Patent ID: 6469746
Filing Date: 2002-10-22
Classification: H04N

Abstract:
A multi-vision screen display device comprising:a display screen divided into a plurality of areas for respectively displaying a plurality input images on respective preset areas, wherein each input image is output from a different one of a plurality of image sensing means; a plurality of image processing units, each corresponding to one of said processed areas and each receiving a respective one of the input images and outputting the respective one of the input images at a timing to display it on the corresponding preset area; an input image distributing means for distributing the input images each to a corresponding one of the image processing units; and a display control means for controlling the corresponding image processing unit to zoom-up magnify the input image to be displayed on the corresponding preset area independently of the other areas, wherein each one of said plurality of process units comprises an image memory, a writing means for writing the input image onto the image memory and a reading means for reading the image from the image memory, wherein, for each image processing unit, said reading means reads the image from the image memory at a timing which realizes to display the image on the corresponding preset area, and wherein the display control means controls a writing speed of the writing means and a reading speed of the reading means at the image processing unit which is designed to operate a zoom-up magnification of the image, and wherein the display control means further comprises a readout area selecting means for selecting a size of a readout area within a scanning field of the input image, in which the readout area represents the image to be read from the scanning field and displayed on the corresponding preset area of the display screen.