Issued Patents All Time
Showing 101–118 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5289447 | Track cross signal generation circuit of optical disk device for correctly outputting track cross signal and correctly and stably carrying out seek operation even within high-speed region of beam | Shigeko Kobayashi, Akira Minami | 1994-02-22 |
| 5258966 | Positioner seek control system of a disk apparatus and method for scanning a beam across a medium | — | 1993-11-02 |
| 5241522 | Optical disk apparatus using transition control between positioner seek control and lens seek control | — | 1993-08-31 |
| 5228019 | Method and apparatus for measuring speed of movement during beam track movement in optical memory apparatus | — | 1993-07-13 |
| 5202865 | Track access control apparatus for optical disk apparatus | — | 1993-04-13 |
| 5195067 | Track access control system for a disk storage system | — | 1993-03-16 |
| 5189653 | Optical disk device eliminating offset of actuator and offset eliminating method used thereby | — | 1993-02-23 |
| 5182736 | Deceleration control system for positioning an optical head in an optical disk unit | — | 1993-01-26 |
| 5175722 | Power supply circuit for stabilizing power input to a laser diode | Akira Minami | 1992-12-29 |
| 5163033 | Track access control system in rotating disc devices with eccentricity correction | — | 1992-11-10 |
| 5150347 | Beam track position control apparatus for optical disk apparatus | — | 1992-09-22 |
| 5142520 | System for obtaining optimum focusing position in optical disc system | Akira Minami, Masateru Sasaki, Shigeru Arai, Toshitaka Iwamoto, Hidenori Saitoh | 1992-08-25 |
| 5121370 | Apparatus and method for accurately scanning a light beam across tracks of a recording medium | — | 1992-06-09 |
| 5086419 | Optical disk apparatus for controlling second optical beam based on bias information | — | 1992-02-04 |
| 5077719 | Optical disk access system | Masateru Sasaki, Akira Minami, Toshitaka Iwamoto, Shigeyoshi Tanaka | 1991-12-31 |
| 5033037 | Track access control circuit of optical disk unit | — | 1991-07-16 |
| 4985882 | Track access control system for disk system, having eccentricity correction means | Shigeyoshi Tanaka | 1991-01-15 |
| 4975895 | Track servo control system for optical disk apparatus | — | 1990-12-04 |