| 摘要 |
PURPOSE:To change partial display content between terminals by setting >=1 transmission/receiving area to a screen buffer of a terminal device, setting control information representing a transmitted address and a destination to each area and controlling communication between the terminal devices. CONSTITUTION:The terminal device 2 is connected to the terminal controller 1, and the controllers 1 are connected by a communication line. Each terminal controller 1 has a specific address X and each terminal device 2 has a specific address Y. Each terminal device 2 has a screen buffer for a CRT display device and a memory area of each screen buffer is divided into plural numbers. A destination address is set to the head of the divided memory in case of a transmission message area corresponding to each area and a transmitted address is set in case of a receiving message area. The controller 1 controls the transmission/ receiving between the terminal device 2 and the communication line 3 based on the set address in the unit of message areas. |
