Method and apparatus for transmitting and downloading setup information
US6583825B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1996 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Multiple channel maps are embedded in a television transmission and the appropriate channel corresponding to the particular television service used by the viewer is downloaded for use with the television receiver. Each channel map is accompanied by a channel map identifier which identifies the source of the television transmission and a geographic identifier. The source of a television transmission is automatically detected by monitoring the radio-frequency spectrum allocations of telecast stations. The geographic area identifier is determined by comparison with a user inputted geographic area identifier. The channel map having a channel map identifier corresponding to the detected television transmission source and the user inputted geographic area identifier is downloaded and stored for future use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.