A low-power high-speed asynchronous inductive-coupling transmission and reception technology is provided, in which a current signal of a single pulse is made to flow through a transmitting coil, and a voltage signal of a double pulse induced in an inductively-coupled receiving coil can be received asynchronously. A transmitting circuit for performing non-contact proximity communication adopts a configuration in which current flows through a first coil in a first direction for each change of a logical value of transmit data. A receiving circuit connected to a second coil coupled inductively to the first coil employs a comparator which determines an induced voltage of a double pulse induced in the second coil by current in the first direction and outputs a unipolar single pulse signal. Whenever the single pulse signal outputted by the comparator is inputted, the receiving circuit inverts the output in a sequential circuit and reproduces receive data.