| 摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption by measuring a power of a reproduction output of each finger and total power of them, detecting an error of output data of a composing device and turning on/off a power supply of each finger based on the measurement result. SOLUTION: A finger 4 is made up of a PN code generating section 5, a synchronization acquisition tracing section 6, an integration device 8 and a voltage control clock generator 7, the PN code generating section 5 outputs the same PN code as the PN code of a transmitter at the same speed, the synchronization acquisition tracing section 6 takes synchronization with a timing of the PN code of the received signal and conducts inverse spread while tracing the timing and outputs an inverse spread output signal. A voltage control block VCC 7 supplies a clock signal to the PN code generating section 5 and the phase of the clock is controlled by an output voltage of the synchronization acquisition tracing section 6. The integration device 8 integrates the reception signal inversely spread outputted from the synchronization acquisition tracing section 6 for a prescribed time to recover data. |
