Inventor
Yasuhide Ouchi
Inventor
Odawara, JP
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer66%
H03MCoding9%
H04LTransmission of digital information, e.g. telegraphic communication9%
G06FElectric digital data processing6%
B82YSpecific uses or applications of nanostructures3%
H03GControl of amplification3%
H03KPulse technique3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
6,661,594'Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit'20036,496,316'Magnetic recording and reproduction apparatus'20026,175,460'Magnetic recording and reproduction apparatus'20016,046,873'Magnetic recording and reproducing apparatus including a viterbi detector having a variable reference amplitude value'20005,848,045'Method for recording and reading an optical disk'19985,818,655'Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit'19985,766,718'Longitudinal magnetic recording medium and apparatus'19985,703,855'Optical disk apparatus and recording and reading method for an optical disk using the same'19975,659,309'Data recording/reproducing apparatus having viterbi decoder and method thereof'19975,572,503'Correcting non-linear distortions of optical information with a non-linear equalizer'19965,572,699'Variable length data in a parallel disk array'19965,568,330'Recording/reproducing apparatus with maximum likelihood sequence estimation'19965,467,232'Magnetic recording and reproducing method using phase discrimination and apparatus therefor'19955,418,660'Information processing apparatus for processing reproduction signal having nonlinear characteristics'19955,400,189'Magnetic recording and reproducing apparatus, reproduction signal processing apparatus, and reproduction signal processing method'19955,392,316'Decoding method and apparatus with maximum likelihood sequence estimation'19955,325,364'Method for error correction and circuit for realizing same'19945,287,228'Peak detection method and apparatus therefor'19945,008,761'Readout circuit in magnetic recording device'19914,907,100'Readout circuit in magnetic recording device'19904,823,208'Multi slice level signal circuit'19894,774,601'Read channel for magnetic recording'19884,651,236'Waveform equalizing circuit'19874,644,424'Equalizer used for magnetic storage device'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2003Patents assigned to HITACHI LTD (24)· patent assignee history
1987–1988Based in Kokubunji, JP· patent location history
1989–1996Based in Koganei, JP· patent location history
1994–1998Based in Kodaira, JP· patent location history
1996–2003Based in Odawara, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 24 | 1987–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Odawara, JP | 9 | 1996–2003 |
| Kodaira, JP | 7 | 1994–1998 |
| Koganei, JP | 5 | 1989–1996 |
| Kokubunji, JP | 3 | 1987–1988 |