Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901351 | Video signal scramble system | Masatoshi Tanaka, Wataru Kuroiwa, Jyoji Maeda, Shouji Uehara, Tsutomu Uekusa | 1990-02-13 |
| 4827511 | Automatic gain control circuit for controlling gain of video signal in television receiver | — | 1989-05-02 |
| 4752954 | Upstream signal control apparatus in bidirectional CATV system | — | 1988-06-21 |
| 4742545 | Video picture signal scrambling system | — | 1988-05-03 |
| 4724478 | Cable television communication system with passive sensor signal path and a subscriber power supply source | Akio Ogawa, Yasuhiro Muramatsu, Hideki Hirosawa, Robert M. Rast, W. Sherwood Campbell | 1988-02-02 |
| 4686564 | Communication data processing device of cable television system | Wataru Kuroiwa, Shouji Uehara, Tsutomu Uekusa, Robert M. Rast, W. Sherwood Campbell | 1987-08-11 |
| 4613826 | Frequency synthesizer for CATV tuner | Wataru Kuroiwa, Yasufumi Shimizu, Hideki Hirosawa | 1986-09-23 |
| 4512000 | Object detector which compares returned signals from successive transmissions | — | 1985-04-16 |
| 4442413 | Television receiver phase locked loop tuning arrangement | Shizuo Hayashida | 1984-04-10 |