Inventor · disambiguated record
Shoichi Miyazawa
Also filed as: KATAYAMA YUKARI · MIYAZAWA SHOICHI · TSUNODA MOTOYASU · YAMAMOTO KATSUMI
30 granted patents·1 pending application·689 citations·filing 1991–2006
98Inventor score
Top patents by PatentIndex Score
31 records- 0192US5715105AMethod 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 areaHITACHI LTD·Filed 1993·Granted Feb 3, 1998·43 cites·22 claims
- 0285US6445522B1Disk device and method of generating signal representing headHITACHI LTD·Filed 2000·Granted Sep 3, 2002·13 cites·33 claims
- 0385US6108158AMethod and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 1997·Granted Aug 22, 2000·33 cites·10 claims
- 0485US5677802APhase locked loop circuit with adjustable offset characteristic, method for adjustment and apparatusHITACHI LTD·Filed 1995·Granted Oct 14, 1997·49 cites·20 claims
- 0584US6661594B2Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 2002·Granted Dec 9, 2003·14 cites·13 claims
- 0682US7139143B2Disk device and method of generating signal representing headHITACHI LTD·Filed 2003·Granted Nov 21, 2006·10 cites·16 claims
- 0782US5937020ADigital information signal reproducing circuit and digital information systemHITACHI LTD·Filed 1996·Granted Aug 10, 1999·42 cites·42 claims
- 0881US5818655ASignal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 1995·Granted Oct 6, 1998·30 cites·35 claims
- 0981US5771248AApparatus and method for error correctionHITACHI LTD·Filed 1995·Granted Jun 23, 1998·33 cites·8 claims
- 1080US6400523B1Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 2001·Granted Jun 4, 2002·10 cites·4 claims
- 1180US5740465AArray disk controller for grouping host commands into a single virtual host commandHITACHI LTD·Filed 1993·Granted Apr 14, 1998·87 cites·8 claims
- 1279US5361364APeripheral equipment control deviceHITACHI LTD·Filed 1991·Granted Nov 1, 1994·62 cites·33 claims
- 1378US7430085B2Disk device and method of generating signal representing headHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 30, 2008·2 cites·2 claims
- 1478US5774470ADigital signal processor, error detection method, and recording medium reproducerHITACHI LTD·Filed 1995·Granted Jun 30, 1998·34 cites·12 claims
- 1577US5872666ADecoder circuitry with PRML signal processing for reproducing apparatusHITACHI LTD·Filed 1995·Granted Feb 16, 1999·35 cites·3 claims
- 1676US6236528B1Method and apparatus for recording and reproducing disk-type recording medium with dual head including reading head and writing head having offset coresHITACHI LTD·Filed 2000·Granted May 22, 2001·8 cites·2 claims
- 1771US5940416ADigital signal decoding apparatus and a decoding method used thereinHITACHI LTD·Filed 1997·Granted Aug 17, 1999·32 cites·9 claims
- 1870US5953513ARecording and reproducing device for recording and reproducing information from different kinds of storage media having different sector formatsHITACHI LTD·Filed 1995·Granted Sep 14, 1999·57 cites·25 claims
- 1968US5745066AAD converter and magnetic recording/regenerating apparatus using thereofHITACHI LTD·Filed 1996·Granted Apr 28, 1998·17 cites·30 claims
- 2059USRE39253EApparatus and method for error correctionHITACHI LTD·Filed 2000·Granted Aug 29, 2006·3 cites·21 claims
- 2159US6563656B2Disk device and method of generating signal representing headHITACHI LTD·Filed 2002·Granted May 13, 2003·2 cites·12 claims
- 2259US6172828B1Signal processing apparatus and a disk control apparatus, with head positioning control based on digitized servo dataHITACHI LTD·Filed 1997·Granted Jan 9, 2001·9 cites·12 claims
- 2357US5222002ASemiconductor integrated circuit which performs phase synchronizationHITACHI LTD·Filed 1991·Granted Jun 22, 1993·10 cites·9 claims
- 2455US6700721B2Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generatorHITACHI LTD·Filed 2002·Granted Mar 2, 2004·2 cites·11 claims
- 2554US5892958APeripheral equipment control deviceHITACHI LTD·Filed 1996·Granted Apr 6, 1999·21 cites·18 claims
- 2646US6452736B1Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signalHITACHI LTD·Filed 1995·Granted Sep 17, 2002·6 cites·8 claims
- 2746US5557274AAd converter and magnetic recording/regenerating apparatus using the sameHITACHI LTD·Filed 1994·Granted Sep 17, 1996·5 cites·7 claims
- 2844US5463504AMagnetic disk system and waveform equalizer thereforHITACHI LTD·Filed 1993·Granted Oct 31, 1995·5 cites·13 claims
- 2943US5675812APeripheral equipment control deviceHITACHI LTD·Filed 1995·Granted Oct 7, 1997·11 cites·18 claims
- 3042US2001009483A1Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitFiled 2001·Application pending·0 cites
- 3133US5479619APeripheral equipment control deviceHITACHI LTD·Filed 1994·Granted Dec 26, 1995·4 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →