Configurable video output channel architecture
US5638137A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1993 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A configurable video output channel architecture includes a plurality of parallel video pipelines arranged to drive a video display; a device for selecting an output of one of the video pipelines and generating a readback signal representative thereof; and a device for adjusting a display specification of at least one of the video pipelines using the readback signal. The display specification adjusted may include the maximum video level, the blanking level, and the sync level of the video waveform. The adjusting device may also adjust the characteristic impedance of each pipeline. The selecting device includes a multiplexer and an analog to digital converter, and the adjusting device includes a controller which monitors the readback signal and generates a control signal to adjust the display specification if the readback signal is outside of a desired range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.