| 摘要 |
PURPOSE: To surely notify disconnection to a user by temporarily switching a display screen to a multi-screen and rewriting the partial screen in a single color when a video telephone system is disconnected against the user's intention. CONSTITUTION: When a called party stop key is depressed while transmission and reception processings are performed, the DSP 81 of a modem part 8 transmits this information to a CPU 71. When the called party hangs up a receiver, the CPU 71 judges it as the non-existence of a carrier. The CPU 71 divides the screen through an image input control circuit 32, makes the screen a multi-screen, writes the data of a single color in the prescribed address of a RAM 32, transfers the data to the address of the reception simple image of a RAM 42 and displays the single color on a simple image display location via an analog LSI 31 and a video circuit 2. At the same time, a video processing part 3 is switched to an analog telephone mode and a video telephone is terminated. |
