SYSTEM FOR DISPLAYING VIDEO IMAGES ON A LINE-BY-LINE AND POINT-BY-POINT SCANNING SCREEN

摘要

P THIS SYSTEM INCLUDES A COMPOSITE MEMORY 5 IN WHICH THE IMAGE DATA TO BE DISPLAYED FOR EACH MEMORY ARE STORED. A VIDEO DISPLAY PROCESSOR 12 CONTROLS THE SCREEN 8. A CENTRAL PROCESSING UNIT 1 ALLOWS THE COMPOSITION OF THE IMAGE USING THE MEMORY AND AN ADDRESS PROCESSOR 10, THE EXTRACTION OF THE POINT DATA TO BE DISPLAYED BY A TIME BASE BT IN SYNCHRONISM WITH THE SCANNING OF THE SCREEN AND BY A DEVICE 15 FOR DYNAMIC ACCESS CONTROL THAT ALLOCATES THE TIME OF ACCESS TO IT AMONG THE DIFFERENT BODIES USING THIS MEMORY. MEMORY 5 INCLUDES A FIRST MANAGEMENT MEMORY FOR THE MEMORIZATION OF A DATA WORD FOR A LINE OR A GROUP OF LINES BEING PART OF THE IMAGE, EACH WORD CONTAINING AN ADDRESS VALUE FOR ADDRESSING A SECOND MANAGEMENT MEMORY WHICH CONTAINS FOR EACH OF THESE ADDRESSES, AT LEAST ONE WORD OF DISPLAY ATTRIBUTE DATA CHARACTERIZING THE CONTENT OF THE LINE (S) CORRESPONDING TO THE RESPECTIVE ADDRESS VALUE OF THE FIRST MANAGEMENT MEMORY. /P