Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4951272 | System and method for accessing tracks for optical disc apparatus | Sumihiro Okawa | 1990-08-21 |
| 4896310 | Light beam control arrangements for optical disc apparatus | — | 1990-01-23 |
| 4820940 | Control circuits operating with pulse-width modulated signals | Akashi Ito, Fumihiko Yoshii | 1989-04-11 |
| 4652799 | Apparatus for driving a recording medium at a constant speed relative to a pickup device | — | 1987-03-24 |
| 4647828 | Servo system | — | 1987-03-03 |
| 4551661 | Driving apparatus for a recording medium | — | 1985-11-05 |
| 4543650 | Servo system including velocity and phase servo circuits for digital audio record disc reproducing apparatus | — | 1985-09-24 |
| 4539666 | Apparatus for controlling rotation of a record disk at a constant linear velocity | — | 1985-09-03 |
| 4466089 | Information signal reproducing apparatus | — | 1984-08-14 |
| 4208706 | Switching regulator | Tadao Suzuki | 1980-06-17 |
| 4183079 | DC-AC inverter | — | 1980-01-08 |