Inventor · disambiguated record
Shigemitsu Higuchi
Also filed as: HIGUCHI SHIGEMITSU
42 granted patents·2 pending applications·996 citations·filing 1981–2006
98Inventor score
Top patents by PatentIndex Score
44 records- 0195US6501718B1Disk, recording and reproduction apparatus, and recording and reproduction methodHITACHI LTD·Filed 2000·Granted Dec 31, 2002·56 cites·13 claims
- 0295US6243340B1Information recording apparatus including system control means for producing managing information for managing data recorded on an information recording medium and preventing designated data from being accessedHITACHI LTD·Filed 1998·Granted Jun 5, 2001·68 cites·1 claims
- 0393US6463022B1Information recording medium, enclosing casing of information recording medium, and information recording apparatus using the sameHITACHI LTD·Filed 2000·Granted Oct 8, 2002·28 cites·2 claims
- 0493US4907081ACompression and coding device for video signalsHITACHI LTD·Filed 1988·Granted Mar 6, 1990·137 cites·36 claims
- 0591US4422109AMagnetic recording and reproducing apparatus automatically adjustable to each individual magnetic tapeHITACHI LTD·Filed 1982·Granted Dec 20, 1983·46 cites·39 claims
- 0688US5057949ADigital magnetic reproducing apparatus with variable tape speedHITACHI LTD·Filed 1989·Granted Oct 15, 1991·38 cites·16 claims
- 0785US4825299AMagnetic recording/reproducing apparatus utilizing phase comparatorHITACHI LTD·Filed 1987·Granted Apr 25, 1989·54 cites·8 claims
- 0883US6754442B1Method and apparatus for recording/reproducing digital video signal or audio signal, and optical disk apparatusHITACHI LTD·Filed 2000·Granted Jun 22, 2004·13 cites·12 claims
- 0983US4401971AAlarm device for a vehicle including priority control for plural alarm conditionsHITACHI LTD·Filed 1981·Granted Aug 30, 1983·105 cites·6 claims
- 1082US5636316APicture signal digital processing unitHITACHI LTD·Filed 1994·Granted Jun 3, 1997·63 cites·9 claims
- 1181US4551777ATracking servo system for magnetic recording and reproducing apparatus using flexible magnetic diskHITACHI LTD·Filed 1982·Granted Nov 5, 1985·24 cites·5 claims
- 1280US6680897B2Optical disk and recording/reproduction apparatus using the sameHITACHI LTD·Filed 2002·Granted Jan 20, 2004·12 cites·6 claims
- 1379US6788346B2Camera information recording apparatus for recording image data in an optical disk wherein managing information is stored when the residual storage of a battery decreasesHITACHI LTD·Filed 2001·Granted Sep 7, 2004·8 cites·6 claims
- 1479US5495371AMagnetic tape library device and method for maintaining magnetic recording and reproducing device and magnetic headHITACHI LTD·Filed 1993·Granted Feb 27, 1996·30 cites·11 claims
- 1575US5808824ATape feed control systemHITACHI LTD·Filed 1995·Granted Sep 15, 1998·30 cites·9 claims
- 1674US7174092B2Method and apparatus for recording/reproducing digital video signal or audio signal, and optical disk apparatusHITACHI LTD·Filed 2004·Granted Feb 6, 2007·7 cites·6 claims
- 1771US5617535ARecording and playbackk apparatusHITACHI LTD·Filed 1992·Granted Apr 1, 1997·20 cites·38 claims
- 1869US6657666B1Method and apparatus for recording image informationHITACHI LTD·Filed 1999·Granted Dec 2, 2003·39 cites·10 claims
- 1969US6359842B1Disc having a semiconductor memoryHITACHI LTD·Filed 1999·Granted Mar 19, 2002·39 cites·7 claims
- 2066US6373799B1Optical disk and recording/reproduction apparatus using the sameHITACHI LTD·Filed 1999·Granted Apr 16, 2002·27 cites·17 claims
- 2163US5144453AApparatus for delaying longitudinal time code signal for digital video tape recorderHITACHI LTD·Filed 1989·Granted Sep 1, 1992·12 cites·16 claims
- 2261US5392163ADigital video signal reproducing apparatus with compression and expansion of playback timeHITACHI LTD·Filed 1993·Granted Feb 21, 1995·14 cites·14 claims
- 2360US6347068B2Information recording medium, enclosing casing of information recording medium, and information recording apparatus using the sameHITACHI LTD·Filed 2001·Granted Feb 12, 2002·2 cites·2 claims
- 2460US4622603AHead positioning system for magnetic recording/playback apparatusHITACHI LTD·Filed 1984·Granted Nov 11, 1986·12 cites·4 claims
- 2559US8180197B2Method and apparatus for recording/reproducing digital video signal or audio signal, and optical disk apparatusNAGAI YUTAKA·Filed 2006·Granted May 15, 2012·0 cites·12 claims
- 2659US5438459AMethod of processing and recording data while reproducing the same and apparatus for the methodHITACHI LTD·Filed 1992·Granted Aug 1, 1995·12 cites·18 claims
- 2756US5041904AVideo signal processing circuitHITACHI LTD·Filed 1989·Granted Aug 20, 1991·14 cites·3 claims
- 2855US4613920AMagnetic head for magnetic diskHITACHI LTD·Filed 1983·Granted Sep 23, 1986·8 cites·8 claims
- 2954US4422108ATape recorderHITACHI LTD·Filed 1982·Granted Dec 20, 1983·11 cites·11 claims
- 3051US5739976AMagnetic recording and reproducing apparatusHITACHI LTD·Filed 1995·Granted Apr 14, 1998·10 cites·2 claims
- 3148US5471352ARecording/playback apparatus in which head and tape are held in intermittent contact during rapid searchHITACHI LTD·Filed 1993·Granted Nov 28, 1995·7 cites·26 claims
- 3248US4661754AControl circuit for a stepping motorHITACHI LTD·Filed 1985·Granted Apr 28, 1987·10 cites·4 claims
- 3348US2004120692A1Camera information recording apparatus for recording image data in an optical disk wherein managing information is stored when the residual storage of a battery decreasesHITACHI LTD·Filed 2003·Application pending·0 cites
- 3446US2002191516A1Information recording medium, enclosing casing of information recording medium, and information recording apparatus using the sameHITACHI LTD·Filed 2002·Application pending·0 cites
- 3545US5521769AMagnetic tape drive with displaceable head capable of a re-try operationHITACHI LTD·Filed 1993·Granted May 28, 1996·6 cites·16 claims
- 3645US5500775AData recording and reproducing apparatusHITACHI LTD·Filed 1993·Granted Mar 19, 1996·6 cites·8 claims
- 3743US5488520AData recording and playback apparatus using helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical trackHITACHI LTD·Filed 1993·Granted Jan 30, 1996·4 cites·23 claims
- 3843US5027209AInterpolation circuit for digital signal processorHITACHI LTD·Filed 1989·Granted Jun 25, 1991·8 cites·6 claims
- 3942US5434735ARecording/playback apparatus for controlling contact between a head and a magnetic tape by controlled spouting of air in the vicinity of the headHITACHI LTD·Filed 1993·Granted Jul 18, 1995·5 cites·15 claims
- 4040US6229777B1Information recording medium, apparatus and control method thereforHITACHI LTD·Filed 1999·Granted May 8, 2001·4 cites·19 claims
- 4138US5235479ADigital video tape recorder with tracking central circuit for causing positions of existing recorded track and newly recorded track to coincide during editingHITACHI LTD·Filed 1989·Granted Aug 10, 1993·3 cites·6 claims
- 4234US5220477ACassette tape-loading apparatusHITACHI LTD·Filed 1991·Granted Jun 15, 1993·3 cites·8 claims
- 4332US5737146AData recording and playback apparatus using a helical scan system with magnetic head for recording and playing back pattern signal for tracking in tracking area within helical trackHITACHI LTD·Filed 1995·Granted Apr 7, 1998·1 cites·16 claims
- 4430US5936791AHelical scan data recording and playback method and apparatus wherein reference helical tracks preceding data recording area on magnetic tape are played back before recording or playback of target dataHITACHI LTD·Filed 1997·Granted Aug 10, 1999·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →