| 摘要 |
Video data from a control unit in this video control unit for scanned graphics and character images are placed in a video store via a data interface and address multiplexer. Timing is controlled by a clock generator and a video address counter that also controls the screen display via the sync. generator. Video signals, including character and attribute, i.e. colour information, are passed to a video signal encoder via an attribute gate and character gate and corresp. shift register delay elements. These gates and dely elements in conjunction with the time multiplexed addressing of the video store enable data to be synchronised with subsequent savings of signal lines
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