Security device for vehicle
US6401207B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1998 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A security device for vehicle disclosed is of a type generating a seed that is used suitably in order to generate a key by being encoded and that is decreased in regularity. Namely, the security device for vehicle according to the present invention has a construction that generates from vehicle control data the seed used for generating an authentication key on the vehicle side and a key on the user side by being encoded. By such construction, the seed is generated from the vehicle control data concerning the constituent elements of the vehicle that are kept in a state of operation. Since the vehicle control data itself is a type that momentarily changes in correspondence with the state of operation of the constituent elements of the vehicle, the generated seed exhibits substantially no regularity thereby becoming a very good kind of random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.