Inventor
OKU MASUO
JP54 patents
⚠️ This page may combine multiple inventors who share the name “OKU MASUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
26 patentsUS5898695AApr 27, 1999
Decoder for compressed and multiplexed video and audio data
HITACHI LTD166 citations99
US5627655AMay 6, 1997
Recording apparatus and reproducing apparatus for video signals
HITACHI LTD137 citations99
US5966385AOct 12, 1999
Decoder for compressed and multiplexed video and audio data
HITACHI LTD98 citations98
US6477185B1Nov 5, 2002
Demultiplexing and decoding apparatus for coded audio and video data
HITACHI LTD92 citations96
US5550640AAug 27, 1996
Digital video signal recording and reproducing apparatus and method for setting a number of compression blocks according to different operational modes
HITACHI LTD86 citations96
US6310654B1Oct 30, 2001
Decoder device and receiver using the same
HITACHI LTD32 citations95
US5636316AJun 3, 1997
Picture signal digital processing unit
HITACHI LTD63 citations95
US5675331AOct 7, 1997
Decoding device for decoding a variety of code signals
HITACHI LTD59 citations93
US6807191B2Oct 19, 2004
Decoder for compressed and multiplexed video and audio data
HITACHI LTD30 citations92
US6710817B2Mar 23, 2004
Decoder device and receiver using the same
HITACHI LTD25 citations92
US6084637AJul 4, 2000
Decoding and displaying device for coded picture data
HITACHI LTD25 citations92
US5907372AMay 25, 1999
Decoding/displaying device for decoding/displaying coded picture data generated by high efficiency coding for interlace scanning picture format
HITACHI LTD21 citations92
US5585933ADec 17, 1996
Recording and/or reproducing apparatus for recording and/or reproducing image data compressed according to different compressing methods
HITACHI LTD38 citations92
US4541084ASep 10, 1985
Focus servo system having object lens protection circuit for an optical disc player
HITACHI LTD35 citations92
US5729303AMar 17, 1998
Memory control system and picture decoder using the same
HITACHI LTD40 citations91
US4669072AMay 26, 1987
Control apparatus for optical video disk recorder/player
HITACHI LTD42 citations91
US6643453B1Nov 4, 2003
Motion picture recording/reproduction apparatus
HITACHI LTD22 citations89
US5880786AMar 9, 1999
Apparatus for picture decoding having frame memories commonly connected to one data bus and one address bus
HITACHI LTD39 citations89
US7375761B2May 20, 2008
Receiver having motion picture data decoder
HITACHI LTD9 citations83
US4858030AAug 15, 1989
Reproducing apparatus of a video disc player
HITACHI LTD21 citations82
US4630252ADec 16, 1986
Control apparatus for optical disc player for locating blank tracks
HITACHI LTD22 citations81
US5778140AJul 7, 1998
Video signal processing apparatus
HITACHI LTD15 citations74
US4805040AFeb 14, 1989
Drop-out correction circuit in an apparatus for correcting time base error with inhibition of time-base information during dropout
HITACHI LTD18 citations74
US7643089B2Jan 5, 2010
Decoder device and receiver using the same
HITACHI LTD4 citations73
US6452638B1Sep 17, 2002
Decoder device and receiver using the same
HITACHI LTD6 citations73
US5731838AMar 24, 1998
Apparatus for decoding moving picture data
HITACHI LTD7 citations70
MAXELL LTD
17 patentsUS11989838B2May 21, 2024
Mixed reality display device and mixed reality display method
MAXELL LTD2 citations73
US11508134B2Nov 22, 2022
Augmented reality display device and augmented reality display method
MAXELL LTD3 citations73
US11668650B2Jun 6, 2023
Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection system
MAXELL LTD1 citations72
US11346776B2May 31, 2022
Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection system
MAXELL LTD3 citations72
US12423929B2Sep 23, 2025
Augmented reality display device and augmented reality display method
MAXELL LTD0 citations63
US12387442B2Aug 12, 2025
Mixed reality display device and mixed reality display method
MAXELL LTD0 citations63
US12307553B2May 20, 2025
Remote operation instructing system, and mount type device
MAXELL LTD0 citations63
US12033286B2Jul 9, 2024
Augmented reality display device and augmented reality display method
MAXELL LTD0 citations63
US11915339B2Feb 27, 2024
Remote operation instructing system, and mount type device
MAXELL LTD0 citations63
US12235444B2Feb 25, 2025
Linked display system and head-mounted display
MAXELL LTD0 citations62
US11852811B2Dec 26, 2023
Linked display system and head-mounted display
MAXELL LTD0 citations62
US12072284B2Aug 27, 2024
Terahertz wave detection device, terahertz wave detection method, and terahertz wave detection system
MAXELL LTD0 citations61
US12513277B2Dec 30, 2025
Head mounted display
MAXELL LTD0 citations52
US12327319B2Jun 10, 2025
Virtual reality sharing method and system
MAXELL LTD0 citations52
US12321524B2Jun 3, 2025
Head-mounted display
MAXELL LTD0 citations52
US12081910B2Sep 3, 2024
Information device and camera image sharing system
MAXELL LTD0 citations52
US12294814B2May 6, 2025
Watching monitoring device and watching monitoring method
MAXELL LTD0 citations50
HITACHI AMERICA LTD
6 patentsUS5687275ANov 11, 1997
Trick play data indentification methods and apparatus for use with digital video recording and playback devices
HITACHI AMERICA LTD104 citations98
US6141486AOct 31, 2000
Methods and apparatus for recording digital data including sync block and track number information for use during trick play operation
HITACHI AMERICA LTD81 citations96
US5729649AMar 17, 1998
Methods and apparatus for recording data on a digital storage medium in a manner that facilitates the reading back of data during trick play operation
HITACHI AMERICA LTD64 citations96
US5623344AApr 22, 1997
Digital video recording device with trick play capability
HITACHI AMERICA LTD50 citations96
US5933567AAug 3, 1999
Method 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 tape
HITACHI AMERICA LTD36 citations92
US5583650ADec 10, 1996
Digital recording and playback device error correction methods and apparatus for use with trick play data
HITACHI AMERICA LTD35 citations92
SANYO ELECTRIC CO
1 patentShowing the top 50 of 54 patents by PatentIndex Score.