Accession Number : AD0712805

Title :   DISPLAY OF INFORMATION FROM THE IMMEDIATE-ACCESS STORAGE OF A DIGITAL COMPUTER ON THE SCREEN OF A CATHODE-RAY TUBE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Artamonov,I. A. ; Emelyanova,L. A. ; Krymskii,I. K. ; Torgov,Yu. I. ; Shmatalo,S. G.

Report Date : 12 JUN 1970

Pagination or Media Count : 11

Abstract : A method for generating computer-programmed readout displays is discussed. The technique uses the storage facilities of the BESM-6 and a standard TV picture tube having a 400 x 400 point raster. It is designed for graphical and alphanumeric displays, up to a maximum of 1200 symbols, including Latin and Cyrillic characters, numbers, and signs. External programs for alphanumerics, for example, are stored on four tracks of a BESM-6 drum. A symbol is generated in a sub-raster of 8 x 8 bits, in two drum revolutions; since drum speed is 2850 rpm, full raster rate is 24/sec. A figure shows an example of writing the given Cyrillic. Codes are parallel-stored in a shift register, and then read out sequentially and applied to the display tube electrodes as shown in a figure. Since the drum tracks are in four quadrants, there is an information gap in readout; this is compensated for by forming the main raster in eight 50-line subframes, and backing up the delayed portions by one line, thus eliminating image gap and minimizing flicker. Horizontal lines are one line width apart, and symbols are spaced 1/3 of a symbol width apart. The proposed display method is recommended for its simplicity and flexibility. (Author)

Descriptors :   (*DIGITAL COMPUTERS, *CATHODE RAY TUBE SCREENS), DISPLAY SYSTEMS, USSR

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE