| 摘要 |
PURPOSE:To attain channel selection with good operability by providing the 1st address storing a channel during channel selection and the 2nd address selected previously to a channel memory and replacing the signal to the 1st and the 2nd address every time a control signal is applied. CONSTITUTION:When a switch 2 of a key matrix 37 is operated, address information of two channels is discriminated by a microcomputer 39, applied to a CMOS memory 40 where the channel selecting information of two channels is read out and the 2 channels are selected. Further, when the operation of the matrix 37 is detected by the computer 39, a signal of one channel stored in an address c1 of the memory 39c is transferred to the 2nd address c2 and stored and a new signal of the two channel is stored in the address 1. When the viewer operates a switch 16, the computer 39 is detected and the signal of the address c1 and the signal of the address c2 of the memory 39 are replaced mutually. |
