Method to reduce authentication latency in an immobilizer system
First Claim
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1. A method of authenticating an authorization device comprising the steps of:
- a) triggering a search for an authorization device prior to engaging a reader;
b) establishing a communication link between the authorization device and an authorization system;
c) beginning authorization prior to engaging the reader;
d) engaging reader with the authorization device; and
e) allowing authorization responsive to completion of the authorization process begun prior to engaging the reader.
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Abstract
An immobilizer system begins authentication of an identification device in response to an external triggering event. The external triggering event occurs prior to engagement with a reader module within the vehicle. Authorization commences prior to engagement to the reader module and continues after engagement with the reader module to reduce perceived authentication wait time.
17 Citations
16 Claims
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1. A method of authenticating an authorization device comprising the steps of:
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a) triggering a search for an authorization device prior to engaging a reader;
b) establishing a communication link between the authorization device and an authorization system;
c) beginning authorization prior to engaging the reader;
d) engaging reader with the authorization device; and
e) allowing authorization responsive to completion of the authorization process begun prior to engaging the reader. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16)
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9. A method of authenticating an identification device for a vehicle immobilizer system, said method comprising the steps of:
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a) triggering communication between the vehicle immobilizer system and an identification device without a reader module of the vehicle immobilizer system;
b) authenticating the identification device; and
c) authorizing operation of the vehicle once the identification device is placed in communication with the reader module upon completion of the authentication step begun prior to communication between the reader module and the identification device. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification