Vehicle antitheft device and control method of a vehicle
First Claim
1. A vehicle antitheft system mounted to a vehicle, the system comprising:
- a remote start device to remotely start an engine, further comprising a start signal radio-transmitter and an in-vehicle radio-receiver;
a vehicle anti-theft device operatively coupled tothe remote start device,a starter-motor relay,a sensor to detect attempted theft of the vehicle; and
logic means for disabling the anti-theft device as a function of sensor outputs from the sensor before an engine start when said start signal is received by said in-vehicle radio-receiver.
1 Assignment
0 Petitions
Accused Products
Abstract
When a remote start of an engine using a predetermined transmitter is performed, a security regarding theft of a vehicle can be prevented form being significantly deteriorated. The vehicle has a remote engine starter for remotely start an engine and a vehicle antitheft device for activating an alarm when there is a possibility of occurrence of vehicle theft. The remote engine starter and the vehicle antitheft device are connected to each other through a communication line. In a case where an engine start signal is supplied from the transmitter, the remote engine starter is caused to supply a start signal to the vehicle antitheft device through the communication line before causing a contact point closing signal to be supplied to an ignition relay. When the start signal is supplied to the vehicle antitheft device, preventing apparatus, only the security function regarding conditions of no-insertion of an ignition key and an ignition ON is cancelled to be an unvigilant state, and the security function regarding other conditions is maintained to be a vigilant state.
14 Citations
11 Claims
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1. A vehicle antitheft system mounted to a vehicle, the system comprising:
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a remote start device to remotely start an engine, further comprising a start signal radio-transmitter and an in-vehicle radio-receiver; a vehicle anti-theft device operatively coupled to the remote start device, a starter-motor relay, a sensor to detect attempted theft of the vehicle; and logic means for disabling the anti-theft device as a function of sensor outputs from the sensor before an engine start when said start signal is received by said in-vehicle radio-receiver. - View Dependent Claims (2, 3, 8, 9)
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4. A vehicle antitheft system mounted to a vehicle, the system comprising:
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a remote start device to remotely start an engine, further comprising a start signal radio-transmitter and an in-vehicle radio-receiver; a vehicle anti-theft device operatively coupled to the remote start device, a starter-motor relay, a sensor to detect attempted theft of the vehicle; and logic means for disabling the anti-theft device as a function of sensor outputs from the sensor for a predetermined time period after an occurrence of the attempted theft of the vehicle. - View Dependent Claims (5, 10, 11)
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6. A control method of a vehicle equipped with a remote start device for starting a vehicle engine when a start signal radio-transmitted from a radio-transmitter is received by an in-vehicle radio-receiver and an antitheft device for preventing theft of the vehicle, the method comprising:
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a first step of stopping a theft preventing function by said antitheft device when said start signal is received by said in-vehicle radio-receiver; and a second step of starting the vehicle engine by said remote start device after the antitheft function is stopped by said antitheft device. - View Dependent Claims (7)
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Specification