Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675569 | Readback circuit for an optical information reading and recording apparatus | Takeshi Yamaguchi, Hiroshige Hirajima | 1997-10-07 |
| 5673046 | Analog-to-digital conversion circuit for use in information reproduction apparatuses | Hiroshige Hirajima, Hiroshi Fuji | 1997-09-30 |