Patent ID: 7049938

Claim:
An intra-vehicle LAN system combining electric power supply, comprising: a main controller having control signal generation means for generating a control signal containing an ID used to control each of on-vehicle electric equipments and outputting said control signal to an electric power supply line through which electric power is supplied to each of said electric equipments; and an electric equipment control unit being provided between said electric power supply line and each of said electric equipments to detect said control signal containing said ID transmitted through said electric power supply line and to control each of said electric equipments, wherein said electric equipment control unit comprises: signal detection means for detecting said control signal transmitted through said electric power supply line; a control switch adapted to control each of said electric equipments in accordance with said detected control signal; detection means for detecting a control state of each of said electric equipments; and state signal generation means for generating a state signal corresponding to said detected control state of each of said electric equipments and outputting said state signal to said electric power supply line towards a side of said main controller.