Inventor · disambiguated record
Masato Nagasawa
Also filed as: NAGASAWA MASATO
62 granted patents·4 pending applications·1,370 citations·filing 1989–2022
99Inventor score
Top patents by PatentIndex Score
66 records- 0196US5933410AOptical disc and optical disc driving apparatusMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 3, 1999·149 cites·5 claims
- 0296US5923640AOptical disc with a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jul 13, 1999·123 cites·18 claims
- 0395US6147961AOptical disk and optical disk drive deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Nov 14, 2000·53 cites·1 claims
- 0492US5867474AOptical disk having a continuous information track formed of alterating land/groove revolutions and optical disk driveMITSUBISHI ELECTRIC CORP·Filed 1996·Granted Feb 2, 1999·52 cites·27 claims
- 0592US5848050AOptical disk having a continuous recording track formed of alternating land and groove revolutionsMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Dec 8, 1998·91 cites·14 claims
- 0692US5754506AOptical disk drive and optical disk having address pits for sectors in land and groove tracksMITSUBISHI ELECTRIC CORP·Filed 1996·Granted May 19, 1998·76 cites·15 claims
- 0791US6493306B2Optical disk, optical disk drive apparatus, and optical disk tracking methodMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Dec 10, 2002·23 cites·4 claims
- 0891US6091699AOptical disk format having a continuous recording area formed of alternating land and groove revolutions, optical disk drive apparatus, and optical disk tracking methodMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Jul 18, 2000·49 cites·14 claims
- 0990US6009236ADigital video signal record and playback device and method for giving priority to a center of an I frameMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Dec 28, 1999·92 cites·4 claims
- 1088US5838658AOptical discMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Nov 17, 1998·58 cites·4 claims
- 1187US6334021B1Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Dec 25, 2001·14 cites·13 claims
- 1286US5809201ASpecially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Sep 15, 1998·57 cites·9 claims
- 1384US9167227B2Stereoscopic video recording method, stereoscopic video recording medium, stereoscopic video reproducing method, stereoscopic video recording apparatus, and stereoscopic video reproducing apparatusMITSUBISHI ELECTRIC CORP·Filed 2014·Granted Oct 20, 2015·3 cites·3 claims
- 1484US5699342AMethod of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laserMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Dec 16, 1997·48 cites·20 claims
- 1583US5892740AOptical disk drive and optical disk having address pits for sectors in land and groove tracksMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Apr 6, 1999·38 cites·2 claims
- 1683US5384676AMagnetic head position controller in a magnetic recording and reproducing apparatusMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Jan 24, 1995·34 cites·47 claims
- 1782US8677436B2Stereoscopic video distribution system, stereoscopic video distribution method, stereoscopic video distribution apparatus, stereoscopic video viewing system, stereoscopic video viewing method, and stereoscopic video viewing apparatusNAGASAWA MASATO·Filed 2010·Granted Mar 18, 2014·6 cites·45 claims
- 1882US6275466B1Optical disk and optical disk drive deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Aug 14, 2001·11 cites·10 claims
- 1981US6549717B2Digital video signal record and playback device and method for giving priority to a center of an I frameMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Apr 15, 2003·14 cites·4 claims
- 2080US7212728B2Disk media, and method of and device for recording and playing back information on or from a disk mediaMITSUBISHI ELECTRIC CORP·Filed 2004·Granted May 1, 2007·10 cites·5 claims
- 2180US6396798B1Optical disc with a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted May 28, 2002·27 cites·10 claims
- 2279US7343083B2Digital video signal record and playback device and method for selectively reproducing desired video information from an optical diskMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Mar 11, 2008·12 cites·8 claims
- 2378US7406249B2Disk media, and method of and device for recording and playing back information on or from a disk mediaMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Jul 29, 2008·9 cites·8 claims
- 2478US5936932AOptical recording medium having ID part shifting from the center of groove tracksMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 10, 1999·24 cites·10 claims
- 2578US5602688AMethod and apparatus for controlling surface pressure exerted on a movable magnetic head by a recording mediumMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Feb 11, 1997·24 cites·26 claims
- 2678US5481417ATape tension control for a magnetic recording and reproducing apparatus that adjusts spacing error based on the reproduced signal envelopeMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Jan 2, 1996·20 cites·31 claims
- 2777US7340150B2Digital video signal record and playback device and method for selectively reproducing desired video information from an optical diskMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Mar 4, 2008·10 cites·15 claims
- 2876US7593623B2Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2005·Granted Sep 22, 2009·2 cites·5 claims
- 2974US6842578B2Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2003·Granted Jan 11, 2005·5 cites·16 claims
- 3074US5566378AMovable head position controlling device for magnetic recording and reproducing apparatusesMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Oct 15, 1996·19 cites·21 claims
- 3174US5404252AMovable head position controlling device for magnetic recording and reproducing apparatusesMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Apr 4, 1995·19 cites·38 claims
- 3273US6771884B2Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Aug 3, 2004·5 cites·10 claims
- 3373US6539164B2Disk media, and method of and device for playing back information on or from a disk mediaMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Mar 25, 2003·18 cites·36 claims
- 3472US9179123B2Stereoscopic video recording method, stereoscopic video recording medium, stereoscopic video reproducing method, stereoscopic video recording apparatus, stereoscopic video reproducing apparatusNAGASAWA MASATO·Filed 2012·Granted Nov 3, 2015·1 cites·3 claims
- 3572US6868052B2Optical disc playback apparatus and method of judging disc typeMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Mar 15, 2005·14 cites·21 claims
- 3672US6167190ASpecially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Dec 26, 2000·13 cites·19 claims
- 3772US5859820AOptical disk drive and optical disk having a continuous information track formed of alternating land and groove revolutionsMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Jan 12, 1999·24 cites·11 claims
- 3870US6069869AOptical disk and optical disk drive deviceMITSUBISHI ELECTRIC CORP·Filed 1998·Granted May 30, 2000·14 cites·4 claims
- 3969US9191645B2Stereoscopic video and audio recording method, stereoscopic video and audio reproducing method, stereoscopic video and audio recording apparatus, stereoscopic video and audio reproducing apparatus, and stereoscopic video and audio recording mediumNAGASAWA MASATO·Filed 2010·Granted Nov 17, 2015·2 cites·11 claims
- 4069US6134382ADigital video signal record and playback device and method for giving priority to a center of an I frameMITSUBISHI ELECTRIC CORP·Filed 1999·Granted Oct 17, 2000·25 cites·6 claims
- 4168US10951876B2Stereoscopic video reproducing method, stereoscopic video reproducing apparatus and optical discMITSUBISHI ELECTRIC CORP·Filed 2019·Granted Mar 16, 2021·0 cites·3 claims
- 4268US6396799B1Optical disk drive device using an optical disk having a continuous information track formed of alternating land/groove revolutionsMITSUBISHI ELECTRIC CORP·Filed 2000·Granted May 28, 2002·4 cites·8 claims
- 4368US5157563AMagnetic recording and reproducing apparatus using an electromagnetic actuator for automatic trackingMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Oct 20, 1992·15 cites·7 claims
- 4467US6236637B1Optical disk and optical disk drive deviceMITSUBISHI ELECTRIC CORP·Filed 2000·Granted May 22, 2001·4 cites·1 claims
- 4566US5946285AOptical disk having a continuous information track formed of alternating land and groove track revolutions and a method of tracking the optical diskMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 31, 1999·19 cites·11 claims
- 4665US5395066ATape tension control for a magnetic recording and reproducing apparatusMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Mar 7, 1995·12 cites·4 claims
- 4763US10382741B2Stereoscopic video recording method, stereoscopic video recording medium, stereoscopic video reproducing method, stereoscopic video recording apparatus, and stereoscopic video reproducing apparatusMITSUBISHI ELECTRIC CORP·Filed 2017·Granted Aug 13, 2019·0 cites·3 claims
- 4863US8471680B2Turntable for display unit and control method thereforNAGASAWA MASATO·Filed 2009·Granted Jun 25, 2013·2 cites·17 claims
- 4963US7457518B2Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Nov 25, 2008·2 cites·7 claims
- 5062US6826353B2Specially formatted optical disk and method of playbackMITSUBISHI ELECTRIC CORP·Filed 2003·Granted Nov 30, 2004·2 cites·5 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →