Inventor
MIYAZAWA SHOICHI
JP27 patents
Patents
27 patentsUS5953513ASep 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