Digital broadcasting receiver
US7092044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Apr 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital broadcasting receiver that uses a channel map containing broadcast information such as channel numbers and virtual channel numbers is described. When a user selects a certain digital channel number, a control unit consisting of a CPU makes a search as to whether or not the number exists in the channel map. If the number does not exist, “No Signal” notice is displayed on a display and if the user selects a scan instruction then, the entire range of frequency band of the broadcasting signal is scanned. If a signal that corresponds to the digital channel number exists, its broadcast is received. Therefore, a search is possible even when the user knows only a virtual channel number and the digital channel number entered by the user is not registered in the channel map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.