalSONY CORP·Filed 1996·Granted Jul 28, 1998·71 cites·9 claims
- 0470US4322751ADetector circuit for a television receiverSONY CORP·Filed 1979·Granted Mar 30, 1982·16 cites·6 claims
- 0569US4587554ACRT drive control circuitSONY CORP·Filed 1984·Granted May 6, 1986·18 cites·6 claims
- 0668US4261016ATelevision receiverSONY CORP·Filed 1979·Granted Apr 7, 1981·15 cites·8 claims
- 0767US5021870AInterpolation of scan lines from video signals having interlaced scan linesSONY CORP·Filed 1989·Granted Jun 4, 1991·22 cites·34 claims
- 0865US4631589ADark level restoring circuitSONY CORP·Filed 1984·Granted Dec 23, 1986·15 cites·7 claims
- 0964US4673983APicture-in-picture television receiversSONY CORP·Filed 1986·Granted Jun 16, 1987·19 cites·4 claims
- 1063US4972259AAdaptive comb filter circuit including a plurality of filters and a switching means which results in improved movement detection in television signalsSONY CORP·Filed 1989·Granted Nov 20, 1990·18 cites·14 claims
- 1159US4169248AOscillating circuitSONY CORP·Filed 1978·Granted Sep 25, 1979·11 cites·10 claims
- 1257US4263675AAFT circuitSONY CORP·Filed 1979·Granted Apr 21, 1981·10 cites·8 claims
- 1353US5260786ANon-interlace television for multi-color standardsSONY CORP·Filed 1991·Granted Nov 9, 1993·16 cites·5 claims
- 1453US4996595AFlicker reduction apparatusSONY CORP·Filed 1989·Granted Feb 26, 1991·13 cites·22 claims
- 1549US4156255ATelevision receiver with synchronous detection and automatic fine tuningSONY CORP·Filed 1977·Granted May 22, 1979·8 cites·9 claims
- 1648US4668974ADigital scan converterSONY CORP·Filed 1985·Granted May 26, 1987·9 cites·8 claims
- 1747US4283792AAutomatic fine tuning circuitSONY CORP·Filed 1979·Granted Aug 11, 1981·7 cites·6 claims
- 1844US4163196ADemodulating apparatus with phase shift compensationSONY CORP·Filed 1978·Granted Jul 31, 1979·6 cites·11 claims
- 1943US4275420ATelevision receiver with a ghost detectorSONY CORP·Filed 1980·Granted Jun 23, 1981·7 cites·6 claims
- 2041US5093715AAdaptive comb filter for separating at least one component of a video signalSONY CORP·Filed 1990·Granted Mar 3, 1992·8 cites·27 claims
- 2141US4110635AAmplifying circuitSONY CORP·Filed 1976·Granted Aug 29, 1978·5 cites·7 claims
- 2240US4234963ASynchronous detector particularly adapted for a video IF signalSONY CORP·Filed 1978·Granted Nov 18, 1980·5 cites·7 claims
- 2339US5475436ASampling rate converting system for converting the sampling rate of a video signalSONY CORP·Filed 1994·Granted Dec 12, 1995·6 cites·8 claims
- 2439US5426470ALuminance and chrominance signal separation circuit employing comparison of level detected signal with a reference levelSONY CORP·Filed 1993·Granted Jun 20, 1995·9 cites·8 claims
- 2535US5227866ATelevision receiver for extended definition video signal detects number of scan lines and controls signal processorsSONY CORP·Filed 1992·Granted Jul 13, 1993·4 cites·6 claims
- 2635US4238771AMuting circuitSONY CORP·Filed 1978·Granted Dec 9, 1980·3 cites·11 claims
- 2734US4985701ATime-division bit number conversion circuitSONY CORP·Filed 1989·Granted Jan 15, 1991·4 cites·8 claims
- 2833US4941046ASignal processing circuit for a moving detection circuit which includes coefficient generator wherein a number of delay devices are connected in series with the first one receiving the output of a moving detection circuit and including a time base filterSONY CORP·Filed 1989·Granted Jul 10, 1990·3 cites·11 claims
- 2930US4370676ACarrier regenerating circuit for a synchronous detectorSONY CORP·Filed 1981·Granted Jan 25, 1983·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →