Patent ID: 7952472

Claim:
An in-vehicle device for a vehicular combined control system, comprising: first control means configured for a smart entry system and to conduct radio communication with a portable device carried by a user of a vehicle to conduct authentication required to permit execution of predetermined controls in the vehicle; second control means configured for a tire pressure monitoring system and to conduct radio communication with tire pressure detecting means thereby to acquire information related to the conditions of the tires from the detecting means; and receiving means configured to switch over any one of a first operation mode for receiving information that is transmitted from the portable device to output the information to the first control means, and a second operation mode for receiving the information that is transmitted from the detecting means to output the information to the second control means, wherein the receiving means is configured to switch over to the first operation mode when an output signal from the first control means turns on irrespective of ON/OFF condition of an ignition switch of the vehicle, and switch over to the second operation mode when the ignition switch of the vehicle is ON and the output signal from the first control means turns off, wherein the first control means is configured to turn on the output signal intermittently or based on a given trigger, and input information from the portable device which is output from the receiving means when the output signal turns on, wherein the second control means inputs the information from the detecting means which is output from the receiving means, when the ignition switch of the vehicle is ON and the output signal from the first control means is OFF, and wherein the receiving means is configured to stop operation, when the ignition switch of the vehicle turns off and the output signal from the first control means turns off.