Inventor · disambiguated record
Tetsuji Kawashima
Also filed as: KAWASHIMA TETSUJI
36 granted patents·1 pending application·547 citations·filing 1989–2010
97Inventor score
Top patents by PatentIndex Score
37 records- 0197US5805932ASystem for transmitting compressed data if compression ratio is at least preset ratio and pre-compressed data if compression ratio is less than preset ratioSONY CORP·Filed 1995·Granted Sep 8, 1998·149 cites·30 claims
- 0294US6904008B2Recording apparatus and recording methodSONY CORP·Filed 2001·Granted Jun 7, 2005·32 cites·21 claims
- 0390US6704262B2Optical disc and optical disc apparatus for identifying synchronization patterns thereofSONY CORP·Filed 2000·Granted Mar 9, 2004·30 cites·17 claims
- 0490US6519217B1Data record medium, data recording and/or reproducing apparatus, and record medium determining methodSONY CORP·Filed 2000·Granted Feb 11, 2003·32 cites·17 claims
- 0589US6992960B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Jan 31, 2006·6 cites·1 claims
- 0686US6917574B2Data recording and reproducing apparatus and method for linking data using a decreased number of data linking blocksSONY CORP·Filed 2001·Granted Jul 12, 2005·21 cites·17 claims
- 0786US6636461B2Recording and/or reproducing method and apparatus having reciprocal time domain to binary conversion meansSONY CORP·Filed 2001·Granted Oct 21, 2003·22 cites·14 claims
- 0884US7423952B2Recording medium, recording apparatus and recording methodSONY CORP·Filed 2004·Granted Sep 9, 2008·15 cites·12 claims
- 0984US5894588AData transmitting apparatus, data recording apparatus, data transmitting method, and data recording methodSONY CORP·Filed 1997·Granted Apr 13, 1999·49 cites·22 claims
- 1078US6438084B2Data recording apparatus and method, data playback apparatus and method, and optical discSONY CORP·Filed 2001·Granted Aug 20, 2002·13 cites·33 claims
- 1177US6693855B2Optical disc and optical disc apparatusSONY CORP·Filed 2001·Granted Feb 17, 2004·13 cites·2 claims
- 1275US7000171B2Recorded medium reproducing device and method, data output controlling method, data outputting method, error detecting method, and data outputting reproducing methodSONY CORP·Filed 2001·Granted Feb 14, 2006·10 cites·56 claims
- 1374US6990054B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Jan 24, 2006·1 cites·1 claims
- 1473US6041029ADisc apparatusSONY CORP·Filed 1998·Granted Mar 21, 2000·25 cites·10 claims
- 1573US5237554AApparatus for generating clock signals for data reproductionSONY CORP·Filed 1990·Granted Aug 17, 1993·21 cites·17 claims
- 1671US5495455AMagneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired positionSONY CORP·Filed 1993·Granted Feb 27, 1996·20 cites·2 claims
- 1770US6765851B2Optical disc, data-recording apparatus and data-recording methodSONY CORP·Filed 2001·Granted Jul 20, 2004·8 cites·26 claims
- 1869US5189650AMagneto-optical signal reproducing apparatus in which reproduced magneto-optical signal level is compared with reference signal level varied in accordance with in-phase signalSONY CORP·Filed 1990·Granted Feb 23, 1993·18 cites·7 claims
- 1965US5684772AMagneto-optical disc recording and reproducing system with level clampingSONY CORP·Filed 1995·Granted Nov 4, 1997·18 cites·6 claims
- 2062US7286461B2Optical disk driving apparatus and method, and recording medium and program used therewithSONY CORP·Filed 2004·Granted Oct 23, 2007·4 cites·4 claims
- 2162US5182734AMagneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristicsSONY CORP·Filed 1989·Granted Jan 26, 1993·12 cites·9 claims
- 2261US2008292829A1Recording medium, recording apparatus and recording methodSONY CORP·Filed 2008·Application pending·0 cites
- 2357US7319650B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Jan 15, 2008·0 cites·1 claims
- 2457US7319651B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Jan 15, 2008·0 cites·1 claims
- 2557US7319649B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Jan 15, 2008·0 cites·1 claims
- 2657US7113466B2Recording apparatus and recording methodSONY CORP·Filed 2005·Granted Sep 26, 2006·0 cites·1 claims
- 2756US6717894B2Optical disc recording method and recording and/or reproducing apparatus operable to accommodate multiple disc formatsSONY CORP·Filed 2003·Granted Apr 6, 2004·2 cites·4 claims
- 2856US6621776B2Optical disc recording method and recording and/or reproducing apparatusSONY CORP·Filed 2001·Granted Sep 16, 2003·2 cites·8 claims
- 2954US6567018B2Data recording medium, contents data, recording medium, data recording method and apparatus, and data reproducing method and apparatusSONY CORP·Filed 2001·Granted May 20, 2003·2 cites·98 claims
- 3052US6339580B1Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk driveSONY CORP·Filed 1999·Granted Jan 15, 2002·8 cites·3 claims
- 3151US7940636B2Recording medium, recording apparatus and recording methodSONY CORP·Filed 2010·Granted May 10, 2011·0 cites·8 claims
- 3248US5970026ATemperature invariant, magneto-optic modulator coil driving circuitSONY CORP·Filed 1993·Granted Oct 19, 1999·7 cites·5 claims
- 3344US7177251B2Recording method, recording apparatus, reproduction method and reproduction apparatus for recording and reproducing data in which additional information is buried in contents dataSONY CORP·Filed 2002·Granted Feb 13, 2007·0 cites·16 claims
- 3439US8213284B2Multi-layered rewritable optical disc recording apparatus and recording methodKAWASHIMA TETSUJI·Filed 2006·Granted Jul 3, 2012·0 cites·8 claims
- 3539US6353585B1Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk driveSONY CORP·Filed 1997·Granted Mar 5, 2002·3 cites·10 claims
- 3639US6014096AData decoding method and deviceSONY CORP·Filed 1997·Granted Jan 11, 2000·4 cites·224 claims
- 3735US6819642B2Data recording device, data reproducing device, and optical discSONY CORP·Filed 2001·Granted Nov 16, 2004·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →