Issued Patents All Time
Showing 76–100 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5917785 | Disk apparatus | Takashi Masaki, Toru Fujiwara | 1999-06-29 |
| 5914921 | Disk drive apparatus initializing optical head during acceleration of disk, detecting control information and adjusting light emission prior to disk reaching a constant speed of rotation | — | 1999-06-22 |
| 5901121 | Optical storage apparatus having improved eccentricity correction abilities | Tomonori Yamashita | 1999-05-04 |
| 5896354 | Optical storage apparatus having switching control circuit for controlling an envelope detecting function in accordance with a medium type or access type | Tomonori Yamashita | 1999-04-20 |
| 5892742 | Optical storage apparatus | Tomonori Yamashita | 1999-04-06 |
| 5796697 | Disk apparatus | Takashi Masaki, Toru Fujiwara | 1998-08-18 |
| 5777964 | Optical disk apparatus | Satoshi Furuta, Toru Fujiwara, Tadashi Sagawa, Masaharu Moritsugu | 1998-07-07 |
| 5732056 | Decoding unit and storage unit | — | 1998-03-24 |
| 5732055 | Optical storage apparatus | Takashi Masaki | 1998-03-24 |
| 5724328 | Disk drive apparatus having improved initialization process | — | 1998-03-03 |
| 5675562 | Seek control method in optical storage device | — | 1997-10-07 |
| 5673243 | Encoding unit and storage unit using the same | Satoshi Furuta | 1997-09-30 |
| 5633848 | Method and apparatus for cleaning an optical disk head on the basis of time accumulation | Takashi Masaki, Manabu Yamamoto | 1997-05-27 |
| 5631890 | Light modulation method for optical disk drive device | Toru Ikeda, Akira Minami | 1997-05-20 |
| 5499230 | Optical disk apparatus | — | 1996-03-12 |
| 5499223 | Beam position control system of an optical disk unit | Makoto Takayanagi, Kikuji Katoh | 1996-03-12 |
| 5495458 | Optical disk apparatus for detecting error readings of a track address in MCAV format | Toru Ikeda, Akira Minami | 1996-02-27 |
| 5481510 | Seek control system for optical storage apparatus | Takashi Masaki | 1996-01-02 |
| 5471451 | Disk apparatus including notifying of cleaning timing and control method thereof | Takashi Masaki, Manabu Yamamoto | 1995-11-28 |
| 5457671 | Method and circuit for correcting track zero crossing signal in optical track | Hidekazu Takata | 1995-10-10 |
| 5444684 | Seek control system of dual processor magneto-optic disk unit | Kazuki Kudo, Kikuji Katoh | 1995-08-22 |
| 5410528 | Servo tracking circuit of an optically writable/readable/erasable disk | Satoshi Furuta | 1995-04-25 |
| 5392273 | Optical storage drive controller with predetermined light source drive values stored in non-volatile memory | Takashi Masaki, Shigeru Arai | 1995-02-21 |
| 5357496 | Optical disk drive focus servo control system with focus servo being turned off or having gain reduced after tracking servo has been off a predetermined time period | Toru Ikeda | 1994-10-18 |
| 5351222 | Disk storage apparatus including a single power supply hysteresis comparator having a symmetrical characteristic | Toru Ikeda | 1994-09-27 |