Vehicle immobiliser/alarm
First Claim
1. A vehicle security system including a vehicle security device arranged to exert control over operation of the vehicle in response to a coded key, said coded key and said security device communicating using a data string of a predetermined format, wherein said security device has a supervisor access level responsive to supervisor coded keys and a user access level responsive to user coded keys, wherein said security device is programmable to be responsive to one or more said supervisor coded keys and/or one or more said user coded keys, or one or more of said user coded keys only.
1 Assignment
0 Petitions
Accused Products
Abstract
A security system having security devices with hierarchical levels of access provided to coded keys which may be hand held transmitter units, is disclosed. The levels of access are master which is restricted to the manufacturer, seller and installer, supervisor which can be allocated to a site, and user which is usually specific to one security device only. The security devices can be programmed to be responsive to all of the supervisor coded keys and/or user coded keys, or a user coded key only. The security system can be used in a method of securing all vehicles at a car sales, where all of the vehicles can have their security devices programmed to be responsive to supervisor coded keys specific to the car sales site. When a vehicle is sold, its security device can be reprogrammed to be responsive to specific user coded keys only.
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Citations
37 Claims
- 1. A vehicle security system including a vehicle security device arranged to exert control over operation of the vehicle in response to a coded key, said coded key and said security device communicating using a data string of a predetermined format, wherein said security device has a supervisor access level responsive to supervisor coded keys and a user access level responsive to user coded keys, wherein said security device is programmable to be responsive to one or more said supervisor coded keys and/or one or more said user coded keys, or one or more of said user coded keys only.
- 29. A vehicle security system including a vehicle security device arranged to exert control over operation of the vehicle in response to a coded key, said coded key and said security device communicating using a data string of a predetermined format, wherein said data string includes a predetermined portion thereof having settable values, wherein said settable values when within a range of first predetermined values correspond to user codes assigned to user coded keys for said security device, and said settable values when within a range of second predetermined values correspond to supervisor codes assigned to supervisor coded keys for said security device, wherein said security device is programmable to be responsive to one or more said supervisor coded keys and/or one or more said user coded keys, or one or more of said user coded keys only.
Specification