| 摘要 |
PURPOSE:To reduce a load of a communication network, and prevent the deterioration of the working efficiency by changing control data and display data according to changing indication by key operation, and storing respective data on control, display and a digit attribute. CONSTITUTION:A virtual image screen control part 3 analyzes image screen data from a host computer 1, and resolves it into control data such as cursor position data, display data and digit attribute data, and divides the image screen data into blocks in a unit of the display image screen size, and adds it to the control data, and stores it in a virtual image screen control data file 6. The display data is stored in a virtual image screen data file 7, and the digit attribute data is stored in a virtual attribute data file 8, respectively. The virtual image screen control part 3 reads out cursor position data and a block range in which it exists from the file 6, and reads out data shown by the block range from the files 7 and 8, and creates image screen display data in an initial condition, and controls changing operation or the like of a display 10 according to key operation. |
