Motion detection circuit
Patent 4884136 Issued on November 28, 1989. Estimated Expiration Date: 
September 28, 2008. 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.
September 28, 2008. 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 ReferencesMethod and apparatus for detecting the motion of image in a television signal Picture signal converting device Patent #: 4785351 InventorsAssigneeApplicationNo. 250160 filed on 09/28/1988US Classes:348/701, Specified processing of frame or field difference signal (e.g., noise reduction, key signal spreading)348/392.1Sub-Nyquist samplingExaminersPrimary: Britton, Howard W.Attorney, Agent or FirmInternational ClassH04N 005/91Foreign Application Priority Data1987-10-02 JPAbstractThe motion detection circuit is so constructed that an interframe difference signal is passed through a horizontal direction LPF and a vertical direction LPF in cascade connection, and the interframe difference signal thus obtained is divided by the value obtained by mixing an edge signal of an image and the image level signal of the image by a mixing circuit, thus providing a motion signal. | |
