| 摘要 |
<p>PURPOSE:To securely display a message which needs to be displayed as to the data processor having the subordinate screen display function which selects and displays display data, expanded in >=2 display memories, on one display device. CONSTITUTION:The data processor is equipped with a main screen display control means 12 which expands main screen display data, a subordinate screen display control means 13 which expands subordinate screen display data, a main screen control means 14 which performs an expanding processing for the main screen display data, a subordinate screen control means 15 which performs an expanding processing for the subordinate screen display data, and a switching means 16 which selects the main screen display data in main screen display mode and the subordinate screen display data in subordinate screen display mode and outputs the data to the display device 2, and further equipped with a forcing means 18 which performs control so that the switching means 16 selects the main screen display data in the subordinate screen display mode and a registration means 19 which registers the entry position of the forcing means 18 in the main screen control means 14; and the main screen control means 14 calls the forcing means 18 when the main screen display data are expanded.</p> |
