TRANSFER DISPLAY SYSTEM FOR MAGNIFIED CONTINUOUS PICTURES

摘要

PURPOSE:To avoid the display of the transfer process of picture data on a screen by using effectively an overlay memory having the display priority to an image memory of a picture display device. CONSTITUTION:The mask data 26 is produced prior to transfer of the picture data and sent to an overlay memory 20 having the display priority to an image memory 18. Thus the data 26 is displayed and the first picture data consisting of high and low-order bits is sent to the memory 18 according to the display states of the data 26. Then the picture data on the memory 18 are displayed with magnification together with the memory 20 kept under a non-display state respectively. The next picture data is synthesized with the data 26 and sent to the memory 20 dept under a non-display state as the synthetic picture data. The display of the memory 18 is switched to the memory 20 when the transfer of the picture data is through. Hereafter these operations are repeated. In such a way, it is possible to avoid display of the transfer process of the picture data on a screen.