Wireless redistribution system for terrestrial digital television broadcasting
US7538825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Apr 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6112
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transmitter includes: frequency conversion means for collectively frequency-converting terrestrial digital TV broadcast signals inputted such that the frequency of terrestrial digital TV broadcast signals of a viewing desired channel inputted by viewing desired channel input means, among the terrestrial digital TV broadcast signals inputted, are converted to a frequency of a specific unused channel of a predetermined VHF band; filter means for extracting only TV broadcast signals of the specific unused channel of the predetermined VHF band among the TV broadcast signals obtained by the frequency conversion means; and transmission means for amplifying and wirelessly transmitting the TV broadcast signals extracted by the filter means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.