Motion detecting circuit utilizing inter-frame difference signals of successive fields
Apparatus for detecting motion in a video image by comparison of a video line value with an interpolated value
Motion vector detection system of a moving object on a screen
Movement detector for use in television signal processing
Interstitial signal generating system
Video signal processing circuit of motion adaptive type
Video signal processing circuit for processing an interlaced video signal
Circuit arrangement for enhancing the horizontal definition of a television signal
Method and apparatus for improving vertical definition of a television signal by scan conversion
Apparatus for generating an interlaced slow motion video output signal by spatial and temporal interpolation Patent #: 4987489
ApplicationNo. 575269 filed on 08/30/1990
US Classes:348/452, Motion adaptive348/700Motion dependent key signal generation or scene change detection
ExaminersPrimary: Peng, John K.
International ClassesH04N 007/18
AbstractA video system includes a scan converter for developing a progressively scanned display of video lines from a two field interlaced line system. Three video pixels are simultaneously supplied to a motion detector and a three dimension interpolator, the pixels corresponding to the pixel from the line above and the line below the pixel to be interpolated and to the corresponding pixel from the previous field. A motion coefficient for each interpolated pixel is stored in a field memory and the coefficient determined for the previous field interpolated pixel is consulted in developing motion factors for controlling multipliers in the three dimension interpolator. The interpolated pixel may thus be any porportion of the pixels on the line above, the line below and the previous field. An adaptive peaking and noise coring circuit is included. A spatial array of three lines of pixels, both real and interpolated, is developed and a horizontal, a vertical and two diagonal gradients between pair of pixels in the array are calculated. Logic circuitry and a maximum value decoder determine a peaking factor based upon the maximum gradient. A simplified adjustable noise coring circuit with symmetrical and asymmetrical peaking is also shown.