Transmission signal ID for analog television broadcasts
US6483547B1 · kind B1 · utility
126Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1998 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Mar 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/485
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A received analog television service is positively identified using a transmission signal identifier that is inserted into the analog signal at the transmitter side, and extracted at the receiver side. Channel map data which is used for identifying counterpart digital programming services is extended to encompass identification of the analog services. Descriptive information which is specific to the programming services, such as program guide data, can thereby be accurately matched up and displayed with a received analog programming service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.