PURPOSE: To give a user definite warning so as to prevent the continuous use of the title system for a long time by giving a warning to the user from a warning means when the time measured by a measuring means reaches a prescribed value.
CONSTITUTION: When a power switch is turned on, an internal clock 9 starts time measurement based on a vertical synchronizing signal from a video processor 5 and demonstrates the measured time. The demonstration is performed in such a way that a picture composed of abstract and concrete graphics is scrolled or moved on the screen of a monitor 8 in accordance with a demonstrating pattern program stored in a ROM 3 in advance. Since the picture on the screen of the monitor 8 gradually becomes darker and a guide is displayed bright on the darkened screen and makes movement like gymnastics and, at the same time, this picture displaying system cannot be operated by means of switches 30, etc., when one hour of time has elapsed after the power switch is turned on, the user can easily recognize that the picture displaying system has been continuously used for a long time. Therefore, the continuous use of this system can be prevented.
KUSANO HIROKO
YASUHARA NANAE
MARUSAWA MIYUKI
