Method and apparatus for determining type of video signal to be output
US9071769B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Dec 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/641
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for determining a type of video signal to be output is provided. The method includes: respectively extracting detection signals in video signals in different video output interface modes; respectively converting the extracted detection signal into a direct current voltage signal; and respectively comparing the direct current voltage signal with a voltage threshold, and determining, according to a comparison result, a type of video signal to be output. An embodiment further provides an apparatus for determining a type of video signal to be output. The embodiments of the present invention, by respectively extracting a detection signal included in a video signal in each video output interface mode, and comparing a voltage of the detection signal with a voltage threshold, determine whether a corresponding DAC port in the each video output interface mode is connected to a load terminal, and thereby determine a video signal to be output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.