SU1493999A2 - Device for data display - Google Patents

Abstract

The invention relates to automation and computing and can be used in the development of universal information display devices. The purpose of the invention is to expand the field of application of the device by providing the ability to control the color of the displayed information. This is achieved by introducing a demultiplexer and corresponding functional links. The invention allows to control the color of the displayed information and expand the field of application of the device in control systems, i.e. where visual information is required. 1 il.

Description

The invention relates to automation and computing and can be used in the development of universal information display devices, and is an improvement of the invention according to the author. No. 1354182.

The purpose of the invention is to expand the field of application of the device by providing the ability to control the color of the displayed information.

The drawing shows the functional diagram of the device.

The device contains a clock generator 1, a binary counter-divider frequency 2, a counter of 3 characters, lines and rows, a video memory block 4, a shift register 5, a multiplexer 6, a trigger 7, an address trunk 8, a control unit U (microprocessor), a block 10 program memories and graphics of symbols, block 1I of memory of codes of symbols, address section 12, elements 13 and 14, write bus 15, bus 16, trunk

17 data, registers 18 and 19, readiness bus 20, synchronization block 21, subtraction counter 22, decoder 23, digital-to-analog converter (DAC) 24, counter 25 lines, digital-analog converter (PAI) 26, reference voltage source 27 (ION), demultiplexer 28.

The proposed device operates in the same way as the known device with the difference that the information from the output of the control register 19 now determines not the gradations of brightness and sync pulses, but the color and sync pulses, i.e. when preparing information for an image, control unit 9 (microprocessor) writes video information into block 4, into control bits, where the luminance code, the code defining the color (three codes) or the code defining the sync pulse were recorded in the known device. The information bits of the video memory block 4 in this case determine

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four

WITH

with with with with with

to

either certain points (in the color determined by the code in the control part) or the absence of luminescence (background). In the case where the code determines a sync pulse, there is no information at the R, G, B outputs of the demultiplexer. As a demultiplexer, it is convenient to use standard microcircuits, for example, K561KP1, or K561KP2; thereby setting the background color of the glow.

Claims (1)

Formula Invention A device for displaying information on the author. No. 1354182, characterized in that, in order to expand the field of application of the device by providing the ability to control the color of the displayed information, a demultiplexer is inserted in it, the information input of which is connected to the output of the shift register, and the control inputs of the demultiplexer are connected to the output of the control register, the demultiplexer outputs are device color control signal outputs.