Power management in a display controller
US7484112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Feb 16, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/047
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Managing power in a display controller having an on-board power supply coupled to a host device having an off-board power supply by way of a connector is described. If the on-board power supply is active, then power is supplied to the display controller by the off-board power supply by way of the connector and a low frequency clock arranged to provide a low frequency clock signal is turned on. Alternatively, when it is determined that the on-board power supply is active, then power is supplied to the display controller by the on-board power supply only, the low frequency clock is turned off and a high frequency clock arranged to provide a high frequency clock signal is turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.