| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 7 | |
| #2 | Japan | 6 | |
| #3 | United States | 5 | |
| #4 | Australia | 4 | |
| #5 | Canada | 4 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Telecommunications | |
| #3 | Computer technology |
| # | Technology | |
|---|---|---|
| #1 | Television | |
| #2 | Selecting | |
| #3 | Special information storage | |
| #4 | Secret communication | |
| #5 | Electric digital data processing | |
| #6 | Speech analysis |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heller Jerrold A | 7 |
| #2 | Paik Woo H | 6 |
| #3 | Gilhousen Klein S | 5 |
| #4 | Bradbury Colin | 4 |
| #5 | Dunn James E | 4 |
| #6 | Treadwell Stephen W | 4 |
| #7 | Holmes Kenneth R | 4 |
| #8 | Gilhouser Klein S | 2 |
| #9 | Uu Eichi Peiku | 2 |
| #10 | Van Harding Michael | 2 |
| Publication | Filing date | Title |
|---|---|---|
| WO8602726A1 | Relp vocoder implemented in digital signal processors | |
| US4613901A | Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals | |
| US4608456A | Digital audio scrambling system with error conditioning | |
| US4563702A | Video signal scrambling and descrambling systems | |
| JPS59148192A | Stack for data processor | |
| US4488290A | Distributed digital exchange with improved switching system and input processor | |
| US4504925A | Self-shifting LIFO stack |