Inventor · disambiguated record
Masahiko Achiha
Also filed as: ACHIHA MASAHIKO
14 granted patents·437 citations·filing 1979–1988
94Inventor score
Top patents by PatentIndex Score
14 records- 0193US4296436ANoise reducing systemHITACHI LTD·Filed 1979·Granted Oct 20, 1981·75 cites·5 claims
- 0289US4626891AMotion detecting circuit utilizing inter-frame difference signals of successive fieldsHITACHI LTD·Filed 1984·Granted Dec 2, 1986·50 cites·10 claims
- 0388US4295154ADigital video and audio file systemNIPPON TELEGRAPH & TELEPHONE·Filed 1979·Granted Oct 13, 1981·82 cites·12 claims
- 0487US4530004AColor television signal processing circuitHITACHI LTD·Filed 1982·Granted Jul 16, 1985·44 cites·12 claims
- 0577US4739390ATelevision signal processing circuitHITACHI LTD·Filed 1986·Granted Apr 19, 1988·32 cites·8 claims
- 0676US4636857AScanning line interpolation circuit for television signalHITACHI LTD·Filed 1985·Granted Jan 13, 1987·31 cites·5 claims
- 0773US4794454AMovement detection circuit of a video signal used in a television receiverHITACHI LTD·Filed 1987·Granted Dec 27, 1988·28 cites·20 claims
- 0865US4821112ADetection circuit for detecting standard television signals and nonstandard television signalsHITACHI LTD·Filed 1987·Granted Apr 11, 1989·20 cites·4 claims
- 0957US4775888AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1988·Granted Oct 4, 1988·14 cites·24 claims
- 1056US4811092AMovement detector for composite color television signalsHITACHI LTD·Filed 1987·Granted Mar 7, 1989·25 cites·4 claims
- 1156US4736252AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1986·Granted Apr 5, 1988·14 cites·10 claims
- 1251US4348689APhase adjusting system for carrier chrominance signalHITACHI LTD·Filed 1980·Granted Sep 7, 1982·9 cites·7 claims
- 1345US4688084AMovement detection circuit for television signalsHITACHI LTD·Filed 1986·Granted Aug 18, 1987·8 cites·5 claims
- 1437US4970601AVideo signal processing apparatus for video tape recorderHITACHI LTD·Filed 1988·Granted Nov 13, 1990·5 cites·4 claims
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