Masuo Kasai

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic head load/unload device, method and a magneto-optical disk...
- Patent number 5,644,554
- Issue date Jul 1, 1997
- Hitachi, Ltd.
- Kunio Harada
- G11 - INFORMATION STORAGE
Information Patent Grant
Focus error detecting method and optical head using the same
- Patent number 5,511,050
- Issue date Apr 23, 1996
- Hitachi, Ltd.
- Kiyoshi Matsumoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Light spot positioning method and optical disc memory apparatus emp...
- Patent number 5,396,477
- Issue date Mar 7, 1995
- Hitachi, Ltd.
- Kiyoshi Matsumoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Stack type optical disc apparatus, sealed and separate type optical...
- Patent number 5,235,591
- Issue date Aug 10, 1993
- Hitachi, Ltd.
- Shigeru Nakamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Beam position control apparatus
- Patent number 5,161,046
- Issue date Nov 3, 1992
- Hitachi Koki Co., Ltd.
- Minoru Ohshima
- G02 - OPTICS
Information Patent Grant
Optical disk apparatus having auto-focusing servo systems for multi...
- Patent number 5,034,941
- Issue date Jul 23, 1991
- Hitachi, Ltd.
- Masuo Kasai
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical tape apparatus with a tracking control mechanism and/or a f...
- Patent number 4,970,707
- Issue date Nov 13, 1990
- Hitachi, Ltd.
- Fumio Hara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disc access method and optical disk storage using coarse an...
- Patent number 4,866,687
- Issue date Sep 12, 1989
- Hitachi, Ltd.
- Masuo Kasai
- G11 - INFORMATION STORAGE
Information Patent Grant
Eccentricity correction during optical head accessing of a desired...
- Patent number 4,745,587
- Issue date May 17, 1988
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc accessing using coarse and fine actuators with the fine actuat...
- Patent number 4,736,353
- Issue date Apr 5, 1988
- Hitachi Ltd.
- Masuo Kasai
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking servo setting method and apparatus
- Patent number 4,731,771
- Issue date Mar 15, 1988
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Phase compensation apparatus for an optical information recording a...
- Patent number 4,710,909
- Issue date Dec 1, 1987
- Hitachi, Ltd.
- Toshiaki Tsuyoshi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic bubble information writing device
- Patent number 4,120,042
- Issue date Oct 10, 1978
- Hitachi, Ltd.
- Masuo Kasai
- G11 - INFORMATION STORAGE

Masuo Kasai

Person

Patents Grantslast 30 patents

Magnetic head load/unload device, method and a magneto-optical disk...

Focus error detecting method and optical head using the same

Light spot positioning method and optical disc memory apparatus emp...

Stack type optical disc apparatus, sealed and separate type optical...

Beam position control apparatus

Optical disk apparatus having auto-focusing servo systems for multi...

Optical tape apparatus with a tracking control mechanism and/or a f...

Optical disc access method and optical disk storage using coarse an...

Eccentricity correction during optical head accessing of a desired...

Disc accessing using coarse and fine actuators with the fine actuat...

Tracking servo setting method and apparatus

Phase compensation apparatus for an optical information recording a...

Magnetic bubble information writing device