traffic surveillance process and device

Patent 5767794 Issued on June 16, 1998. Estimated Expiration Date:

January 24, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2619402

Traffic sign and improved system for recording vehicle speed
Patent #: 4173010
Issued on: 10/30/1979
Inventor: Hoffmann

Optical rectification apparatus
Patent #: 4199232
Issued on: 04/22/1980
Inventor: Olodort

Method and device for supervising the speed of an object
Patent #: 4214265
Issued on: 07/22/1980
Inventor: Olesen

Time metering device particularly useful as a parking card
Patent #: 4717815
Issued on: 01/05/1988
Inventor: Tomer

Traffic monitoring device
Patent #: 4866438
Issued on: 09/12/1989
Inventor: Knisch

Traffic monitoring device
Patent #: 4988994
Issued on: 01/29/1991
Inventor: Loeven

Traffic enforcement device Patent #: 5515042
Issued on: 05/07/1996
Inventor: Nelson

Inventors

Assignee

Leica Sensortechnik GmbH

Application

No. 578547 filed on 01/24/1996

US Classes:

340/937, With camera340/905, Highway information (e.g., weather, speed limits, etc.)340/936, Speed and overspeed340/942, Photoelectric348/148, Vehicular348/149, Traffic monitoring701/117, Traffic analysis or control of surface vehicle701/119With determination of traffic speed

Examiners

Primary: Hofsass, Jeffery
Assistant: Lieu, Julie

Attorney, Agent or Firm

Foley & Lardner

Foreign Patent References

0 188 694 EP. 07/13/1986
0 312 524 EP. 04/13/1989
1 805 903 DE. 05/13/1969
26 46 636 DE. 04/13/1977
37 16 319 DE. 08/13/1988
39 08 069 DE. 09/13/1990
40 32 459 DE. 04/13/1992

International Class

G08G 001/017

Foreign Application Priority Data

1993-08-06 DE

Abstract

A traffic surveillance system measures a speed of a vehicle within a traffic scene, optically records the traffic scene, and reproduces the traffic scene on a display in synchronism with a display of the measured speed. The system includes a speed sensor which measures the speed of the vehicle within the traffic scene and an electro-optical camera having a recording medium in which video signals representing the traffic scene are stored. The camera is equipped with an audio input and output connected to a soundtrack of the recording medium. The audio input receives modulated signals of the measured speed for storage in the soundtrack in synchronism with the video signals. The measured speed signals and the video signals are combined in a video mixer and reproduced on the display.