System of notification of commonly displayed content on predetermined displays using only reference numerals which are in advance attached to images

摘要

An image control circuit of one terminal apparatus reads image data corresponding to a designated reference numeral from a display content storage circuit and displays this on a monitor device and, at the same time, transmits the data indicating the reference numeral to another terminal apparatus via a communication line. An I/F circuit of the other terminal apparatus receives the reference numeral sent from the first terminal apparatus side nd outputs this to its image control circuit. The image control circuit of the other terminal apparatus stores this data in the display content storage circuit and, at the same time, reads the reference numeral and the image data corresponding to this reference numeral from the display content storage circuit and displays the same in a predetermined part of the screen of the monitor device.