Inventor · disambiguated record
Hiroo Okamoto
Also filed as: OKAMOTO HIROO
138 granted patents·28 pending applications·2,056 citations·filing 1978–2024
99Inventor score
Top patents by PatentIndex Score
166 records- 0197US4682332AMethod and apparatus for recording digital signalsHITACHI LTD·Filed 1985·Granted Jul 21, 1987·85 cites·7 claims
- 0296US5687275ATrick play data indentification methods and apparatus for use with digital video recording and playback devicesHITACHI AMERICA LTD·Filed 1995·Granted Nov 11, 1997·104 cites·23 claims
- 0394US8644684B2Editing method and recording and reproducing deviceYOSHIDA SUSUMU·Filed 2009·Granted Feb 4, 2014·13 cites·2 claims
- 0494US5912969AInformation receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording informationHITACHI LTD·Filed 1997·Granted Jun 15, 1999·95 cites·15 claims
- 0594US5627655ARecording apparatus and reproducing apparatus for video signalsHITACHI LTD·Filed 1994·Granted May 6, 1997·137 cites·20 claims
- 0694US4646301ADecoding method and system for doubly-encoded Reed-Solomon codesHITACHI LTD·Filed 1984·Granted Feb 24, 1987·46 cites·11 claims
- 0793US6804453B1Digital signal recording/reproducing apparatusHITACHI LTD·Filed 2000·Granted Oct 12, 2004·52 cites·18 claims
- 0893US6041161AInput-output circuit, recording apparatus and reproduction apparatus for digital video signalHITACHI LTD·Filed 1997·Granted Mar 21, 2000·50 cites·10 claims
- 0993US5729649AMethods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operationHITACHI AMERICA LTD·Filed 1996·Granted Mar 17, 1998·64 cites·11 claims
- 1092US7613383B2Editing method and recording and reproducing deviceHITACHI LTD·Filed 2005·Granted Nov 3, 2009·7 cites·4 claims
- 1192US6163644AMethod and apparatus for receiving and/or reproducing digital signalHITACHI LTD·Filed 1996·Granted Dec 19, 2000·103 cites·16 claims
- 1289US5878188AApparatus for recording and reproducing temporally compressed digital information signalHITACHI LTD·Filed 1994·Granted Mar 2, 1999·32 cites·11 claims
- 1389US4677622AError correction method and systemHITACHI LTD·Filed 1984·Granted Jun 30, 1987·33 cites·5 claims
- 1488US5878010AMethod and apparatus for recording digital signalHITACHI LTD·Filed 1995·Granted Mar 2, 1999·41 cites·27 claims
- 1588US5699370AInformation recording and reproduction apparatus to be controlled by temporal informationHITACHI LTD·Filed 1995·Granted Dec 16, 1997·49 cites·15 claims
- 1686US4233596AFlare monitoring apparatusSHOWA YUKA KK·Filed 1978·Granted Nov 11, 1980·32 cites·3 claims
- 1785US6397000B1Digital signal recording devices, digital signal recording/ playback devices, and digital signal receiving/recording/playback devicesHITACHI LTD·Filed 1998·Granted May 28, 2002·67 cites·3 claims
- 1885US6321025B1Method and apparatus for receiving and/or reproducing digital signalHITACHI LTD·Filed 2000·Granted Nov 20, 2001·19 cites·20 claims
- 1985US5825969AInformation management apparatus for inhibiting reproduction in a video cassette recorderHITACHI LTD·Filed 1997·Granted Oct 20, 1998·30 cites·17 claims
- 2084US6519411B1Digital signal recording and reproduction apparatus suitable for recording and reproducing a compressed video signalHITACHI LTD·Filed 2000·Granted Feb 11, 2003·15 cites·4 claims
- 2184US5623344ADigital video recording device with trick play capabilityHITACHI AMERICA LTD·Filed 1994·Granted Apr 22, 1997·50 cites·23 claims
- 2284US4758907AMethod and apparatus for recording and/or reproducing PCM signalsHITACHI LTD·Filed 1986·Granted Jul 19, 1988·28 cites·10 claims
- 2384US4622600ARotary-head type PCM data recording/reproducing method and apparatus with a redundancy-reduced control data formatHITACHI LTD·Filed 1984·Granted Nov 11, 1986·25 cites·9 claims
- 2483US6600870B1Input-output circuit, recording apparatus and reproduction apparatus for digital video signalHITACHI LTD·Filed 1999·Granted Jul 29, 2003·23 cites·13 claims
- 2582US12198733B2Editing method and recording and reproducing deviceMAXELL LTD·Filed 2024·Granted Jan 14, 2025·0 cites·28 claims
- 2682US7310823B2Digital information recording apparatus and outputting apparatusHITACHI LTD·Filed 2002·Granted Dec 18, 2007·13 cites·15 claims
- 2782US4646170AMethod and apparatus for recording and reproducing a digital signal with a stationary headHITACHI LTD·Filed 1985·Granted Feb 24, 1987·28 cites·9 claims
- 2881US10199072B2Editing method and recording and reproducing deviceMAXELL LTD·Filed 2017·Granted Feb 5, 2019·1 cites·19 claims
- 2981US6587638B1Recording/ reproducing apparatus and input/ output deviceHITACHI LTD·Filed 1999·Granted Jul 1, 2003·36 cites·23 claims
- 3081US5719943ADigital information signal transmitting/receiving method and systemHITACHI LTD·Filed 1995·Granted Feb 17, 1998·70 cites·27 claims
- 3181US4590524AMultitrack PCM reproducing apparatusHITACHI LTD·Filed 1983·Granted May 20, 1986·22 cites·7 claims
- 3280US11929101B2Editing method and recording and reproducing deviceMAXELL LTD·Filed 2023·Granted Mar 12, 2024·0 cites·28 claims
- 3380US4905104ARotary head type digital signal recording and/or reproducing apparatus for recording and/or reproducing with a variable speedHITACHI LTD·Filed 1987·Granted Feb 27, 1990·26 cites·24 claims
- 3480US4758902APCM signal recording and reproducing apparatus including simultaneous error detection/correctionHITACHI LTD·Filed 1986·Granted Jul 19, 1988·25 cites·5 claims
- 3579US7483622B2Recording medium and method for reproducing information therefromHITACHI LTD·Filed 2005·Granted Jan 27, 2009·3 cites·4 claims
- 3679US7197232B2Digital information recording-reproducing apparatusHITACHI LTD·Filed 2004·Granted Mar 27, 2007·8 cites·8 claims
- 3779US6201654B1Method and apparatus for recording digital signalHITACHI LTD·Filed 1999·Granted Mar 13, 2001·24 cites·9 claims
- 3879US4649542ADigital signal transmission method providing high error correction capabilityHITACHI LTD·Filed 1984·Granted Mar 10, 1987·21 cites·6 claims
- 3978US8589970B2Content transmitter and receiver apparatus and content transmitting and receiving methodTERAOKA HIDETOSHI·Filed 2010·Granted Nov 19, 2013·8 cites·22 claims
- 4077US8984646B2Content transmission device and content reception deviceOHNO CHIYO·Filed 2009·Granted Mar 17, 2015·5 cites·5 claims
- 4177US6839851B1Digital signal processing apparatusHITACHI LTD·Filed 1999·Granted Jan 4, 2005·43 cites·19 claims
- 4277US5903704AApparatus for selectively recording and reproducing received analog and digital signalsHITACHI LTD·Filed 1995·Granted May 11, 1999·26 cites·13 claims
- 4376US11783863B2Editing method and recording and reproducing deviceMAXELL LTD·Filed 2022·Granted Oct 10, 2023·0 cites·28 claims
- 4476US7197229B2Digital signal recording devices, digital signal recording/playback devices, and digital signal receiving/recording/playback devicesHITACHI LTD·Filed 2005·Granted Mar 27, 2007·3 cites·6 claims
- 4576US6292618B1Image recording and reproducing apparatusHITACHI LTD·Filed 1998·Granted Sep 18, 2001·42 cites·31 claims
- 4675US8254758B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalOKAMOTO HIROO·Filed 2008·Granted Aug 28, 2012·1 cites·4 claims
- 4775US7151888B2Method and apparatus for temporarily giving copy permission for reproducing digital signalsHITACHI LTD·Filed 2001·Granted Dec 19, 2006·10 cites·35 claims
- 4875US6204985B1Information management apparatusHITACHI LTD·Filed 2000·Granted Mar 20, 2001·6 cites·8 claims
- 4974US8699864B2Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signalOWASHI HITOAKI·Filed 2009·Granted Apr 15, 2014·3 cites·2 claims
- 5074US5585933ARecording and/or reproducing apparatus for recording and/or reproducing image data compressed according to different compressing methodsHITACHI LTD·Filed 1994·Granted Dec 17, 1996·38 cites·17 claims
Showing the top 50 of 166 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →