Television apparatus for simultaneous decoding of auxiliary data included in multiple television signals
US6055023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Television apparatus includes first and second auxiliary data decoders for simultaneously extracting auxiliary data from respective first and second television signals to produce first and second auxiliary data. The data decoders can selectably extract data from one or more auxiliary data intervals, e.g., one or more line intervals during vertical blanking within a television signal. The first and second auxiliary data is coupled to a controller such as the main microprocessor of the television system. The second auxiliary data is coupled to the controller via an auxiliary data buffer and an I.sup.2 C serial data bus. The television signal from which the second auxiliary data is extracted can be provided by a second television signal source such as a second tuner or an external signal source (e.g., video cassette recorder, video disk player, and the like).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.