Inventor · disambiguated record
Hideyuki Yamakawa
Also filed as: YAMAKAWA HIDEYUKI
17 granted patents·25 pending applications·195 citations·filing 1994–2024
93Inventor score
Top patents by PatentIndex Score
42 records- 0184US6791776B2Apparatus for information recording and reproducingHITACHI LTD·Filed 2001·Granted Sep 14, 2004·18 cites·8 claims
- 0283US5844741ASystem for reproducing high-density magnetic record data with viterbi detector for generating quadripartite reproduction dataHITACHI LTD·Filed 1995·Granted Dec 1, 1998·40 cites·18 claims
- 0382US6980385B2Apparatus for information recording and reproducingHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 27, 2005·15 cites·12 claims
- 0472US5625632AMagnetic disk drive including a data discrimination apparatus capable of correcting signal waveform distortion due to intersymbol interferenceHITACHI LTD·Filed 1994·Granted Apr 29, 1997·21 cites·17 claims
- 0572US2025108591A1Multilayer film and packaging filmTOPPAN HOLDINGS INC·Filed 2024·Application pending·0 cites
- 0671US5940416ADigital signal decoding apparatus and a decoding method used thereinHITACHI LTD·Filed 1997·Granted Aug 17, 1999·32 cites·9 claims
- 0770US7786667B2Organic electroluminescent element comprising a luminescent assist layerTOPPAN PRINTING CO LTD·Filed 2006·Granted Aug 31, 2010·5 cites·9 claims
- 0868US6812868B2Run length limited code generation method, run length limited code recording/reproducing apparatus, and run length limited code recording/reproduction methodTOSHIBA KK·Filed 2003·Granted Nov 2, 2004·6 cites·13 claims
- 0967US7370266B2Digital signal decoding device and digital signal decoding methodTOSHIBA KK·Filed 2003·Granted May 6, 2008·6 cites·5 claims
- 1065US8194518B2Optical disc device and optical disc playback methodYAMAKAWA HIDEYUKI·Filed 2011·Granted Jun 5, 2012·2 cites·8 claims
- 1165US5448424AAGC circuit and recording and reproducing apparatus using AGC circuitHITACHI LTD·Filed 1994·Granted Sep 5, 1995·21 cites·8 claims
- 1262US2009296553A1Optical disc device and optical disc playback methodTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1358US5553104AInformation recording/reproducing apparatus having a clock timing extraction circuit for extracting a clock signal from an input data signalHITACHI LTD·Filed 1994·Granted Sep 3, 1996·20 cites·12 claims
- 1457US7379408B2Disk apparatus and method using plural tap coefficient equalizationTOSHIBA KK·Filed 2004·Granted May 27, 2008·3 cites·18 claims
- 1553US7535811B2Disk device and disk reproduction method that prevents a wrong reproducing operation when a defect on the disk is determinedTOSHIBA KK·Filed 2004·Granted May 19, 2009·2 cites·2 claims
- 1653US7397751B2Optical disk apparatus, method of recording information, and information recording mediumTOSHIBA KK·Filed 2004·Granted Jul 8, 2008·2 cites·9 claims
- 1752US2009141605A1Optical disc reproducing device and optical disc reproducing methodTOSHIBA KK·Filed 2008·Application pending·0 cites
- 1851US2008285406A1Optical disc apparatus and optical disc reproduction methodTOSHIBA KK·Filed 2008·Application pending·0 cites
- 1950US2008151716A1Optical disc recording and reproducing apparatus and optical disc recording and reproducing methodTOSHIBA KK·Filed 2007·Application pending·0 cites
- 2050US2008152318A1Optical-disc recording/playback apparatus and optical-disc recording/playback methodTOSHIBA KK·Filed 2007·Application pending·0 cites
- 2149US2008151726A1Optical disc recording and reproducing apparatus and optical disc recording and reproducing methodTOSHIBA KK·Filed 2007·Application pending·0 cites
- 2249US2008019249A1Apparatus for reproducing data on recording medium and method for reproducing data on the mediumTOSHIBA CORP·Filed 2007·Application pending·0 cites
- 2348US2007086301A1Disk evaluating device and disk evaluating methodTOSHIBA KK·Filed 2006·Application pending·0 cites
- 2446US7403463B2Method and apparatus for filtering read signal to three or more cutoff frequencies with two or more bits control line throughout three or more consecutive periodsTOSHIBA KK·Filed 2004·Granted Jul 22, 2008·0 cites·8 claims
- 2546US2007025213A1Information reproducing apparatus and information reproducing methodTOSHIBA KK·Filed 2006·Application pending·0 cites
- 2646US2007177479A1Information reproducing apparatus and information reproducing methodTOSHIBA KK·Filed 2006·Application pending·0 cites
- 2745US2014244894A1MicroprocessorTOSHIBA KK·Filed 2013·Application pending·0 cites
- 2845US2007025224A1Optical disk driveTATSUZAWA YUKIYASU·Filed 2006·Application pending·0 cites
- 2944US2005265185A1Optical disc apparatus and information playback methodKASHIHARA YUTAKA·Filed 2005·Application pending·0 cites
- 3044US2006092803A1Optical disk apparatus and optical disk reproduction methodTOSHIBA KK·Filed 2005·Application pending·0 cites
- 3144US2007025212A1Optical disk apparatus and optical disk reproducing methodTATSUZAWA YUKIYASU·Filed 2006·Application pending·0 cites
- 3244US2006092804A1Digital data reproducing apparatus and methodOTAKE KOICHI·Filed 2005·Application pending·0 cites
- 3344US2006023604A1Signal processing apparatus and method for recording mediumTOSHIBA KK·Filed 2005·Application pending·0 cites
- 3444US2006092824A1Information recording medium, information playback method, and information recording methodTOSHIBA KK·Filed 2005·Application pending·0 cites
- 3542US2005185559A1Optical disk device, reproduction method of information on optical disk, and optical diskTOSHIBA KK·Filed 2005·Application pending·0 cites
- 3642US2005105440A1Disk apparatus and disk reproducing methodTOSHIBA KK·Filed 2004·Application pending·0 cites
- 3741US6975252B2Disk apparatus and disk reproducing methodTOSHIBA KK·Filed 2004·Granted Dec 13, 2005·2 cites·7 claims
- 3841US2007030777A1Digital data reproducing deviceYAMAKAWA HIDEYUKI·Filed 2006·Application pending·0 cites
- 3940US2004085869A1Optical disk apparatusTOSHIBA KK·Filed 2003·Application pending·0 cites
- 4037US2008315958A1Phase-locked loop circuit, phase-locked loop control apparatus, and phase-locked loop control methodTOSHIBA KK·Filed 2008·Application pending·0 cites
- 4136US7466253B2Integrated circuit, self-test method for the integrated circuit, and optical disc apparatus including the integrated circuitTOSHIBA KK·Filed 2007·Granted Dec 16, 2008·0 cites·11 claims
- 4235US2007087645A1Manufacturing method of a display deviceTSUJII AKIKO·Filed 2006·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →