Method and apparatus for adjusting video refresh rate in response to power mode changes in order to conserve power
US6476800B2 · kind B2 · utility
14Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides for a software routine executable by an image display system that controls at least one video timing signal (for example, the pixel clock signal) supplied to a display subsystem. More specifically, the software routine, adjusts the video timing signal in response to detection that the system is switching between power modes. The software routine preferably updates the video timing signal such that the system conserves power in response to detection that the system is switching from AC-powered operation to limited DC-powered operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.