Akihiko Hirano

Person

Odawara-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Decoding apparatus and decoding method
- Patent number 7,199,955
- Issue date Apr 3, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Akihiko Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoding circuit using path sequence including feed-back type path...
- Patent number 6,725,418
- Issue date Apr 20, 2004
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoding apparatus and decoding method
- Patent number 6,704,154
- Issue date Mar 9, 2004
- Hitachi, Ltd.
- Akihiko Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Performance evaluation method, performance evaluation system, and i...
- Patent number 6,697,976
- Issue date Feb 24, 2004
- Hitachi, Ltd.
- Naoki Satoh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Signal processing circuit and information recording/reproducing app...
- Patent number 6,661,594
- Issue date Dec 9, 2003
- Hitachi, Ltd.
- Naoki Satoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Coding apparatus and coding method
- Patent number 6,335,841
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Akihiko Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoding circuit and information processing apparatus
- Patent number 6,334,201
- Issue date Dec 25, 2001
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk storage apparatus
- Patent number 6,266,200
- Issue date Jul 24, 2001
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE
Information Patent Grant
Reproduced signal processing method, reproduced signal processing c...
- Patent number 6,104,331
- Issue date Aug 15, 2000
- Hitachi, Ltd.
- Yoshiteru Ishida
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of and apparatus for detecting phase
- Patent number 6,034,998
- Issue date Mar 7, 2000
- Hitachi, Ltd.
- Terumi Takashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk storage apparatus with phase sync circuit having cont...
- Patent number 5,999,353
- Issue date Dec 7, 1999
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital signal decoding apparatus and a decoding method used therein
- Patent number 5,940,416
- Issue date Aug 17, 1999
- Hitachi Ltd.
- Takushi Nishiya
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal processing circuit and information recording/reproducing app...
- Patent number 5,818,655
- Issue date Oct 6, 1998
- Hitachi, Ltd.
- Naoki Satoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Phase lock loop system including a primary phase lock loop apparatu...
- Patent number 5,805,024
- Issue date Sep 8, 1998
- Hitachi, Ltd.
- Terumi Takashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording/reproducing apparatus having viterbi decoder and met...
- Patent number 5,659,309
- Issue date Aug 19, 1997
- Hitachi, Ltd.
- Terumi Takashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk storage apparatus with phase sync circuit having cont...
- Patent number 5,633,766
- Issue date May 27, 1997
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording/reproducing apparatus having a clock timing e...
- Patent number 5,553,104
- Issue date Sep 3, 1996
- Hitachi, Ltd.
- Terumi Takashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Sync data introduction method and system
- Patent number 5,475,715
- Issue date Dec 12, 1995
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk system and waveform equalizer therefor
- Patent number 5,463,504
- Issue date Oct 31, 1995
- Hitachi, Ltd.
- Hiroshi Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
AGC circuit and recording and reproducing apparatus using AGC circuit
- Patent number 5,448,424
- Issue date Sep 5, 1995
- Hitachi, Ltd.
- Akihiko Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk storage apparatus with phase sync circuit having cont...
- Patent number 5,404,250
- Issue date Apr 4, 1995
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Decoding apparatus and decoding method
- Publication number 20040156136
- Publication date Aug 12, 2004
- Akihiko Hirano
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Signal processing circuit and information recording/reproducing app...
- Publication number 20030035236
- Publication date Feb 20, 2003
- Hitachi, Ltd.
- Naoki Satoh
- G11 - INFORMATION STORAGE
Information Patent Application
Decoding circuit and information processing apparatus
- Publication number 20020040462
- Publication date Apr 4, 2002
- Hitachi, Ltd.
- Hideki Sawaguchi
- G11 - INFORMATION STORAGE
Information Patent Application
Decoding apparatus and decoding method
- Publication number 20020030913
- Publication date Mar 14, 2002
- Akihiko Hirano
- G11 - INFORMATION STORAGE
Information Patent Application
Signal processing circuit and information recording/reproducing app...
- Publication number 20010009483
- Publication date Jul 26, 2001
- Naoki Satoh
- G11 - INFORMATION STORAGE

Akihiko Hirano

Person

Patents Grantslast 30 patents

Decoding apparatus and decoding method

Decoding circuit using path sequence including feed-back type path...

Decoding apparatus and decoding method

Performance evaluation method, performance evaluation system, and i...

Signal processing circuit and information recording/reproducing app...

Coding apparatus and coding method

Decoding circuit and information processing apparatus

Magnetic disk storage apparatus

Reproduced signal processing method, reproduced signal processing c...

Method of and apparatus for detecting phase

Magnetic disk storage apparatus with phase sync circuit having cont...

Digital signal decoding apparatus and a decoding method used therein

Signal processing circuit and information recording/reproducing app...

Phase lock loop system including a primary phase lock loop apparatu...

Data recording/reproducing apparatus having viterbi decoder and met...

Magnetic disk storage apparatus with phase sync circuit having cont...

Information recording/reproducing apparatus having a clock timing e...

Sync data introduction method and system

Magnetic disk system and waveform equalizer therefor

AGC circuit and recording and reproducing apparatus using AGC circuit

Magnetic disk storage apparatus with phase sync circuit having cont...

Patents Applicationslast 30 patents

Decoding apparatus and decoding method

Signal processing circuit and information recording/reproducing app...

Decoding circuit and information processing apparatus

Decoding apparatus and decoding method

Signal processing circuit and information recording/reproducing app...