Inventor · disambiguated record
Koichi Hirayama
Also filed as: HIRAYAMA KOICHI
65 granted patents·2 pending applications·2,149 citations·filing 1993–2010
99Inventor score
Files withTOSHIBA KK47MATSUSHITA ELECTRIC INDUSTRIAL CO LTD13TOKYO SHIBAURA ELECTRIC CO2HIRAYAMA KOICHI1JAPAN POLYPROPYLENE CORP1
Top patents by PatentIndex Score
67 records- 0197US5732185AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1996·Granted Mar 24, 1998·99 cites·4 claims
- 0297US5630006AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1993·Granted May 13, 1997·224 cites·39 claims
- 0396US6347145B2Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keysTOSHIBA KK·Filed 1997·Granted Feb 12, 2002·97 cites·23 claims
- 0496US6128434AMultilingual recording medium and reproduction apparatusTOSHIBA KK·Filed 1998·Granted Oct 3, 2000·136 cites·4 claims
- 0595US5715356AApparatus for processing compressed video signals which are be recorded on a disk or which have been reproduced from a diskTOSHIBA KK·Filed 1994·Granted Feb 3, 1998·217 cites·3 claims
- 0695US5675695AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1996·Granted Oct 7, 1997·65 cites·6 claims
- 0794US6671243B2Information storage medium, information recording method, and information reproduction methodTOSHIBA KK·Filed 2001·Granted Dec 30, 2003·45 cites·14 claims
- 0893US7003711B2Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector dataTOSHIBA KK·Filed 2002·Granted Feb 21, 2006·41 cites·14 claims
- 0993US5881037ARecording medium, recording method and apparatus, and reproduction method and apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Mar 9, 1999·77 cites·35 claims
- 1091US7401268B2Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector dataTOSHIBA KK·Filed 2006·Granted Jul 15, 2008·8 cites·20 claims
- 1190US5867475AOptical record carrier and method for recording and reproducing signals therefromMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 2, 1999·53 cites·29 claims
- 1290US5819003AMulti-scene recording medium having data units of program information items recorded alternatingly and continuously thereon, and apparatus for reproducing data therefromTOSHIBA KK·Filed 1996·Granted Oct 6, 1998·78 cites·33 claims
- 1389US5652824AMultilingual recording medium and reproducing apparatus with automatic selection of substitutes and languages based on frequency of selectionsTOKYO SHIBAURA ELECTRIC CO·Filed 1993·Granted Jul 29, 1997·87 cites·4 claims
- 1486US7406635B2Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector dataTOSHIBA KK·Filed 2006·Granted Jul 29, 2008·4 cites·20 claims
- 1584US7390575B2Propylene-ethylene random block copolymer and biaxially oriented multi-layer film using the same as a surface layerJAPAN POLYPROPYLENE CORP·Filed 2004·Granted Jun 24, 2008·24 cites·13 claims
- 1684US6785210B2Reproduction signal evaluation methodTOSHIBA KK·Filed 2001·Granted Aug 31, 2004·13 cites·20 claims
- 1784US5912869ARecording medium data transmission method and apparatus and data reproduction method and apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jun 15, 1999·43 cites·50 claims
- 1883US7433474B2Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keysTOSHIBA KK·Filed 2002·Granted Oct 7, 2008·13 cites·10 claims
- 1983US7134055B2Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector dataTOSHIBA KK·Filed 2005·Granted Nov 7, 2006·3 cites·21 claims
- 2082US5732066AOptical record carrier and method for recording and reproducing signals therefromMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Mar 24, 1998·32 cites·28 claims
- 2181US5793872AApparatus and method for reproducing data from a multi-scene recording medium having data units of program information items recorded alternatingly and continuously thereonTOSHIBA KK·Filed 1996·Granted Aug 11, 1998·40 cites·4 claims
- 2280US5917857ADigital modulation apparatus, a digital modulation method, and a recording medium thereforMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jun 29, 1999·35 cites·6 claims
- 2379US7404111B2Information recording medium on which sector data generated from ECC block is recorded, information recording apparatus for recording sector data, and information reproduction apparatus for reproducing sector dataTOSHIBA KK·Filed 2006·Granted Jul 22, 2008·2 cites·20 claims
- 2479US6009174ASecret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decodedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Dec 28, 1999·57 cites·14 claims
- 2579US5956457AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1997·Granted Sep 21, 1999·18 cites·44 claims
- 2679US5790569AMethod and apparatus for generating, recording and transmitting an error product code block having an improved check code arrangementTOSHIBA KK·Filed 1996·Granted Aug 4, 1998·41 cites·24 claims
- 2778US5778136AMulti-scene recording medium wherein related data segments of simultaneously proceeding scenes are recorded alternatingly and continuously thereonTOKYO SHIBAURA ELECTRIC CO·Filed 1996·Granted Jul 7, 1998·39 cites·6 claims
- 2877US5850500ARecording medium comprising a plurality of different languages which are selectable independently of each otherTOSHIBA KK·Filed 1997·Granted Dec 15, 1998·39 cites·4 claims
- 2977US5774078ASingle merging bit DC-suppressed run length limited codingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jun 30, 1998·43 cites·18 claims
- 3073US6034618ADevice authentication system which allows the authentication function to be changedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Mar 7, 2000·83 cites·28 claims
- 3171US5987066ADigital data transmitting methodTOSHIBA KK·Filed 1996·Granted Nov 16, 1999·60 cites·14 claims
- 3269US5978958AData transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting codeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 2, 1999·27 cites·7 claims
- 3368US5835669AMultilingual recording medium which comprises frequency of use data/history data and a plurality of menus which are stored in a still picture formatTOSHIBA KK·Filed 1997·Granted Nov 10, 1998·23 cites·14 claims
- 3465US5751892AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1996·Granted May 12, 1998·12 cites·8 claims
- 3562US5999695AMultilingual recording medium and reproduction apparatusTOSHIBA KK·Filed 1998·Granted Dec 7, 1999·10 cites·9 claims
- 3662US5911032AMulti-scene recording medium and apparatus for reproducing data therefromTOSHIBA KK·Filed 1996·Granted Jun 8, 1999·14 cites·16 claims
- 3762US2008279383A1Method and apparatus of enciphering and deciphering data using multiple keysTOSHIBA KK·Filed 2008·Application pending·0 cites
- 3861US6847600B2Method for estimating the quality of an information recording medium utilizing equalization signalsTOSHIBA KK·Filed 2001·Granted Jan 25, 2005·4 cites·6 claims
- 3961US6704259B2Information recording and reproducing apparatus and information recording and reproducing method, information reproducing apparatus and information reproducing method, and information recording mediumTOSHIBA KK·Filed 2001·Granted Mar 9, 2004·4 cites·14 claims
- 4060US7394740B2Reproduction signal evaluation methodTOSHIBA KK·Filed 2006·Granted Jul 1, 2008·0 cites·3 claims
- 4160US7327657B2Reproduction signal evaluation methodTOSHIBA KK·Filed 2006·Granted Feb 5, 2008·0 cites·3 claims
- 4260US6028979AMultilingual recording medium and reproduction apparatusTOSHIBA KK·Filed 1998·Granted Feb 22, 2000·16 cites·8 claims
- 4359US6397366B1Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting codeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted May 28, 2002·34 cites·6 claims
- 4459US6182263B1Apparatus for generating, recording and transmitting an error product code block having an improved check code arrangementTOSHIBA KK·Filed 1998·Granted Jan 30, 2001·12 cites·1 claims
- 4559US5845046AMulti-scene recording medium and apparatus for producing data therefromTOSHIBA KK·Filed 1996·Granted Dec 1, 1998·9 cites·8 claims
- 4657US6049611AOne-way data conversion apparatus and device authentication systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Apr 11, 2000·35 cites·25 claims
- 4755US7106677B2Reproduction signal evaluation methodTOSHIBA KK·Filed 2004·Granted Sep 12, 2006·1 cites·6 claims
- 4855US5835670AMultilingual recording medium and reproduction apparatusTOSHIBA KK·Filed 1997·Granted Nov 10, 1998·19 cites·37 claims
- 4953US5832175AApparatus and method for reproducing, based on parental consent, data from a multi-scene recording medium having data units of program information items alternatingly and continuously recorded thereonTOSHIBA KK·Filed 1996·Granted Nov 3, 1998·9 cites·8 claims
- 5052US6160890ASecret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decodedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 12, 2000·24 cites·19 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →