| 摘要 |
<p>PURPOSE:To enable an operator to record screen data, displayed on a CRT display unit in real time, continuously without paying attention to the operation of a hard copying device by providing an FIFO memory, an input control part, and an output control part. CONSTITUTION:The FIFO memory 72 stores and outputs screen data of plural pictures in order and the input control part 71 saves screen data that a CRT control part 4 requests in the FIFO memory 72, so that the recording operation of the CRT control part 4 is completed. The output control part 73, on the other hand, outputs the screen data from the FIFO memory 71 to the hard copying device 8 in order independently of the input control part 71. Consequently, the interruption time of screen data on the CRT display unit 5 by the CRT control part 4 in the recording operation is shortened to update the screen data displayed on the CRT display unit 5 in real time. Further, the CRT control part 4 needs not to wait for the completion of the hard copying device 8 and continuous recording is enabled.</p> |
