| 摘要 |
PURPOSE:To make a switching operating simple by providing a common operat ing unit, an audio unit and a display unit for plural source units such as units for a vehicle and switching the contents of display of a display unit automati cally to display the contents on the operated unit. CONSTITUTION:When the deck selector key of a combined use operation button section 14 in an operating unit 1 is operated, an operation command generating circuit 15 prepares operation on command to a deck unit 3, and at the same time, sends a signal to a picture switching command generating circuit 12. Picture switching command is sent from the picture switching command generating circuit 12 to a display picture switching command decoder 26 through shift registers 13, 25 and decoded to select a display data buffer 22. By this selection, display data from the deck unit 3 is sent to a display unit 21, The operation command generating circuit 15 makes the picture switching command generating circuit 12 send out picture switching command and then send out command which indicated that the operation unit is a deck to an audio unit 5 through the shift register 13. |
