Inventor · disambiguated record
Shunji Ohara
Also filed as: O'HARA SHUNJI · OHARA SHUNJI
69 granted patents·21 pending applications·2,644 citations·filing 1981–2019
99Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD61SEKISUI CHEMICAL CO LTD21MITSUBISHI ELECTRIC CORP2OHMORI MOTOJI2NAGAI TAKAHIRO1
Top patents by PatentIndex Score
90 records- 0198US6938162B1Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Aug 30, 2005·278 cites·28 claims
- 0297US6418111B1Optical disk compatible with read-only disk and having read-only and rewritable areas with overlapping formatsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jul 9, 2002·73 cites·2 claims
- 0397US6134214AMethod for substituting defective recording of discoid recording medium and discoid recording medium recording and reproducing deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Oct 17, 2000·82 cites·4 claims
- 0497US6078559AOptical disk having read-only and rewritable areas with overlapping formatsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jun 20, 2000·114 cites·3 claims
- 0597US5850382AOptical disk having a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Dec 15, 1998·181 cites·22 claims
- 0697US5140580AOptical disk apparatus operative with optimal recording power settingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Aug 18, 1992·110 cites·12 claims
- 0796US6469980B1Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit dataMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 22, 2002·48 cites·4 claims
- 0896US6314078B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 6, 2001·40 cites·5 claims
- 0996US5933410AOptical disc and optical disc driving apparatusMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Aug 3, 1999·149 cites·5 claims
- 1096US5923640AOptical disc with a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jul 13, 1999·123 cites·18 claims
- 1196US4535439AOptical having index mark and sector markMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Aug 13, 1985·54 cites·4 claims
- 1295US6301220B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 9, 2001·32 cites·22 claims
- 1395US5729525ATwo-layer optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Mar 17, 1998·96 cites·15 claims
- 1495US5119363AOptical disk having an index markMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Jun 2, 1992·52 cites·25 claims
- 1595US4929823AOptical pickup head with holographic servo signal detection using a spot size detection systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1988·Granted May 29, 1990·65 cites·16 claims
- 1694US6351447B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 26, 2002·29 cites·2 claims
- 1794US4566088AOptical and reversible recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Jan 21, 1986·45 cites·5 claims
- 1894US4545044AMethod and apparatus for optically recording and reproducing informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Oct 1, 1985·49 cites·14 claims
- 1994US4509156ASemiconductor laser driving systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Apr 2, 1985·49 cites·4 claims
- 2093US6549499B2Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Apr 15, 2003·24 cites·14 claims
- 2192US6683834B2Information recording method, information recording/reproducing apparatus, and information recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jan 27, 2004·22 cites·15 claims
- 2292US6496455B1Recording defect substitution method for a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 17, 2002·21 cites·7 claims
- 2392US5544137AOptical disc record/playback apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Aug 6, 1996·59 cites·23 claims
- 2491US6317407B1Optical disk having read-only and rewritable areas with overlapping formatsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 13, 2001·23 cites·14 claims
- 2591US5898654AOptical disk and optical disk apparatus having a predetermined pattern of marks on tracks such that a reproduced signal is caused to jitterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Apr 27, 1999·72 cites·3 claims
- 2691US5872767AOptical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracksMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Feb 16, 1999·59 cites·11 claims
- 2791US4564931AOptical recording and reproducing headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1983·Granted Jan 14, 1986·34 cites·8 claims
- 2890US5930225ATwo-layer optical diskMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jul 27, 1999·55 cites·15 claims
- 2990US4546462AOptical data recording and reproducing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Oct 8, 1985·37 cites·11 claims
- 3089US5862112AOptical disk and an optical disk recording reproduction deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Jan 19, 1999·49 cites·6 claims
- 3188US5838658AOptical discMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Nov 17, 1998·58 cites·4 claims
- 3287US4700336AOptical recording and playback apparatus using plural light spotsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Oct 13, 1987·37 cites·21 claims
- 3386US6735158B1Multilayer optical disk, and method and device for recording optical information thereonMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted May 11, 2004·24 cites·9 claims
- 3486US6606294B2Optical disk having read-only and rewritable areasMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 12, 2003·14 cites·1 claims
- 3585US7698743B2Authentication server, method and system for detecting unauthorized terminalPANASONIC CORP·Filed 2004·Granted Apr 13, 2010·44 cites·8 claims
- 3684US5809007AOptical disk and optical disk reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Sep 15, 1998·42 cites·15 claims
- 3781US4724533AOptical headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Feb 9, 1988·26 cites·20 claims
- 3880US6396798B1Optical disc with a rewritable area and a read-only areaMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted May 28, 2002·27 cites·10 claims
- 3980US6167022AOptical disc having oscillating land and groovesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 26, 2000·26 cites·2 claims
- 4080US5128911AOptical disc reproducing apparatus having an automatic gain control circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Jul 7, 1992·29 cites·2 claims
- 4179US6172960B1Optical disk and recording/reproducing apparatus using multiple address block groups shifted oppositely with multiple address blocksMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jan 9, 2001·22 cites·2 claims
- 4276US6175549B1Recording defect substitution method of a disc-shaped recording medium, and a recording and reproducing apparatus for a disc-shaped recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jan 16, 2001·15 cites·3 claims
- 4374US5375111AOptical information recording medium, and audio and video information recording methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Dec 20, 1994·23 cites·7 claims
- 4471US6906988B1Method and apparatus for recording/reproducing information with respect to optical recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jun 14, 2005·7 cites·14 claims
- 4570US4689780AOptical recording and reproducing headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Aug 25, 1987·14 cites·17 claims
- 4669US4759006AAbnormal track skipping detection and control arrangementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Jul 19, 1988·16 cites·2 claims
- 4768US6373815B1Optical disc having oscillating lands and groovesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Apr 16, 2002·15 cites·1 claims
- 4868US6097683AInformation recording/reproducing apparatus and a method of recording information onto an information recording/reproducing media having a plurality of storage medium types and recording modesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Aug 1, 2000·12 cites·11 claims
- 4968US4679184AOptical recording and reproducing apparatus having erasing beam spot with asymmetrical intensity distributionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Jul 7, 1987·15 cites·10 claims
- 5064US6396778B2Optical disk and a recording/reproduction apparatus thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted May 28, 2002·3 cites·1 claims
Showing the top 50 of 90 patent records by PatentIndex Score.
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