Monitor television apparatus

A monitor television apparatus equipped with a plurality of input terminals for audio/visual signals and adapted to serve as an output apparatus electively for a plurality of audio/visual appliances by switching the input terminals, said apparatus comprising:

• command signal detection means for detecting command signals relative to the audio/visual appliances connected to said input terminals and identifying the contents of the commands;
• memory means for storing in a registration area command signals relative to certain audio/visual appliances and data of input terminals, to which said audio/visual appliances are connected, in a mutually corresponding relation, and further for storing in a group storage area of said memory means a plurality of specific command signals previously detected by said command signal detection means;
• selected-input detection means for detecting the input terminals selected in accordance with the input terminal switching operation;
• registration control means for storing the command signals detected by said command signal detection means and data corresponding to the input terminals detected by said selected-input detection means in said memory means;
• and
• input selection control means for controlling said switching of the input terminals, so that when any command signal already registered in said memory means by said registration control means is detected by said command signal detection means the input terminals to which the audio/visual appliance corresponding to the detected command signal is connected are grasped by reading out the registered data from said registration area of memory means and the input terminal switching operation is so controlled as to select the relevant input terminals, and when a command signal not registered in said registration area of said memory means by said registration control means is detected if at least one of the command signals was previously registered in said group storage area of said memory means by said registration control means the input terminal switching operation is controlled to select the relevant input terminals in response to said previously registered command signals.