Tsuguyoshi Hirooka

Person

Fujisawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording and reproducing apparatus and semiconductor inte...
- Patent number 6,700,721
- Issue date Mar 2, 2004
- Hitachi, Ltd.
- Eisaku Saiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and reproducing apparatus and a read/write ampli...
- Patent number 6,452,736
- Issue date Sep 17, 2002
- Hitachi, Ltd.
- Eisaku Saiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Digital information signal reproducing circuit and digital informat...
- Patent number 5,937,020
- Issue date Aug 10, 1999
- Hitachi, Ltd.
- Kenichi Hase
- G11 - INFORMATION STORAGE
Information Patent Grant
Decoder circuitry with PRML signal processing for reproducing appar...
- Patent number 5,872,666
- Issue date Feb 16, 1999
- Hitachi, Ltd.
- Eisaku Saiki
- G11 - INFORMATION STORAGE
Information Patent Grant
Data recording and reproducing apparatus and phase locked loop circ...
- Patent number 5,867,333
- Issue date Feb 2, 1999
- Hitachi, Ltd.
- Eisaku Saiki
- G11 - INFORMATION STORAGE
Information Patent Grant
AD converter and magnetic recording/regenerating apparatus using th...
- Patent number 5,745,066
- Issue date Apr 28, 1998
- Hitachi, Ltd.
- Tsuguyoshi Hirooka
- G11 - INFORMATION STORAGE
Information Patent Grant
Ad converter and magnetic recording/regenerating apparatus using th...
- Patent number 5,557,274
- Issue date Sep 17, 1996
- Hitachi, Ltd.
- Tsuguyoshi Hirooka
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic recording and reproducing apparatus and semiconductor inte...
- Publication number 20020171960
- Publication date Nov 21, 2002
- Eisaku Saiki
- G11 - INFORMATION STORAGE

Tsuguyoshi Hirooka

Person

Patents Grantslast 30 patents

Magnetic recording and reproducing apparatus and semiconductor inte...

Magnetic recording and reproducing apparatus and a read/write ampli...

Digital information signal reproducing circuit and digital informat...

Decoder circuitry with PRML signal processing for reproducing appar...

Data recording and reproducing apparatus and phase locked loop circ...

AD converter and magnetic recording/regenerating apparatus using th...

Ad converter and magnetic recording/regenerating apparatus using th...

Patents Applicationslast 30 patents

Magnetic recording and reproducing apparatus and semiconductor inte...