Method and apparatus for photographing traffic in an intersection
US6373402B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jun 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus of the invention includes a device for triggering a camera to photograph a vehicle within a traffic intersection, where the triggering of the camera is dependent on the speed of the vehicle before entering the intersection and may also be dependent on presence information. The device includes a sensor system (or “sensor array”) to transmit signals corresponding to a moving vehicle and a control system for processing the signals and triggering the camera. The signals preferably include “position signals” from which a transit time can be calculated, and “presence signals,” from which presence information can be obtained, particularly the location of the rear of the vehicle or the location of the rear wheels of the vehicle. A trigger time for taking a picture of the vehicle may be calculated from the transit time. A method of the invention includes the step of transmitting signals to a control system in response to the vehicle passing over a first traffic sensor and corresponding to the speed of the vehicle. The method may also include the steps of transmitting presence signals to the control system, preferably corresponding to the pres…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.