Mariko Umeda

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical disk apparatus and tracking method
- Patent number RE43018
- Issue date Dec 13, 2011
- Hitachi, Ltd.
- Mariko Umeda
- 369 - Dynamic information storage or retrieval
Information Patent Grant
Optical disk apparatus and tracking method
- Patent number 7,746,734
- Issue date Jun 29, 2010
- Hitachi, Ltd.
- Mariko Umeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Information recording/reproducing method and information recording/...
- Patent number 7,558,178
- Issue date Jul 7, 2009
- Hitachi, Ltd.
- Takahiro Kurokawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording method and recording apparatus
- Patent number 7,352,673
- Issue date Apr 1, 2008
- Hitachi, Ltd.
- Mariko Umeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head and optical disk apparatus
- Patent number 7,068,572
- Issue date Jun 27, 2006
- Hitachi, Ltd.
- Tetsuo Ariyoshi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head and optical disk apparatus
- Patent number 6,807,133
- Issue date Oct 19, 2004
- Hitachi, Ltd.
- Tetsuo Ariyoshi
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk device having optical phase compensator
- Patent number 5,784,347
- Issue date Jul 21, 1998
- Hitachi, Ltd.
- Harukazu Miyamoto
- 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
Optical information processing apparatus and method of controlling...
- Patent number 5,490,133
- Issue date Feb 6, 1996
- Hitachi, Ltd.
- Shigeru Nakamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head and information recording apparatus
- Patent number 5,361,244
- Issue date Nov 1, 1994
- Hitachi, Ltd.
- Shigeru Nakamura
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DISK APPARATUS AND TRACKING METHOD
- Publication number 20070291600
- Publication date Dec 20, 2007
- Mariko UMEDA
- G11 - INFORMATION STORAGE
Information Patent Application
Information recording/reproducing method and information recording/...
- Publication number 20060233070
- Publication date Oct 19, 2006
- Hitachi, Ltd.
- Takahiro Kurokawa
- G11 - INFORMATION STORAGE
Information Patent Application
Recording method and recording apparatus
- Publication number 20050207306
- Publication date Sep 22, 2005
- Mariko Umeda
- G11 - INFORMATION STORAGE
Information Patent Application
Optical head and optical disk apparatus
- Publication number 20050025000
- Publication date Feb 3, 2005
- Tetsuo Ariyoshi
- G11 - INFORMATION STORAGE
Information Patent Application
Optical head and optical disk apparatus
- Publication number 20020176331
- Publication date Nov 28, 2002
- Tetsuo Ariyoshi
- G11 - INFORMATION STORAGE

Mariko Umeda

Person

Patents Grantslast 30 patents

Optical disk apparatus and tracking method

Optical disk apparatus and tracking method

Information recording/reproducing method and information recording/...

Recording method and recording apparatus

Optical head and optical disk apparatus

Optical head and optical disk apparatus

Optical disk device having optical phase compensator

Focus error detecting method and optical head using the same

Optical information processing apparatus and method of controlling...

Optical head and information recording apparatus

Patents Applicationslast 30 patents

OPTICAL DISK APPARATUS AND TRACKING METHOD

Information recording/reproducing method and information recording/...

Recording method and recording apparatus

Optical head and optical disk apparatus

Optical head and optical disk apparatus