Method for determination of pre-authorization engine operation time for a vehicle theft deterrent system
US7222006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 18, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus are provided for determining the duration a motor vehicle engine may operate while operator authorization is verified in response to an ignition request. In one embodiment the method includes the steps of decrementing a pre-authorization timer from a first predetermined time limit and a maximum authorization timer from a second predetermined time limit in response to the ignition request. Also upon receipt of the ignition request an authorization process is initiated. Decrementing of the pre-authorization timer is halted in response to active operation of the starter motor of the motor vehicle, and operation of the motor vehicle is inhibited if either the pre-authorization timer or the maximum authorization timer decrements to zero before completion of the authorization operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.