Method and system for including non-graphic data in an analog video output signal of a set-top box
US7463311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2002 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Nov 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/435
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for including non-graphic data in an analog video output signal of a set-top box. Graphics data is generated from and represents non-graphic data using software or firmware that is executed by a processor, system-on-a-chip integrated circuit, or some other component of the set-top box. The graphics data is alpha blended with video data that is extracted from a digital television signal. This alpha blending results in an alpha blended digital video signal. The alpha blended digital video signal is converted into the analog video output signal by a digital encoder function, which is preferably included in the system-on-a-chip integrated circuit. The alpha blending is also preferably performed by the alpha blending function of the system-on-a-chip integrated circuit. The analog video output signal can then be input into an analog video recorder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.