ApplicationNo. 05/571521 filed on 04/25/1975
US Classes:348/239, Camera and video special effects (e.g., subtitling, fading, or merging)348/578Special effects
ExaminersPrimary: Britton, Howard W.
Attorney, Agent or Firm
AbstractAn area-imaging device is scanned by digital logic in an arbitrary manner which dissects and reassembles the scanned image in an arbitrary way, shifting and rearranging the image segments which comprise the image in accordance with a pre-arranged scheme. The area-imaging device preferably includes a two-dimensional array of light-sensing elements upon which an image is projected using conventional optics. Each light-sensing element in the array is individually addressable using a digital x-y-coordinate addressing scheme. Digital logic circuitry generates an arbitrarily complex scanning pattern comprising pairs of x- and y-coordinate values, and these coordinate values are supplied sequentially to the area-imaging device. The video information retrieved from the individual device elements in response to this scanning pattern is assembled time-wise into a video signal suitable for display upon the face of a conventional television display device that is scanned in a conventional way. By choosing the proper digital logic circuit elements, it is possible to achieve image-segment-rotation effects, image segment size-change effects, and effects in which image segments are moved horizontally and/or vertically. Pseudo-random scanning patterns may also be realized to encode an image prior to its transmission or storage.