Method and device for supervising the speed of an object
Patent 4214265 Issued on July 22, 1980. Estimated Expiration Date: 
April 14, 1998. 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.
April 14, 1998. 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.Patent References 3532042 3685012 3890462 3890463 InventorApplicationNo. 05/896411 filed on 04/14/1978US Classes:348/149, Traffic monitoring340/937With cameraExaminersPrimary: Britton, Howard W.Attorney, Agent or FirmInternational ClassesG08G 1/04 (20060101)G01P 3/64 (20060101) G01P 3/68 (20060101) Foreign Application Priority Data1975-10-16 SEAbstractA system for supervising the speed of an object, such as a vehicle, relative to a reference point, wherein a TV-camera is utilized. The TV-camera is mounted at the reference point and directed at a certain, preferably right angle to the direction of movement of the object, so that the field of view of the TV-camera includes a measuring distance. The video output signal from the TV-camera is fed to a black level sensor which in turn activates a pulse generator while the image of the object is passing between two given marking lines on the TV-image corresponding to the measuring distance. The pulses thus generated are counted, and the counted number of pulses constitutes a measure of the speed of the object (i.e., inverse proportionality). | |
