Inventor · disambiguated record
Masuo Oku
Also filed as: OKU MASUO
53 granted patents·20 pending applications·1,531 citations·filing 1983–2025
99Inventor score
Files withMAXELL LTD34HITACHI LTD29HITACHI AMERICA LTD6HITACHI INDUSTRY & CONTROL SOLUTIONS LTD2ASAHI TAKESHI1
Top patents by PatentIndex Score
73 records- 0196US5687275ATrick 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
- 0294US5898695ADecoder for compressed and multiplexed video and audio dataHITACHI LTD·Filed 1996·Granted Apr 27, 1999·166 cites·38 claims
- 0394US5627655ARecording apparatus and reproducing apparatus for video signalsHITACHI LTD·Filed 1994·Granted May 6, 1997·137 cites·20 claims
- 0493US5729649AMethods 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
- 0591US11668650B2Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection systemMAXELL LTD·Filed 2022·Granted Jun 6, 2023·1 cites·13 claims
- 0691US6477185B1Demultiplexing and decoding apparatus for coded audio and video dataHITACHI LTD·Filed 1998·Granted Nov 5, 2002·92 cites·4 claims
- 0790US4669072AControl apparatus for optical video disk recorder/playerHITACHI LTD·Filed 1983·Granted May 26, 1987·42 cites·2 claims
- 0890US2025378661A1Augmented reality display device and augmented reality display methodMAXELL LTD·Filed 2025·Application pending·0 cites
- 0989US11346776B2Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection systemMAXELL LTD·Filed 2018·Granted May 31, 2022·3 cites·13 claims
- 1089US5966385ADecoder for compressed and multiplexed video and audio dataHITACHI LTD·Filed 1998·Granted Oct 12, 1999·98 cites·15 claims
- 1189US4541084AFocus servo system having object lens protection circuit for an optical disc playerHITACHI LTD·Filed 1983·Granted Sep 10, 1985·35 cites·5 claims
- 1288US6710817B2Decoder device and receiver using the sameHITACHI LTD·Filed 2001·Granted Mar 23, 2004·25 cites·10 claims
- 1387US5933567AMethod and apparatus for controlling the position of the heads of a digital video tape recorder during trick play operation and for recording digital data on a tapeHITACHI AMERICA LTD·Filed 1994·Granted Aug 3, 1999·36 cites·24 claims
- 1487US5550640ADigital video signal recording and reproducing apparatus and method for setting a number of compression blocks according to different operational modesHITACHI LTD·Filed 1994·Granted Aug 27, 1996·86 cites·17 claims
- 1586US6141486AMethods and apparatus for recording digital data including sync block and track number information for use during trick play operationHITACHI AMERICA LTD·Filed 1999·Granted Oct 31, 2000·81 cites·10 claims
- 1684US12423929B2Augmented reality display device and augmented reality display methodMAXELL LTD·Filed 2024·Granted Sep 23, 2025·0 cites·20 claims
- 1784US11508134B2Augmented reality display device and augmented reality display methodMAXELL LTD·Filed 2018·Granted Nov 22, 2022·3 cites·10 claims
- 1884US5623344ADigital video recording device with trick play capabilityHITACHI AMERICA LTD·Filed 1994·Granted Apr 22, 1997·50 cites·23 claims
- 1983US2025349093A1Mixed reality display device and mixed reality display methodMAXELL LTD·Filed 2025·Application pending·0 cites
- 2082US12072284B2Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection systemMAXELL LTD·Filed 2023·Granted Aug 27, 2024·0 cites·13 claims
- 2182US5636316APicture signal digital processing unitHITACHI LTD·Filed 1994·Granted Jun 3, 1997·63 cites·9 claims
- 2281US7643089B2Decoder device and receiver using the sameHITACHI LTD·Filed 2008·Granted Jan 5, 2010·4 cites·12 claims
- 2381US5675331ADecoding device for decoding a variety of code signalsHITACHI LTD·Filed 1995·Granted Oct 7, 1997·59 cites·11 claims
- 2480US12235444B2Linked display system and head-mounted displayMAXELL LTD·Filed 2023·Granted Feb 25, 2025·0 cites·7 claims
- 2580US11989838B2Mixed reality display device and mixed reality display methodMAXELL LTD·Filed 2019·Granted May 21, 2024·2 cites·20 claims
- 2679US2025373779A1Image display apparatus and image display systemMAXELL LTD·Filed 2025·Application pending·0 cites
- 2778US12033286B2Augmented reality display device and augmented reality display methodMAXELL LTD·Filed 2022·Granted Jul 9, 2024·0 cites·8 claims
- 2878US4630252AControl apparatus for optical disc player for locating blank tracksHITACHI LTD·Filed 1983·Granted Dec 16, 1986·22 cites·6 claims
- 2978US2025265794A1Virtual reality sharing method and systemMAXELL LTD·Filed 2025·Application pending·0 cites
- 3077US12387442B2Mixed reality display device and mixed reality display methodMAXELL LTD·Filed 2024·Granted Aug 12, 2025·0 cites·19 claims
- 3176US7375761B2Receiver having motion picture data decoderHITACHI LTD·Filed 2004·Granted May 20, 2008·9 cites·11 claims
- 3276US2025264939A1Head-mounted displayMAXELL LTD·Filed 2025·Application pending·0 cites
- 3375US2025240389A1Watching monitoring device and watching monitoring methodMAXELL LTD·Filed 2025·Application pending·0 cites
- 3474US6310654B1Decoder device and receiver using the sameHITACHI LTD·Filed 1999·Granted Oct 30, 2001·32 cites·3 claims
- 3574US5585933ARecording 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
- 3674US2024265370A1Cashless payment system and information terminalMAXELL LTD·Filed 2024·Application pending·0 cites
- 3774US2025252617A1Remote operation instructing system, and mount type deviceMAXELL LTD·Filed 2025·Application pending·0 cites
- 3874US2025164787A1Linked display system and head-mounted displayMAXELL LTD·Filed 2025·Application pending·0 cites
- 3973US12307553B2Remote operation instructing system, and mount type deviceMAXELL LTD·Filed 2024·Granted May 20, 2025·0 cites·6 claims
- 4070US6807191B2Decoder for compressed and multiplexed video and audio dataHITACHI LTD·Filed 1999·Granted Oct 19, 2004·30 cites·2 claims
- 4170US6452638B1Decoder device and receiver using the sameHITACHI LTD·Filed 2001·Granted Sep 17, 2002·6 cites·8 claims
- 4269US5729303AMemory control system and picture decoder using the sameHITACHI LTD·Filed 1996·Granted Mar 17, 1998·40 cites·19 claims
- 4369US2024414286A1Information device and camera image sharing systemMAXELL LTD·Filed 2024·Application pending·0 cites
- 4468US5583650ADigital recording and playback device error correction methods and apparatus for use with trick play dataHITACHI AMERICA LTD·Filed 1995·Granted Dec 10, 1996·35 cites·22 claims
- 4567US5880786AApparatus for picture decoding having frame memories commonly connected to one data bus and one address busHITACHI LTD·Filed 1995·Granted Mar 9, 1999·39 cites·16 claims
- 4667US4858030AReproducing apparatus of a video disc playerHITACHI LTD·Filed 1987·Granted Aug 15, 1989·21 cites·19 claims
- 4765US6084637ADecoding and displaying device for coded picture dataHITACHI LTD·Filed 1999·Granted Jul 4, 2000·25 cites·10 claims
- 4864US11852811B2Linked display system and head-mounted displayMAXELL LTD·Filed 2019·Granted Dec 26, 2023·0 cites·11 claims
- 4963US12327319B2Virtual reality sharing method and systemMAXELL LTD·Filed 2020·Granted Jun 10, 2025·0 cites·8 claims
- 5063US4805040ADrop-out correction circuit in an apparatus for correcting time base error with inhibition of time-base information during dropoutHITACHI LTD·Filed 1987·Granted Feb 14, 1989·18 cites·3 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →