Inventor · disambiguated record
Shigeru Hirahata
Also filed as: HIRAHATA SHIGERU
31 granted patents·5 pending applications·1,290 citations·filing 1979–2009
98Inventor score
Top patents by PatentIndex Score
36 records- 0198US5974218AMethod and apparatus for making a digest pictureHITACHI LTD·Filed 1996·Granted Oct 26, 1999·217 cites·22 claims
- 0297US4821226ADual port video memory system having a bit-serial address input portRCA LICENSING CORP·Filed 1987·Granted Apr 11, 1989·163 cites·8 claims
- 0392US5218436AProcessing circuit for a plurality of different TV signalsHITACHI LTD·Filed 1991·Granted Jun 8, 1993·156 cites·17 claims
- 0484US5132793ATelevision receiver compatible with both standard system television signal and high definition television signalHITACHI LTD·Filed 1990·Granted Jul 21, 1992·75 cites·11 claims
- 0583US5534934ATelevision receiver capable of enlarging and compressing imageHITACHI LTD·Filed 1994·Granted Jul 9, 1996·64 cites·6 claims
- 0681US5343238AWide-screen television receiver with aspect ratio conversion function and method of displaying a range to be magnified and displayedHITACHI LTD·Filed 1992·Granted Aug 30, 1994·61 cites·22 claims
- 0780US5249037AImage signal correction circuit and image signal processor using the circuitHITACHI LTD·Filed 1989·Granted Sep 28, 1993·41 cites·22 claims
- 0878US4733300AContour signal correction circuit for television receiverHITACHI LTD·Filed 1986·Granted Mar 22, 1988·36 cites·3 claims
- 0976US4853765ASequential scanning converter with frame comb filter and freeze frame featureHITACHI LTD·Filed 1988·Granted Aug 1, 1989·30 cites·5 claims
- 1075US5243421ASignal processor for a wide televison receiverHITACHI LTD·Filed 1991·Granted Sep 7, 1993·40 cites·6 claims
- 1173US4794454AMovement detection circuit of a video signal used in a television receiverHITACHI LTD·Filed 1987·Granted Dec 27, 1988·28 cites·20 claims
- 1272US5353065AApparatus for receiving wide/standard picture plane television signalHITACHI LTD·Filed 1992·Granted Oct 4, 1994·34 cites·12 claims
- 1372US4733297AVideo signal processing circuit of motion adaptive typeHITACHI LTD·Filed 1987·Granted Mar 22, 1988·26 cites·15 claims
- 1470US4953032AMotion signal generating circuit for use in a television receiverHITACHI LTD·Filed 1989·Granted Aug 28, 1990·25 cites·12 claims
- 1570US4298931ACharacter pattern display systemHITACHI LTD·Filed 1979·Granted Nov 3, 1981·19 cites·16 claims
- 1669US5276515ACompatible wide aspect ratio receiver with spatial filtering for variable zoomHITACHI LTD·Filed 1992·Granted Jan 4, 1994·33 cites·15 claims
- 1768US4802118AComputer memory refresh circuitHITACHI LTD·Filed 1984·Granted Jan 31, 1989·18 cites·9 claims
- 1867US4408197APattern display apparatusHITACHI LTD·Filed 1981·Granted Oct 4, 1983·21 cites·7 claims
- 1966US4388621ADrive circuit for character and graphic display deviceHITACHI LTD·Filed 1980·Granted Jun 14, 1983·21 cites·3 claims
- 2065US4748504AVideo memory control apparatusHITACHI LTD·Filed 1987·Granted May 31, 1988·20 cites·4 claims
- 2163US5029006AVideo signal processing circuit capable of enlarging and displaying a pictureHITACHI LTD·Filed 1989·Granted Jul 2, 1991·18 cites·5 claims
- 2260US6683956B1Encrypting conversion apparatus, decrypting conversion apparatus, cryptographic communication system, and electronic toll collection apparatusHITACHI LTD·Filed 1999·Granted Jan 27, 2004·36 cites·2 claims
- 2360US2010005414A1Display method and display deviceHITACHI LTD·Filed 2009·Application pending·0 cites
- 2458US6898578B2Recording apparatus for recording digital informationHITACHI LTD·Filed 2002·Granted May 24, 2005·2 cites·5 claims
- 2558US4591845ACharacter and graphic signal generating apparatusHITACHI LTD·Filed 1983·Granted May 27, 1986·15 cites·2 claims
- 2657US4775888AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1988·Granted Oct 4, 1988·14 cites·24 claims
- 2756US4736252AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1986·Granted Apr 5, 1988·14 cites·10 claims
- 2854US4473879AData transfer system in which time for transfer of data to a memory is matched to time required to store data in memoryHITACHI LTD·Filed 1982·Granted Sep 25, 1984·19 cites·6 claims
- 2951US4404552ADisplay device for both a character display and a graphic displayHITACHI LTD·Filed 1980·Granted Sep 13, 1983·13 cites·5 claims
- 3050US2005193350A1Display method and display deviceFiled 2005·Application pending·0 cites
- 3146US2003026430A1Encrypting conversion apparatus, decrypting conversion apparatus, cryptographic communication system, and electronic toll collection apparatusFiled 2002·Application pending·0 cites
- 3244US2005050314A1Electronic apparatus and method for starting up system of such apparatusFiled 2004·Application pending·0 cites
- 3343US6606385B1Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the sameHITACHI LTD·Filed 1998·Granted Aug 12, 2003·14 cites·21 claims
- 3440US5181110AVideo signal processing circuit capable of enlarging and displaying a pictureHITACHI LTD·Filed 1990·Granted Jan 19, 1993·10 cites·7 claims
- 3540US4417318AArrangement for control of the operation of a random access memory in a data processing systemHITACHI LTD·Filed 1979·Granted Nov 22, 1983·7 cites·8 claims
- 3640US2001014154A1Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the sameHITACHI LTD·Filed 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →