| 摘要 |
<p>PURPOSE:To increase the display speed at the time of image plane update by taking out only output data which are commanded by a window control means preferentially by a window accelerating means and passing the data to a data processing means. CONSTITUTION:The window display accelerating means 10 passes only the output data text which is commanded by the window control means 5a preferentially to the data processing means 3. Then when all the output data texts are passed completely, a display start command is supplied to a window control part 5a immediately and then the output data texts in a window area are passed to the data processing means 3. Therefore, only the display data in the window area can be sent out to a view port memory first without waiting for the completion of the update of the whole virtual image plane memory. Consequently, the display speed at the time of the image plane update can be increased.</p> |
