Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4920424 | Method of recording and reproducing multi-channel information on and from recording medium | Sumio Hosaka, Toshiyuki Amaya, Toshiji Daito, Hiroshi Itoh | 1990-04-24 |
| 4847840 | Digital data error block detection and display device | — | 1989-07-11 |
| 4706134 | Playback unit for still pictures with sound | — | 1987-11-10 |