| 摘要 |
A method and apparatus locks a plurality of display synchronization signals, such as horizontal synchronization signals and a vertical synchronization signals, from a plurality of display output devices, such as a plurality of graphics processors. The method and apparatus digitally adjusts a vertical synchronization signal associated with a first display output device, with respect to a vertical synchronization signal associated with a second graphic output device until a crossover is detected between the first and second vertical synchronization signals. This provides a type of coarse synchronization. In response to detection of the first crossover, the method and apparatus digitally adjusts a horizontal synchronization signal associated with the first display output device with respect to a horizontal synchronization signal associated with the second display device to align the synchronization signals. The adjustment of the horizontal synchronization signals provides a fine synchronization adjustment.
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