On-vehicle device network system and power supply control apparatus

A network system of on-vehicle electric devices in which a central control unit mounted on a vehicle and a plurality of on-vehicle electric devices are connected, the network system comprising:

• one transmitter-receiver mounted on the vehicle and including a plurality of radio leakage devices for transmitting/receiving signals in a wireless manner, the plurality of radio leakage devices being connected in series with the central control unit through a cable to be provided in vicinities of positions of the on-vehicle electric devices, and generating radio waves corresponding to the signals in the vicinities of the positions of the on-vehicle electric devices when signals are transmitted from the central control unit to the on-vehicle electric devices;
• and
• a plurality of electric device controllers provided in one-to-one correspondence to the plurality of on-vehicle electric devices, each of the electric device controllers including an antenna for transmitting/receiving therethrough a signal to/from the transmitter-receiver in a wireless manner so as to control corresponding one of the on-vehicle electric devices on the basis of the received signal or so as to process a signal generated by the corresponding one of the on-vehicle electric devices to transmit the processed signal to the transmitter-receiver.

A power supply controller, which is connected in one-to-one correspondence to an electric device, for changing ON/OFF of supply of an electric power to the electric device in accordance with a control signal issued from a central control unit, wherein, in a case that the power supply receives a signal from the central control unit, a WARD signal, an identification signal of the electric device as an object of control and a control signal used to control the electric device are discriminated from the received signal and that the electric device specified with the identification signal is the connected electric device, then the power supply outputs a reset signal used to reset the electric device to be controlled before outputting predetermined control information based on the control signal.