System for broadcasting audio-visual television signals synchronized by a pilot frequency and method for the application of said system
US4357626A · kind A · utility
7Cited by
17References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1979 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Oct 26, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a system for broadcasting audio-visual television signals, a pure-frequency pilot signal is recorded concurrently with the video signals. The synchronizing signals which are necessary for reproduction of the aduio-visual signals are reconstituted from the pilot signal during the reading process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.