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US 7,679,486 B2Granted
In-vehicle antitheft device and central authentication device
AssigneeToyota Hidosha Kabushiki Kaisha
InventorHiroki Okada
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AssigneeToyota Hidosha Kabushiki Kaisha
InventorHiroki Okada
Estimating the term…
An in-vehicle antitheft device and a central authentication device can improve a convenience of use of a user while maintaining a high security, which is a merit of a central-type authentication system. A use of a first group of vehicle functions, which has not been permitted, is permitted when an authentication by an in-vehicle local collation part is completed in agreement. A request signal of requesting a user authentication is transmitted to a central authentication device through a communication line. A use of a second group of vehicle functions, which have note been permitted, is permitted when the user authentication is completed in agreement in the central authentication device.
An in-vehicle antitheft device provided in a vehicle, comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Means to switch the anti-theft system on or off: using electronic identifiers containing a code not memorised by the user
Operating on vehicle systems or fittings, e.g. on doors, seats or windscreens: operating on the propulsion system, e.g. engine or drive motor
Vehicle fittings and parts
About 2 years of term left · ends 15 Oct 2028 (estimated)
1. Field of the Invention
The present invention generally relates to vehicle antitheft techniques and, more particularly, to a vehicle antitheft technique using a central authentication device remote from vehicles.
2. Description of the Related Art
FIG. 1 is an illustration showing a vehicle antitheft system using an in-vehicle antitheft device and a central authentication device according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a process of shifting from an unpermission mode to an authentic permission mode in the first embodiment;
FIG. 3 is an illustration showing a vehicle antitheft system using an in-vehicle antitheft device and a central authentication device according to a second embodiment of the present invention;
A description will now be given, with reference to the drawings, of embodiments of the present invention.
FIG. 1 is an illustration showing a structure of a vehicle antitheft system using an in-vehicle antitheft device and a central authentication device according to a first embodiment of the present invention. The in-vehicle antitheft device 10 is provided to a vehicle. The vehicle antitheft device 10 comprises a local collation part 11, an authentication data acquisition part 12, a radio part 13 and a control part 14.
The local collation part 11 serves as an in-vehicle authentication device. When unlocking a door lock or starting an engine, the local collation part 11 performs an authentication (hereinafter, referred to as a local authentication) by performing an ID collation electrically with a mechanical key or a smart key using a radio wave so as to check whether the key is a correct key for the vehicle. Then, the local collation part 11 sends an authentication result of the local authentication to the control part 14 mentioned later.