Akira Motoyama

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Tokorozawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Circuit for digitally generating a tracking error signal to avoid o...
- Patent number 4,935,912
- Issue date Jun 19, 1990
- Pioneer Electronic Corporation
- Hiroyuki Hirano
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo circuit for generating a tracking error signal for optical di...
- Patent number 4,860,271
- Issue date Aug 22, 1989
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Actuator drive circuit
- Patent number 4,737,696
- Issue date Apr 12, 1988
- Pioneer Electronic Corporation
- Fumihiko Yokogawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Pickup level control device for a system for reading out recorded i...
- Patent number 4,558,213
- Issue date Dec 10, 1985
- Pioneer Electronic Corporation
- Koki Aizawa
- G11 - INFORMATION STORAGE