Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870565 | Parallel transfer type director means | Akira Yamamoto, Toru Nishigaki, Kiyoshi Hisano, Yoshiro Shiroyana | 1989-09-26 |
| 4819203 | Control system for interruption long data transfers between a disk unit or disk coche and main memory to execute input/output instructions | Yoshiro Shiroyanagi | 1989-04-04 |
| 4814904 | Method of controlling erasing following format writing in a magnetic disc apparatus | Kimiko Shigihara, Masahiro Nakayama | 1989-03-21 |
| 4807180 | Multiple control system for disk storage and method for realizing same | Hisaharu Takeuchi, Yoshiro Shiroyanagi, Hisashi Takamatsu, Katsunori Nakamura | 1989-02-21 |
| 4805048 | Method for controlling to keep off defects on magnetic disks | Hisaharu Takeuchi, Hisashi Takamatsu, Masahiro Nakayama, Yoshiro Shiroyanagi | 1989-02-14 |
| 4803572 | Recording/reproducing method and apparatus of magnetic disk unit in which playback commences before the magnetic head is completely centered on the track | Toshiyuki Haruna, Kenji Nishimura, Yuji Yoshida, Kiyotaka Takahashi, Tsuneo Hirose +4 more | 1989-02-07 |
| 4800483 | Method and system for concurrent data transfer disk cache system | Akira Yamamoto, Toru Nishigaki, Kiyoshi Hisano, Yoshiro Shiroyanagi | 1989-01-24 |