Masahiro Takasago

Person

Odawara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for optical recording and reproducing with tra...
- Patent number RE39013
- Issue date Mar 14, 2006
- Hitachi, Ltd.
- Toshimitsu Kaku
- 369 - Dynamic information storage or retrieval
Information Patent Grant
Tracking following apparatus for optical disk device
- Patent number 5,559,768
- Issue date Sep 24, 1996
- Hitachi, Ltd.
- Masamichi Ito
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reproducing data from a regenerative signal using a P...
- Patent number 5,448,543
- Issue date Sep 5, 1995
- Hitachi, Ltd.
- Takuya Mizokami
- G11 - INFORMATION STORAGE
Information Patent Grant
Controlling positioning of recording/reproducing head by combining...
- Patent number 5,285,435
- Issue date Feb 8, 1994
- Hitachi, Ltd.
- Masahiro Takasago
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic gain control method and apparatus in optical disk system
- Patent number 5,124,967
- Issue date Jun 23, 1992
- Hitachi, Ltd.
- Kazuo Isaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for optical recording and reproduction with tr...
- Patent number 5,105,409
- Issue date Apr 14, 1992
- Hitachi, Ltd.
- Toshimitsu Kaku
- 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
Optical recording/reproducing method and apparatus for optical disk...
- Patent number 4,853,915
- Issue date Aug 1, 1989
- Hitachi, Ltd.
- Masahiro Takasago
- G11 - INFORMATION STORAGE
Information Patent Grant
Defect detecting optical apparatus enabling recording in an alterna...
- Patent number 4,730,290
- Issue date Mar 8, 1988
- Hitachi, Ltd.
- Masahiro Takasago
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information recording and reproducing apparatus with tracki...
- Patent number 4,726,004
- Issue date Feb 16, 1988
- Hitachi, Ltd.
- Masahiro Takasago
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical position detecting apparatus for positioning an actuator
- Patent number 4,650,332
- Issue date Mar 17, 1987
- Hitachi, Ltd.
- Koji Muraoka
- G01 - MEASURING TESTING
Information Patent Grant
Optical memory apparatus
- Patent number 4,607,358
- Issue date Aug 19, 1986
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of detecting light spot control signal
- Patent number 4,563,760
- Issue date Jan 7, 1986
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information processor
- Patent number 4,554,652
- Issue date Nov 19, 1985
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
System for optically recording information
- Patent number 4,550,394
- Issue date Oct 29, 1985
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information disc apparatus with autofocusing servo system
- Patent number 4,542,491
- Issue date Sep 17, 1985
- Hitachi, Ltd.
- Masahiro Takasago
- G11 - INFORMATION STORAGE
Information Patent Grant
For jumping a light spot on a track of a recording medium
- Patent number 4,541,083
- Issue date Sep 10, 1985
- Hitachi, Ltd.
- Takeshi Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Driving apparatus for semiconductor laser
- Patent number 4,523,089
- Issue date Jun 11, 1985
- Hitachi, Ltd.
- Takeshi Maeda
- H01 - BASIC ELECTRIC ELEMENTS

Masahiro Takasago

Person

Patents Grantslast 30 patents

Method and apparatus for optical recording and reproducing with tra...

Tracking following apparatus for optical disk device

Apparatus for reproducing data from a regenerative signal using a P...

Controlling positioning of recording/reproducing head by combining...

Automatic gain control method and apparatus in optical disk system

Method and apparatus for optical recording and reproduction with tr...

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

Optical recording/reproducing method and apparatus for optical disk...

Defect detecting optical apparatus enabling recording in an alterna...

Optical information recording and reproducing apparatus with tracki...

Optical position detecting apparatus for positioning an actuator

Optical memory apparatus

Method of detecting light spot control signal

Optical information processor

System for optically recording information

Optical information disc apparatus with autofocusing servo system

For jumping a light spot on a track of a recording medium

Driving apparatus for semiconductor laser