Method and apparatus for refreshing display
US8810589B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Dec 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the disclosure provide an integrated circuit. The integrated circuit includes a first memory, a memory controller, and a display controller coupled to a display module. The memory controller is selectively coupled to the first memory and to a second memory that has higher power consumption than the first memory. The second memory includes a frame buffer storing pixel data of images to be displayed on the display module. When the integrated circuit enters a power saving mode, the memory controller, while coupled to the first memory and the second memory, pre-fetches pixel data of an image from the second memory into the first memory at a first data rate. Further, when the integrated circuit is in the power saving mode, the display controller streams the pixel data from the first memory to the display module at a second data rate that is lower than the first data rate, and the second memory is configured into a memory power-saving mode after the pre-fetching until the second memory is accessed for additional pixel data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.