Vehicle collision alert system
US5355118A · kind A · utility
582Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1992 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Jul 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/93271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for deciding an excessive approach of a vehicle to an object in front of the vehicle. The excessive approach decision apparatus comprises a normalized time rate of change detector for determining a normalized time rate of change of a visual angle for the object as viewed from the vehicle. An excessive approach is indicated based upon the determined normalized time rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.