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US 10,255,739 B1Granted
Method and apparatus for rolling code vehicle access
AssigneeFord Global Technologies, LLC
InventorAli Suleiman
Life of this patent
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Abstract
A system includes a mobile-device processor configured to generate a first code based on a changing variable and a generation schema, both known by a mobile device and a vehicle and display the first code. The vehicle processor is configured to receive input of the first code, generate a second code based on the variable and schema, and grant vehicle access when the first code corresponds to the second code.
Claims20
A system comprising:
- a mobile-device processor configured to:
- generate and display a first code based on a changing variable and a generation scheme, both known by a mobile device and a vehicle, the scheme defining fixed time-intervals for code changing;
- wherein
- a vehicle processor is configured to:
- receive the first code;
- generate a second code based on the variable and scheme;
- and
- grant vehicle access when the first code corresponds to the second code.
5 more elements
A computer-implemented method comprising:
- generating a first code on a mobile device and a second code in a vehicle, both based on a common changing variable and scheme known to both the mobile device and vehicle, the scheme defining fixed time intervals for generating a new code;
- receiving the first code input at the vehicle;
- responsive to the receiving, comparing the first code to the second code;
- and
- granting vehicle access based on the first code corresponding to the second code in a predefined manner.
2 more elements
A computer-implemented method comprising:
- modifying a clock value, synchronized between a vehicle and mobile device, based on a predetermined modification formula known independently to the vehicle and mobile device, to generate a first code on the mobile device and a second code on the vehicle;
- outputting the first code on the mobile device;
- receiving the first code as vehicle input;
- and
- responsive to confirming that the first code matches the second code, granting vehicle access.
2 more elements
Dependencies are inferred from the claim text.