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VEHICLE DEVICE CONTROL SYSTEM AND METHOD

  • US 20120179306A1
  • Filed: 01/05/2012
  • Published: 07/12/2012
  • Est. Priority Date: 01/07/2011
  • Status: Active Grant
First Claim
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1. A vehicle device control system comprising:

  • a portable unit carried by a user; and

    a vehicle-side unit mounted in a vehicle for performing bilateral communications with the portable unit,in each of the bilateral communications, the vehicle-side unit transmitting a request signal in a predetermined area around the vehicle and the portable unit transmitting a response signal in response to the request signal of the vehicle-side unit,the vehicle-side unit checking up an identification code included in the response signal received from the portable unit with a pre-stored registration code, andthe vehicle-side unit controlling a vehicle device mounted in the vehicle on condition that a checkup result indicates a successful checkup operation,wherein the vehicle-side unit includes;

    a vehicle-side transmission section for transmitting the request signal to the portable unit;

    a vehicle-side reception section for receiving the response signal from the portable unit; and

    a vehicle-side control section for instructing the vehicle-side transmission section to transmit the request signal at a predetermined transmission interval specific to the vehicle side unit, when the response signal is received from the portable unit by the vehicle-side reception section, andwherein the portable unit is operable with power supply from a battery, and includes;

    a portable-side reception section for receiving the request signal from the vehicle-side unit;

    a portable-side transmission section for transmitting the response signal to the vehicle-side unit;

    a portable-side memory section for storing the transmission interval in the vehicle-side unit; and

    a portable-side control section for instructing the portable-side transmission section to transmit the response signal when the request signal is received by the portable-side reception section, and for instructing the portable-side reception section to take a reception state at a timing of next transmission of the request signal in correspondence to the transmission interval stored in the portable-side memory section.

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