| 摘要 |
<p>A method of displaying a multiwindow picture, wherein the picture data of window picture are stored in a window buffer (13), a relationship between a position on a CRT (18) of a reference point (e.g., left upper corner) of window picture and a storage position in a window buffer (13) which stores picture data on said reference position is stored in a first memory (14) as a window parameter for every window picture, and data for specifying the window picture to be displayed on each pixel is stored as a visible map in a second memory (15) which is provided to correspond to each of the pixels of the picture. A multiwindow picture is displaced through the steps of monitoring the present position of beam by horizontal and vertical counters (11, 12), finding out the data from the visible map to specify the window picture displayed on a pixel on which the beam is now located, finding out a window parameter corresponding to the above window picture from the first memory (14), forming an address in the window buffer (13) from the present position of the beam and the above window parameter, reading the picture data of the window picture from the above address and displaying it on the CRT (18).</p> |
