| 摘要 |
A laptop computer 53 has an LCD display 542 which is used to display images represented by data-reduced video signals supplied to it from a buffer 52 of a video signal processor (50, 51, 52, 56, 57). The processor is connected to the computer 53 via an SCSI interface having a test adaptor 55, a bus 556 and a device controller 56. The computer is not synchronised with the video. It processes a frame of image data to display the frame, and then requests another frame asynchronously with the video sync. The video signal processor (50, 51, 52, 56, 57) responds to the request by disconnecting from the bus (556) processing the next frame, and reconnecting to the bus to provide the frame synchronously with video frame sync F. Thus the computer becomes effectively synchronised to the video.
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