Inventor · disambiguated record
Toshifumi Takeuchi
Also filed as: TAKEUCHI TOSHIFUMI
105 granted patents·18 pending applications·2,146 citations·filing 1989–2024
99Inventor score
Top patents by PatentIndex Score
123 records- 0199US6009237AOptical disk and optical disk reproduction apparatusHITACHI LTD·Filed 1997·Granted Dec 28, 1999·333 cites·6 claims
- 0296US6490236B1Method and apparatus for optical disk deviceHITACHI LTD·Filed 2000·Granted Dec 3, 2002·79 cites·11 claims
- 0394US7778294B2Optical disk apparatus and information recording methodHITACHI LTD·Filed 2006·Granted Aug 17, 2010·15 cites·14 claims
- 0494US6002834AOptical disk having table relating sector address and time and optical disk reproducing apparatusHITACHI LTD·Filed 1998·Granted Dec 14, 1999·145 cites·11 claims
- 0593US6804453B1Digital signal recording/reproducing apparatusHITACHI LTD·Filed 2000·Granted Oct 12, 2004·52 cites·18 claims
- 0693US5343455ADigital signal overlapped or joined recording method and apparatusHITACHI LTD·Filed 1991·Granted Aug 30, 1994·70 cites·18 claims
- 0791US6674858B1Receiving device, recording and reproducing device and receiving/recording-reproducing system for digital broadcast signalHITACHI LTD·Filed 1998·Granted Jan 6, 2004·134 cites·5 claims
- 0889US5966721ADigital signal recording method and disk reproducing apparatusHITACHI LTD·Filed 1996·Granted Oct 12, 1999·37 cites·16 claims
- 0989US5768298AInformation recording method, reproducing method and reproducing apparatusHITACHI LTD·Filed 1996·Granted Jun 16, 1998·40 cites·22 claims
- 1088US6785207B2Wobble signal reproducing circuitHITACHI LTD·Filed 2001·Granted Aug 31, 2004·25 cites·6 claims
- 1187US7133335B2Wobble signal reproducing circuitHITACHI LTD·Filed 2004·Granted Nov 7, 2006·21 cites·3 claims
- 1286US5528574ADisk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocityHITACHI LTD·Filed 1994·Granted Jun 18, 1996·38 cites·8 claims
- 1385US7779256B2Reproducing apparatus, recording apparatus and display apparatusHITACHI LTD·Filed 2008·Granted Aug 17, 2010·3 cites·3 claims
- 1485US6549579B2Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI LTD·Filed 2002·Granted Apr 15, 2003·10 cites·12 claims
- 1585US6535614B1Method and apparatus for recording and reproducing electronic watermark information, and recording mediumHITACHI LTD·Filed 1998·Granted Mar 18, 2003·66 cites·2 claims
- 1685US6314542B1Information recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 2000·Granted Nov 6, 2001·13 cites·4 claims
- 1785US4961204APCM signal generating/reproducing apparatusHITACHI LTD·Filed 1989·Granted Oct 2, 1990·50 cites·24 claims
- 1884US6778757B1Data recording/reproduction apparatus and methodHITACHI LTD·Filed 1999·Granted Aug 17, 2004·34 cites·5 claims
- 1984US6404781B1Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium thereforHITACHI LTD·Filed 1998·Granted Jun 11, 2002·59 cites·14 claims
- 2084US6181664B1Disk cartridge and disk device using the sameHITACHI LTD·Filed 2000·Granted Jan 30, 2001·13 cites·3 claims
- 2184US5247396APCM signal recording method and apparatus for recording four-channel data to be compatible with two-channel dataHITACHI LTD·Filed 1989·Granted Sep 21, 1993·29 cites·22 claims
- 2283US6754442B1Method and apparatus for recording/reproducing digital video signal or audio signal, and optical disk apparatusHITACHI LTD·Filed 2000·Granted Jun 22, 2004·13 cites·12 claims
- 2382US6578149B1Method for reproducing data, apparatus for reproducing data, method for coding data, method for recording data, apparatus for recording and reproducing data, method for authentication, semiconductor chip, reproducing apparatus, recording apparatus and data processing apparatusHITACHI LTD·Filed 1999·Granted Jun 10, 2003·45 cites·38 claims
- 2481US6192013B1Disk reproducing apparatus controlling read signal from a disk by using demodulated identifying signal and stored identifying signal in a memoryHITACHI LTD·Filed 2000·Granted Feb 20, 2001·11 cites·3 claims
- 2580US6519351B2Method and apparatus for recording and reproducing electronic watermark information, and recording mediumHITACHI LTD·Filed 2001·Granted Feb 11, 2003·20 cites·7 claims
- 2680US5917857ADigital 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
- 2778US6076184AInformation recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 1999·Granted Jun 13, 2000·20 cites·4 claims
- 2876US5974581AInformation recording method, reproducing method, and reproducing apparatusHITACHI LTD·Filed 1997·Granted Oct 26, 1999·19 cites·5 claims
- 2976US5740144ADisk reproducing apparatusHITACHI LTD·Filed 1997·Granted Apr 14, 1998·21 cites·10 claims
- 3075US7043645B2Reproducing apparatus, recording apparatus and display apparatusHITACHI LTD·Filed 2003·Granted May 9, 2006·6 cites·26 claims
- 3175US6882728B1Reproduction apparatus and decoding apparatusHITACHI LTD·Filed 1999·Granted Apr 19, 2005·43 cites·12 claims
- 3275US6711276B1Control method and apparatus for embedding information in dataHITACHI LTD·Filed 1999·Granted Mar 23, 2004·57 cites·17 claims
- 3375US5589995AHeader information of information signal recording and reproducing method and apparatus thereforHITACHI LTD·Filed 1996·Granted Dec 31, 1996·19 cites·32 claims
- 3474US7174092B2Method and apparatus for recording/reproducing digital video signal or audio signal, and optical disk apparatusHITACHI LTD·Filed 2004·Granted Feb 6, 2007·7 cites·6 claims
- 3574US7019927B2Information signal recording and playback method and apparatus thereforHITACHI LTD·Filed 2003·Granted Mar 28, 2006·6 cites·9 claims
- 3672US7992246B2Radial vane for tooth brush, tooth brush using the same, and method and device for manufacturing the radial vane for the tooth brushHIGUCHI MANUFACTORY CO LTD·Filed 2005·Granted Aug 9, 2011·13 cites·5 claims
- 3772US6826291B2Method and system for embedding information into contentsHITACHI LTD·Filed 2002·Granted Nov 30, 2004·11 cites·7 claims
- 3872US2025003961A1Base material for manufacturing sensor for analyzing detection target, sensor for analyzing detection target, method for analyzing detection targetUNIV KOBE NAT UNIV CORP·Filed 2024·Application pending·0 cites
- 3971US5987066ADigital data transmitting methodTOSHIBA KK·Filed 1996·Granted Nov 16, 1999·60 cites·14 claims
- 4070US5706385ARotary head type magnetic recording and reproducing apparatusHITACHI LTD·Filed 1994·Granted Jan 6, 1998·30 cites·32 claims
- 4169US7620299B2Data recording device for recording data in basic recording unitsHITACHI LTD·Filed 2005·Granted Nov 17, 2009·2 cites·2 claims
- 4269US6690813B2Method and apparatus for recording and reproducing electronic watermark information, and recording mediumHITACHI LTD·Filed 2002·Granted Feb 10, 2004·6 cites·13 claims
- 4369US6434322B1Reproducing method and apparatus, for a video signal having copy control informationHITACHI LTD·Filed 1998·Granted Aug 13, 2002·45 cites·31 claims
- 4468US7821888B2Optical disk reproducing apparatus with a disk identifying functionHITACHI LTD·Filed 2007·Granted Oct 26, 2010·1 cites·5 claims
- 4568US6424477B1Information signal recording and playback method and apparatus thereforHITACHI LTD·Filed 1999·Granted Jul 23, 2002·13 cites·8 claims
- 4668US6308003B1Method of recording image data and method of reproducing information from optical diskHITACHI LTD·Filed 1999·Granted Oct 23, 2001·25 cites·4 claims
- 4768US6181660B1Digital signal processor circuit for reproduction of digital dataHITACHI LTD·Filed 1998·Granted Jan 30, 2001·21 cites·22 claims
- 4867US7379547B2Reproducing apparatus, recording apparatus and display apparatusHITACHI LTD·Filed 2003·Granted May 27, 2008·6 cites·33 claims
- 4967US7336786B2Reproduction apparatusHITACHI LTD·Filed 2004·Granted Feb 26, 2008·6 cites·12 claims
- 5067US6438172B1Transmitting and recording method, reproducing method, and reproducing apparatus of information and its recording mediumHITACHI LTD·Filed 1995·Granted Aug 20, 2002·19 cites·4 claims
Showing the top 50 of 123 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →