| 摘要 |
PURPOSE: To prevent the malfunction of a receiver by adding a reader code to the head part of the normal control code signal of remote control. CONSTITUTION: By a key matrix 2, when the button of a transmitter is pushed, the pushed button is inputted to the input port 3 of an IC 1 for the remote control. The IC 1 for the remote control is provided with a clock 6 used for control and a ROM 4 for determining an operation beforehand and a CPU 7 stores the data of the input port 3 in a RAM 5 and analyzes and discriminates them. The CPU 7 searches the prescribed reader code from the ROM 4 so as to instruct a decoded result and sets it to a register 8 and the reader code is set to an output port 9 further. A transmission code set to the output port 9 is outputted from the IC 1 by the hardware circuit of the CPU 7 and operates a transistor 10. Then, by the ON/OFF of the transistor 10, signals for controlling the receiver are transmitted from the transmitter. |
