System for detecting and warning an illegally parked vehicle
US5343237A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1991 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Oct 1, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a system for detecting and warning an illegally parked vehicle a television (TV) camera images a prescribed roadside zone where parking is prohibited at a prescribed time interval. A produced still TV image is stored, and a TV image of a prescribed pattern painted on the roadside without any vehicle is stored as a reference image. The still image is compared with the reference image thereby to produce an image which carries information indicative of the presence of a vehicle in the zone and the vehicle presence information image is stored. The move-off of the vehicle is detected by comparing images of the vehicle presence information storage at a prescribed time interval. The vehicle is warned of illegal parking upon detecting that the vehicle does not move off before expiration of a prescribed time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.