Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4916555 | Method and apparatus for producing time base altered effects in data recording and reproducing apparatus | Richard A. Hathaway, Donald B. MacLeod | 1990-04-10 |
| 4751375 | Method and apparatus for reading bar code under rapidly changing scanning speed conditions | — | 1988-06-14 |
| 4494153 | Method of operating a signal reproduction apparatus for effecting synchronous reproduction of recorded signals | — | 1985-01-15 |
| 4481544 | Automatic tracking system with apparatus to prevent mistracking by a limited range transducer during stop motion | — | 1984-11-06 |
| 4319289 | Movable head automatic position acquisition circuit and method | — | 1982-03-09 |
| 4318142 | Automatically compensated movable head servo circuit and method | — | 1982-03-02 |
| 4308560 | Method of operating a signal reproducing apparatus for effecting synchronous reproduction of recorded signals | — | 1981-12-29 |
| 4215362 | Track selection method and apparatus | — | 1980-07-29 |
| 4197564 | Automatically calibrated RF envelope detector circuit | — | 1980-04-08 |