Device for the designation of an image

摘要

The invention relates to a device for designating an element of an image in a display assembly. The device comprises a system providing the coordinates of a marked element of the displayed image, comparator receiving the coordinates of the marked element and receiving from a vector generator the moving coordinates of successive elements of the image while refreshed, and a register controlled for load by simultaneous coincidence the two pairs of coordinates for receiving the address of the marked element from an address counter associated with a memory recording the data that define the image. The invention also relates to an assembly for displaying information from a data processor on a scanned display screen.