Digital television transmitter identification system using pseudo-random sequences
US7202914B2 · kind B2 · utility
6Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jul 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/438
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a transmitter identification system, which utilizes an identification signal embedded into a digital television signal, enabling the transmitter of origin to be identified at a receiving station. Ideally the identification signal is an orthogonal pseudo-random sequence time synchronized to the signal frame structure of the digital television signal. Particularly designed for single frequency networks, identification of the various transmitted signals enables the network to be tuned to eliminate or minimize multi-path effects at certain locations, which receive transmissions from various transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.