Descrambler unit method and apparatus for television signal descrambling
US4682223A · kind A · utility
11Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1983 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Oct 31, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of descrambling received video program signals with transmitted synchronization signals for use in a video receiver comprising the steps of providing first terminals for receiving the scrambled video signal and second terminals coupled to the video receiver and connecting an electronic ticket containing descrambling circuitry to the first terminals for receiving and descrambling the received video signal and coupling the descrambled video signal from the electronic ticket to the second terminals for transfer to the video receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.