Vehicle equipment control system and method
First Claim
1. A vehicle equipment control system comprising:
- a portable unit that transmits a response signal including an ID code in response to a request signal; and
an in-vehicle unit that transmits the request signal, receives the response signal from the portable unit, performs a comparison between the ID code included in the response signal and a pre-registered code, and controls vehicle equipment in accordance with a comparison result, wherein the in-vehicle unit comprises;
a receiver that receives the response signal from the portable unit;
an inside transmitter that, by using a compartment of a vehicle as a communication area for communication with the portable unit, transmits the request signal toward the compartment;
a trigger switch that is proved in a vehicle door and that provides an instruction for locking of the vehicle door;
communication area varying means that, in a case that the trigger switch is not operated, sets the communication area for the communication between the inside transmitter and the portable unit to be relatively large in comparison with a case that the trigger switch has been operated; and
lock control means that locks the vehicle door in accordance with an event where the response signal responding to the request signal transmitted from the inside transmitter is not received in the communication area set by the communication area varying means.
1 Assignment
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Accused Products
Abstract
A vehicle equipment control system locks vehicle doors by any one of auto-lock and trigger lock systems. In the auto-lock system, a wide communication area is set that covers an entire vehicle compartment is set. In the trigger lock system, a narrow communication area is set that disables the communication with a portable unit carried by a user near a vehicle. When no response signal is received from the portable unit in the respective communication areas, the respective vehicle doors are locked. Accordingly, even when any one of the auto-lock and trigger lock systems is used, the portable unit is prevented from being left in the compartment, and the respective vehicle doors can be locked.
29 Citations
13 Claims
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1. A vehicle equipment control system comprising:
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a portable unit that transmits a response signal including an ID code in response to a request signal; and
an in-vehicle unit that transmits the request signal, receives the response signal from the portable unit, performs a comparison between the ID code included in the response signal and a pre-registered code, and controls vehicle equipment in accordance with a comparison result, wherein the in-vehicle unit comprises;
a receiver that receives the response signal from the portable unit;
an inside transmitter that, by using a compartment of a vehicle as a communication area for communication with the portable unit, transmits the request signal toward the compartment;
a trigger switch that is proved in a vehicle door and that provides an instruction for locking of the vehicle door;
communication area varying means that, in a case that the trigger switch is not operated, sets the communication area for the communication between the inside transmitter and the portable unit to be relatively large in comparison with a case that the trigger switch has been operated; and
lock control means that locks the vehicle door in accordance with an event where the response signal responding to the request signal transmitted from the inside transmitter is not received in the communication area set by the communication area varying means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A vehicle equipment control method comprising:
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transmitting a request signal from an inside transmitter provided in a vehicle compartment when an opening/closing operation of a vehicle door is detected, the request signal having a predetermined output level with which a portable unit is capable of receiving the request signal outside the compartment;
transmitting the request signal from the inside transmitter at an output level lower than the predetermined output level so that the portable unit is capable of receiving the request signal only in a vehicle compartment, when a locking operation of the vehicle door is detected; and
transmitting another request signal from an outside transmitter provided outside the vehicle when the portable unit has transmitted no response signal to the request signal transmitted in response to the locking operation; and
controlling locking of the vehicle door based on a response signal transmitted from the portable unit.
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Specification