Inventor
KAWASHIMA TETSUJI
JP36 patents
⚠️ This page may combine multiple inventors who share the name “KAWASHIMA TETSUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
35 patentsUS5805932ASep 8, 1998
System for transmitting compressed data if compression ratio is at least preset ratio and pre-compressed data if compression ratio is less than preset ratio
SONY CORP149 citations99
US6904008B2Jun 7, 2005
Recording apparatus and recording method
SONY CORP32 citations96
US5894588AApr 13, 1999
Data transmitting apparatus, data recording apparatus, data transmitting method, and data recording method
SONY CORP49 citations96
US5495455AFeb 27, 1996
Magneto-optical disk recording and reading apparatus and method wherein the recording head is controlled in the radial direction of the disk to a desired position
SONY CORP20 citations93
US6917574B2Jul 12, 2005
Data recording and reproducing apparatus and method for linking data using a decreased number of data linking blocks
SONY CORP21 citations92
US6704262B2Mar 9, 2004
Optical disc and optical disc apparatus for identifying synchronization patterns thereof
SONY CORP30 citations92
US6636461B2Oct 21, 2003
Recording and/or reproducing method and apparatus having reciprocal time domain to binary conversion means
SONY CORP22 citations92
US6519217B1Feb 11, 2003
Data record medium, data recording and/or reproducing apparatus, and record medium determining method
SONY CORP32 citations92
US6041029AMar 21, 2000
Disc apparatus
SONY CORP25 citations92
US5237554AAug 17, 1993
Apparatus for generating clock signals for data reproduction
SONY CORP21 citations92
US5684772ANov 4, 1997
Magneto-optical disc recording and reproducing system with level clamping
SONY CORP18 citations84
US6693855B2Feb 17, 2004
Optical disc and optical disc apparatus
SONY CORP13 citations83
US7423952B2Sep 9, 2008
Recording medium, recording apparatus and recording method
SONY CORP15 citations82
US7000171B2Feb 14, 2006
Recorded medium reproducing device and method, data output controlling method, data outputting method, error detecting method, and data outputting reproducing method
SONY CORP10 citations74
US6992960B2Jan 31, 2006
Recording apparatus and recording method
SONY CORP6 citations74
US6438084B2Aug 20, 2002
Data recording apparatus and method, data playback apparatus and method, and optical disc
SONY CORP13 citations74
US6339580B1Jan 15, 2002
Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk drive
SONY CORP8 citations74
US5970026AOct 19, 1999
Temperature invariant, magneto-optic modulator coil driving circuit
SONY CORP7 citations74
US5189650AFeb 23, 1993
Magneto-optical signal reproducing apparatus in which reproduced magneto-optical signal level is compared with reference signal level varied in accordance with in-phase signal
SONY CORP18 citations74
US5182734AJan 26, 1993
Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
SONY CORP12 citations74
US6765851B2Jul 20, 2004
Optical disc, data-recording apparatus and data-recording method
SONY CORP8 citations72
US6990054B2Jan 24, 2006
Recording apparatus and recording method
SONY CORP1 citations63
US6717894B2Apr 6, 2004
Optical disc recording method and recording and/or reproducing apparatus operable to accommodate multiple disc formats
SONY CORP2 citations63
US6621776B2Sep 16, 2003
Optical disc recording method and recording and/or reproducing apparatus
SONY CORP2 citations63
US6567018B2May 20, 2003
Data recording medium, contents data, recording medium, data recording method and apparatus, and data reproducing method and apparatus
SONY CORP2 citations63
US6353585B1Mar 5, 2002
Apparatus and method of forming evaluation signal used in adjusting focus bias and adjusting skew of disk drive
SONY CORP3 citations63
US6014096AJan 11, 2000
Data decoding method and device
SONY CORP4 citations63
US7286461B2Oct 23, 2007
Optical disk driving apparatus and method, and recording medium and program used therewith
SONY CORP4 citations62
US7319650B2Jan 15, 2008
Recording apparatus and recording method
SONY CORP0 citations52
US7319649B2Jan 15, 2008
Recording apparatus and recording method
SONY CORP0 citations52
US7319651B2Jan 15, 2008
Recording apparatus and recording method
SONY CORP0 citations52
US7113466B2Sep 26, 2006
Recording apparatus and recording method
SONY CORP0 citations52
US7940636B2May 10, 2011
Recording medium, recording apparatus and recording method
SONY CORP0 citations50
US7177251B2Feb 13, 2007
Recording method, recording apparatus, reproduction method and reproduction apparatus for recording and reproducing data in which additional information is buried in contents data
SONY CORP0 citations42
US6819642B2Nov 16, 2004
Data recording device, data reproducing device, and optical disc
SONY CORP0 citations39