Inventor · disambiguated record
Takashi Furuhata
Also filed as: FURUHATA TAKASHI · YUMDE YASUFUMI
36 granted patents·1 pending application·813 citations·filing 1973–2010
98Inventor score
Top patents by PatentIndex Score
37 records- 0193US4907081ACompression and coding device for video signalsHITACHI LTD·Filed 1988·Granted Mar 6, 1990·137 cites·36 claims
- 0293US4210927AMethod for transmitting a color video signal on a narrow-band transmission lineHITACHI LTD·Filed 1978·Granted Jul 1, 1980·84 cites·14 claims
- 0390US4568986AVariable speed playback controller for a video tape recorderHITACHI LTD·Filed 1983·Granted Feb 4, 1986·40 cites·5 claims
- 0485US4825299AMagnetic recording/reproducing apparatus utilizing phase comparatorHITACHI LTD·Filed 1987·Granted Apr 25, 1989·54 cites·8 claims
- 0584US4746996ASkew error correction circuit for video signal reproducing apparatusHITACHI LTD·Filed 1985·Granted May 24, 1988·50 cites·7 claims
- 0681US5907364ADisplay device for information signalsHITACHI LTD·Filed 1996·Granted May 25, 1999·86 cites·15 claims
- 0778US4292652AMethod of receiving a video signalHITACHI LTD·Filed 1978·Granted Sep 29, 1981·23 cites·17 claims
- 0877US4843493ARotary head type magnetic recording and reproducing apparatus and method of producing tracking control signals thereforHITACHI LTD·Filed 1986·Granted Jun 27, 1989·24 cites·25 claims
- 0977US4688081AApparatus for correcting time base error of video signalHITACHI LTD·Filed 1986·Granted Aug 18, 1987·32 cites·39 claims
- 1075US4916553AVideo signal recording and reproducing method and apparatusHITACHI LTD·Filed 1988·Granted Apr 10, 1990·32 cites·57 claims
- 1172US4772950AMethod and apparatus for sampling and processing a video signalHITACHI LTD·Filed 1984·Granted Sep 20, 1988·20 cites·26 claims
- 1271US5363251AMagnetic recorIding deviceMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Nov 8, 1994·25 cites·2 claims
- 1369US4301395APhase-lock control deviceHITACHI LTD·Filed 1978·Granted Nov 17, 1981·16 cites·9 claims
- 1468US3941921ASystem for converting frequency band of picture signalHITACHI LTD·Filed 1973·Granted Mar 2, 1976·12 cites·10 claims
- 1562US4366399AFrequency discrimination circuitHITACHI LTD·Filed 1980·Granted Dec 28, 1982·11 cites·6 claims
- 1660US5374955AHigh-definition imaging device, and apparatuses for recording and playing back high-definition picture informationHITACHI LTD·Filed 1993·Granted Dec 20, 1994·20 cites·16 claims
- 1756US5280396AVideo signal processing apparatus for correcting time base of video signalHITACHI LTD·Filed 1991·Granted Jan 18, 1994·17 cites·10 claims
- 1855US4954902ATracking control method and device in rotary head type magnetic recording and reproducing apparatusHITACHI LTD·Filed 1989·Granted Sep 4, 1990·13 cites·15 claims
- 1953US5499145AMagnetic recording apparatus with capability of recording signals of a plurality of different television systemsHITACHI LTD·Filed 1993·Granted Mar 12, 1996·14 cites·19 claims
- 2053US4873582AVideo signal and method therefor time axis altering circuit used in a video tape recorder for recording a broadband video signalHITACHI LTD·Filed 1988·Granted Oct 10, 1989·12 cites·18 claims
- 2153US4600953AHead switching signal producing circuit for a magnetic recording and reproducing apparatusHITACHI LTD·Filed 1984·Granted Jul 15, 1986·8 cites·19 claims
- 2252US6104865AVideo signal recording and/or reproducing apparatus for recording and/or reproducing a signal obtained by converting a number of scanning lines of a video signalHITACHI LTD·Filed 1992·Granted Aug 15, 2000·14 cites·19 claims
- 2348US4507690ADevice for controlling consecutive recording of video information signals from video cameraHITACHI LTD·Filed 1982·Granted Mar 26, 1985·8 cites·6 claims
- 2447US4701583AGas switchTAKAMATSU ELECTRIC WORKS LTD·Filed 1986·Granted Oct 20, 1987·9 cites·23 claims
- 2543US4967161ASignal processing method and apparatusHITACHI LTD·Filed 1989·Granted Oct 30, 1990·6 cites·23 claims
- 2643US4599569AMethod and apparatus for detecting a phase or frequency error of a signalHITACHI LTD·Filed 1984·Granted Jul 8, 1986·8 cites·4 claims
- 2742US2011079586A1Method and Apparatus for Manufacturing Coreless ArmatureSHICOH CO LTD·Filed 2010·Application pending·0 cites
- 2841US5414523AAudio signal recording/reproducing apparatus for recording and reproducing high-definition television system audio signal of a plurality of channelsHITACHI LTD·Filed 1992·Granted May 9, 1995·7 cites·19 claims
- 2941US5323273AAudio signal recording and playback apparatus of magnetic recording and playback apparatusHITACHI LTD·Filed 1991·Granted Jun 21, 1994·7 cites·15 claims
- 3041US4972335AVideo signal recording and reproducing apparatus and method suitable for recording video signals including horizontal scanning line signalsHITACHI LTD·Filed 1989·Granted Nov 20, 1990·6 cites·24 claims
- 3140US5239421AVideo signal processing method and apparatus with timebase disturbance correction and dropout compensationHITACHI LTD·Filed 1991·Granted Aug 24, 1993·7 cites·10 claims
- 3234US5272519ARecording/reproducing apparatus employing sum and difference sequential circuitry for lines adjacent in the second or third dimensional direction followed by time base conversion circuitryHITACHI LTD·Filed 1991·Granted Dec 21, 1993·3 cites·29 claims
- 3331US5699471AMagnetic recording and reproducing apparatus of video signalsHITACHI LTD·Filed 1994·Granted Dec 16, 1997·2 cites·19 claims
- 3431US4004082AMethod and system for multiplexing signal for transmissionHITACHI LTD·Filed 1974·Granted Jan 18, 1977·1 cites·13 claims
- 3530US4723058AGas switchTAKAMATSU ELECTRIC WORKS LTD·Filed 1986·Granted Feb 2, 1988·3 cites·26 claims
- 3630US4642708AMagnetic recording and reproducing apparatusHITACHI LTD·Filed 1985·Granted Feb 10, 1987·1 cites·8 claims
- 3727US4761523AGas switch with pressure recease coverTAKAMATSU ELECTRIC WORKS LTD·Filed 1987·Granted Aug 2, 1988·1 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Takashi Furuhata files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →