DISPLAY REFRESH
First Claim
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1. A computer-implemented method, comprising:
- refreshing a flat-panel display, wherein the refreshing includes,determining whether one region of a plurality of regions in a frame buffer has been modified, wherein the frame buffer comprises information to be displayed on the flat-panel display, wherein the determining includes using an entry for the one region in a storage buffer, and wherein each region includes a plurality of pixels; and
after the one region has been modified, copying only the one modified region from the frame buffer to the flat-panel display.
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Abstract
A method, apparatus, and signal-bearing medium for sending to a display device only those regions of the display screen that change. A frame buffer is divided into tiles, which may be composed of one or more regions, and data in the frame buffer represents pixels on the display screen. When data representing a pixel is modified in the frame buffer, the region or tile associated with the pixel is marked as dirty, and those tiles or regions that are dirty in the frame buffer are written to the display.
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Citations
15 Claims
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1. A computer-implemented method, comprising:
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refreshing a flat-panel display, wherein the refreshing includes, determining whether one region of a plurality of regions in a frame buffer has been modified, wherein the frame buffer comprises information to be displayed on the flat-panel display, wherein the determining includes using an entry for the one region in a storage buffer, and wherein each region includes a plurality of pixels; and after the one region has been modified, copying only the one modified region from the frame buffer to the flat-panel display. - View Dependent Claims (2, 3, 4, 5)
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6. A display apparatus comprising:
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a frame buffer in a memory, the frame buffer including a plurality of regions including information for display; a storage buffer including entries associated with the plurality of regions of a plurality of tiles of the frame buffer, wherein each region includes a plurality of pixels; scan-out logic executable by a processor of the display apparatus to refresh the display, the scan-out logic to determine whether one region of the plurality of regions in a tile of the frame buffer has been modified, the determination to use data stored in at least one of the entries of the storage buffer, and if the one region has been modified, the scan-out logic to copy only the corresponding tile of the modified region from the frame buffer to the display. - View Dependent Claims (7, 8, 9)
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10. A display device comprising:
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an LCD display; a processor; a memory unit coupled to the processor, the memory unit including, a frame buffer to include a plurality of tiles, each tile to include a plurality of regions, each region to include information for display on the LCD display; a storage buffer to include entries associated with the plurality of tiles of the frame buffer; scan-out logic executable by the processor to make determinations about whether the regions of tiles in the frame buffer have been modified, the determinations to use data stored in the entries of the storage buffer, and for regions that have been modified, the scan-out logic to copy the modified tiles from the frame buffer to the LCD display. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification