Inventor
OUCHI YASUHIDE
JP25 patents
⚠️ This page may combine multiple inventors who share the name “OUCHI YASUHIDE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
24 patentsUS5848045ADec 8, 1998
Method for recording and reading an optical disk
HITACHI LTD70 citations96
US5766718AJun 16, 1998
Longitudinal magnetic recording medium and apparatus
HITACHI LTD70 citations96
US5418660AMay 23, 1995
Information processing apparatus for processing reproduction signal having nonlinear characteristics
HITACHI LTD58 citations96
US5703855ADec 30, 1997
Optical disk apparatus and recording and reading method for an optical disk using the same
HITACHI LTD61 citations95
US5572503ANov 5, 1996
Correcting non-linear distortions of optical information with a non-linear equalizer
HITACHI LTD32 citations93
US6496316B1Dec 17, 2002
Magnetic recording and reproduction apparatus
HITACHI LTD22 citations92
US6046873AApr 4, 2000
Magnetic recording and reproducing apparatus including a viterbi detector having a variable reference amplitude value
HITACHI LTD17 citations92
US5818655AOct 6, 1998
Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit
HITACHI LTD30 citations92
US5572699ANov 5, 1996
Variable length data in a parallel disk array
HITACHI LTD33 citations92
US5400189AMar 21, 1995
Magnetic recording and reproducing apparatus, reproduction signal processing apparatus, and reproduction signal processing method
HITACHI LTD33 citations92
US5287228AFeb 15, 1994
Peak detection method and apparatus therefor
HITACHI LTD36 citations92
US4907100AMar 6, 1990
Readout circuit in magnetic recording device
HITACHI LTD24 citations91
US6661594B2Dec 9, 2003
Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit
HITACHI LTD14 citations83
US5392316AFeb 21, 1995
Decoding method and apparatus with maximum likelihood sequence estimation
HITACHI LTD16 citations82
US4774601ASep 27, 1988
Read channel for magnetic recording
HITACHI LTD21 citations82
US5659309AAug 19, 1997
Data recording/reproducing apparatus having viterbi decoder and method thereof
HITACHI LTD9 citations74
US5568330AOct 22, 1996
Recording/reproducing apparatus with maximum likelihood sequence estimation
HITACHI LTD11 citations74
US5325364AJun 28, 1994
Method for error correction and circuit for realizing same
HITACHI LTD9 citations74
US5008761AApr 16, 1991
Readout circuit in magnetic recording device
HITACHI LTD10 citations74
US4644424AFeb 17, 1987
Equalizer used for magnetic storage device
HITACHI LTD7 citations74
US6175460B1Jan 16, 2001
Magnetic recording and reproduction apparatus
HITACHI LTD6 citations73
US5467232ANov 14, 1995
Magnetic recording and reproducing method using phase discrimination and apparatus therefor
HITACHI LTD4 citations63
US4823208AApr 18, 1989
Multi slice level signal circuit
HITACHI LTD5 citations62
US4651236AMar 17, 1987
Waveform equalizing circuit
HITACHI LTD4 citations60