Processor for receiving data from a video signal
US5572247A · kind A · utility
115Cited by
73References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Apr 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/445
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Signal processors for permitting the transparent reception of a data signal in the video bandwidth of a cable television system is disclosed. The received signal has video and data components that are frequency interleaved in the video bandwidth in the active video intervals. The data signal is modulated with a carrier at a non-integral multiple of the horizontal scanning rate of the video signal. The receiver selects a forward channel transmitting the combined signal responsive to a control signal and extracts the data portion of the transmitted combined signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.