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US 6,445,282 B1Granted
Theft prevention system for motor vehicles
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorArmin Wagner
Life of this patent
Estimating the term…
Abstract
A process for preventing motor vehicle theft in which, while the anti-theft device is activated, a drive control device is switched off, the anti-theft device automatically transmits during each deactivating operation a transmittal code to the drive control device and the drive control device will be switched back on only when the transmitted transmittal code corresponds to a comparison code made available in the drive control device.
Claims21
A process for preventing motor vehicle theft, comprising:
- performing an activating operation for an anti-theft device;
- switching off a drive control device when the anti-theft device is activated in the activating operation;
- performing a deactivating operation of the anti-theft device;
- automatically generating and transmitting from the anti-theft device during the deactivating operation, a transmittal code to the drive control device, said anti-theft device and said drive control device being internally located in the motor vehicle;
- and
- switching the drive control device back on again only when the transmitted transmittal code corresponds to a comparison code in the drive control device;
- further comprising the step of automatically generating and transmitting from the anti-theft device the comparison code to the drive control device before performing the deactivating operation for the anti-theft device;
- and
- further comprising the step of changing the comparison code during each activating operation with respect to a previous transmittal code.
6 more elements
A process for preventing motor vehicle theft, comprising:
- performing an activating operation for an anti-theft device;
- switching off a drive control device when the anti-theft device is activated in the activating operation;
- performing a deactivating operation of the anti-theft device wherein the anti-theft device is deactivated during the deactivating operation by a wireless code signal;
- automatically generating and transmitting a transmittal code from the anti-theft device to the drive control device during the deactivating operation, said anti-theft device and said drive control device being integral with and formed within the motor vehicle such that the anti-theft device and drive control device are at least substantially inaccessible from the passenger compartment of the motor vehicle;
- and
- switching the drive control device back on again only when the transmitted transmittal code corresponds to a comparison code in the drive control device.
3 more elements
A process for preventing motor vehicle theft, comprising the acts of:
- (i) activating an anti-theft device which then disables a drive control device, thereby rendering a motor vehicle inoperable, wherein the anti-theft device is activated by a wireless code signal;
- (ii) later deactivating the anti-theft device, in order to enable the drive control device, thereby rendering the motor vehicle operable;
- wherein the anti-theft device upon deactivation automatically generates and transmits a transmittal code to the drive control device;
- wherein the drive control device is enabled only if the transmitted transmittal code corresponds to a comparison code in the drive control device;
- and
- both the anti-theft device and the drive control device are integrated within a motor vehicle and are at least substantially inaccessible from the passenger compartment of the motor vehicle.
3 more elements
A process for preventing motor vehicle theft, comprising:
- performing an keyless activating operation for an anti-theft device;
- switching off a drive control device when the anti-theft device is activated in the activating operation;
- performing a keyless deactivating operation of the anti-theft device;
- automatically generating and transmitting from the anti-theft device during the deactivating operation, a transmittal code to the drive control device, said anti-theft device and said drive control device being internally located in the motor vehicle;
- and
- switching the drive control device back on again only when the transmitted transmittal code corresponds to a comparison code in the drive control device.
3 more elements
Dependencies are inferred from the claim text.