Scrambling method
US5442700A · kind A · utility
104Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Sep 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2007/1739
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for scrambling a television signal by designating a horizontal line number on a pseudorandom basis and then stripping the vertical and horizontal synch components from the signal at each location of a frame except at the designated line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.