P

Inventor

MIYAZAWA SHOICHI

JP27 patents

Patents

27 patents
US5953513ASep 14, 1999

Recording and reproducing device for recording and reproducing information from different kinds of storage media having different sector formats

HITACHI LTD57 citations96
US5740465AApr 14, 1998

Array disk controller for grouping host commands into a single virtual host command

HITACHI LTD87 citations96
US5715105AFeb 3, 1998

Method of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data area

HITACHI LTD43 citations96
US5361364ANov 1, 1994

Peripheral equipment control device

HITACHI LTD62 citations95
US6108158AAug 22, 2000

Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores

HITACHI LTD33 citations92
US5940416AAug 17, 1999

Digital signal decoding apparatus and a decoding method used therein

HITACHI LTD32 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
US5774470AJun 30, 1998

Digital signal processor, error detection method, and recording medium reproducer

HITACHI LTD34 citations92
US5771248AJun 23, 1998

Apparatus and method for error correction

HITACHI LTD33 citations92
US5745066AApr 28, 1998

AD converter and magnetic recording/regenerating apparatus using thereof

HITACHI LTD17 citations92
US5677802AOct 14, 1997

Phase locked loop circuit with adjustable offset characteristic, method for adjustment and apparatus

HITACHI LTD49 citations92
US5892958AApr 6, 1999

Peripheral equipment control device

HITACHI LTD21 citations91
US5937020AAug 10, 1999

Digital information signal reproducing circuit and digital information system

HITACHI LTD42 citations90
US5872666AFeb 16, 1999

Decoder circuitry with PRML signal processing for reproducing apparatus

HITACHI LTD35 citations90
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
US6445522B1Sep 3, 2002

Disk device and method of generating signal representing head

HITACHI LTD13 citations82
US6400523B1Jun 4, 2002

Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores

HITACHI LTD10 citations74
US6236528B1May 22, 2001

Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset cores

HITACHI LTD8 citations74
US6172828B1Jan 9, 2001

Signal processing apparatus and a disk control apparatus, with head positioning control based on digitized servo data

HITACHI LTD9 citations74
US5222002AJun 22, 1993

Semiconductor integrated circuit which performs phase synchronization

HITACHI LTD10 citations74
US6452736B1Sep 17, 2002

Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal

HITACHI LTD6 citations73
US5557274ASep 17, 1996

Ad converter and magnetic recording/regenerating apparatus using the same

HITACHI LTD5 citations73
US5675812AOct 7, 1997

Peripheral equipment control device

HITACHI LTD11 citations72
US5479619ADec 26, 1995

Peripheral equipment control device

HITACHI LTD4 citations72
US6563656B2May 13, 2003

Disk device and method of generating signal representing head

HITACHI LTD2 citations63
US5463504AOct 31, 1995

Magnetic disk system and waveform equalizer therefor

HITACHI LTD5 citations63
US6700721B2Mar 2, 2004

Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generator

HITACHI LTD2 citations62