Data storage medium

摘要

A first full-wave rectifier circuit generates a power supply voltage from a received modulated radio wave signal and a second full-wave rectifier circuit binarizes the voltage to obtain a binary signal. A continuous clock signal is generated from the binary signal. The modulated radio wave signal is also binarized and demodulated using the continuous clock signal. This demodulation is performed simultaneously with the generation of the power supply voltage. A command can be received continuously and data can be read or written continuously. Therefore, the reception of power or the reception/transmission of data need not be performed intermittently, but rather a large amount of data can be received or transmitted continuously at high speed.