| 摘要 |
<p>PROBLEM TO BE SOLVED: To send signals with a simple configuration and a simple operation and to prevent mis-operation, regardless of whether or not the user intends to send the signals by sending 1st and 2nd signals through the operation of a single button. SOLUTION: The transmitter 20 is provided with a switch 11 to start processing or signal transmission, an LED 24 to indicate a timing of switch operation and a buzzer 15 to inform it to the user that a signal is transmitted. First and 2nd signals, able to be sent by a transmission section 27, are very weak radio waves with the same frequency but different codes. Data between signals and corresponding codes are stored in a memory 23. Then a CPU 21 reads a code corresponding to a signal from the memory 23 and gives an instruction of transmission of the code signal to the transmission section 27. Thus, the 1st and 2nd signals are sent through the operation of one transmission switch. Consequently, the operation of signal transmission of the transmitter 20 is simplified, and the opportunity of mis-operation is reduced.</p> |
