| 摘要 |
PURPOSE:To attain low power consumption by providing a power supply control section detecting the closing of a transmission switch and starting supply of power voltage, and a signal processing section detecting the supplied power voltage and outputting a power supply consecution signal to the power supply control section. CONSTITUTION:A signal (a) representing that the transmission switch 2 is turned on is fed to the power supply control section 3. The power supply control section 3 uses the signal (a) as a trigger to supply a battery voltage (c) to a signal processing section 4 and a transmission section 5. The signal processing section 4 inputs the battery voltage (c) to start the operation and outputs the power supply consecution signal (b) to the power supply control section 3 before the signal (a) is reset. The power supply control section 3 uses again the signal (b) as a trigger input and supplies the battery voltage (c) continuously. The signal processing section 4 completing the transmission resets the signal (b). Thus, the power supply control section 3 resets the battery voltage (c). |
