SU411447A1 - - Google Patents

Description

one

The invention relates to the field of automation and computer technology and can be used as an external device of digital computers for displaying graphical and alphanumeric information on a color kinescope screen. Devices for displaying graphical information on a color kinescope screen are known, containing a data block connected via a digital-to-analog recording converter and a beam deflection unit to a recording coil of a storage cathode tube (ZELT), as well as a color to color code with recording selector. connected to the ZELT modulator, whose signal electrode connected to the load resistor is connected to the illumination unit, the pulse generator and the television unit through the readout unit Vertkov, the outputs of which are respectively connected to the coil reproducing a color picture tube, through the serially connected lowercase counter pulses and digital-to-analog converter read -c ZELT read coil connected in series and through a counter and the block decoder color illumination - with the cathodes of the color picture tube.

In order to improve the quality of color image of graphic information, a read selector, a line start combining unit and an automatic adjustment unit are additionally introduced into the device, the output of the pulse generator and the output of the line start combining unit, whose input is connected to the output of the television scanner unit, connected to the counter, and the output of the digital-to-analogue reading converter is connected to one input of the automatic adjustment unit, the output of which is through the reading unit connected to another input of the television sweep unit and to the input of the line beginning match unit.

The drawing shows a block diagram of the proposed device.

The device contains a record selector 1, a code decoder - color 2, a data block 3, a beam deflection unit 4, a digital-to-analog converter of record 5, a storage electron tube (ZELT) 6 with a recording coil 7, with a reading coil 8 and with an signal electrode 9 , digital-analogue readout converter 10, readout unit 11, illumination unit 12, television scanner unit 13, horizontal pulse counter 14, automatic adjustment unit 15, color decoder 16, pulse generator 17, readout selector 18, combining unit for starting lines 19, score IR color kinescope 20 and 21 to the coil 22. The reproducing apparatus operates as follows. Information about the image, its color and location on the screen of the color indicator gives the data block 3, which may be, for example, a digital computer. The data array is digitally fed to the code decoder - color 2, recording selector 1 and digital-to-analog recording converter 5. Beam deflection unit 4 generates currents in recording coil 7 for scanning the surface of the ZELT 6 beam, and recording selector 1 fixes the data with different levels of potential rel ispha at the points of the triads of the target coordinate grid. Three pulses of the sign of the record, coded by a shift in time relative to each other and relative to the points of the triads. are fixed at the beginning of each line, and 20 reference pulses are fixed at each coordinate point of the first line. Underband pulses and reference pulses are recorded at the maximum depth of the potential relief. The number of points in the triad on which information is recorded, their location relative to the beginning of the recording line, and the level of potential relief are determined by the code (color) received from data block 30 3. To display in one of the primary colors .R is red, G is green, B - blue information is recorded only in the corresponding points of the R, G and B triads of the grid of 35 potential relief levels, for example Vi. For reproduction with secondary colors (yellow, blue, orange), as well as white information is fixed, respectively, iR and G or B and G, or 40 R and B, or R, G and B triad points with the same level of potential relief Vi. Consequently, various combinations of triad points, in which information is recorded with one level of potential relief, allow it to be reproduced on the color kinescope screen in 21 different colors. The potential relief depth is determined by the amplitudes of the output signals, 50 generated by the recording selector 1. The read beam of the SELT 6 due to the stepped form current in the read coil 8, generated by the horizontal pulse counter 14 and the digital-analogue read converter 55, discretely scans the surface of the SELT target. Synchronously with it, due to the action of the linearly varying current in the reproduction coil 22, formed by the television scanning unit 13, 60, all three beams of the color kinescope 21 are scanned on the screen. When scanning the target dielectric surface with a readout beam on the signal electrode 9 of the SELT 6, the reference pulses on the first 65 5 25 line of the read frame, the characteristic pulses at the beginning of each read line and the read signals, and the porous pulses are extracted in the automatic adjustment unit 15. The pulses are allocated in the block of the mix: Eni. First lines of reading 19. Signals take one of n possible values, depending on the depth of the potential relief at a given discrete point of the triad of the grid. The signals amplified in the readout unit 11 are fed to the input of the backlight unit 12. The line beginning alignment unit 19 selects in each line of the readout pulses of the feature and produces pulses that go to one input of the readout selector 18, its other input receives the signals of the pulse generator 17, frequency which is set in accordance with the required number of grid points. From the output of the read selector 18, the pulses through the counter 20, the decoder 16 and the illumination unit 12 through separate channels arrive at the corresponding and control electrodes of the color kinescope 21. When displaying information in primary colors, pulses are emitted from one of the three outputs of the illumination 12 arrive at the corresponding control electrodes of the color kinescope 21. To reproduce information in secondary colors (yellow, blue, orange), and also white in color, the pulses from the output of the backlight unit arrive simultaneously directly to R and G or B and G, or R and B, or R, G and B color kinescope control electrodes. The subject of the invention A device for displaying graphical information on a color kinescope screen, containing a data block connected via a digital-to-analog recording converter and a beam deflection unit with a recording coil of a storage cathode ray tube (ZELT), as well as directly connected via a code-color decoder to a color selector write connected to the ZELT modulator, the signal electrode of which is connected to the load resistor is connected to the illumination unit via a reading unit, a pulse generator and a TV unit ion sweep, the outputs of which are connected respectively to the color kinescope playback coil, through a serially connected horizontal pulse counter and a digital-to-analog reading converter — with a ZELT reading coil and serially connected counter, a color decoder and a node of the illuminator — with cathodes of a color kinescope, different that, in order to improve the quality of the color image, a selector is entered into it

the reading, the line start combining unit and the automatic adjustment unit, the output of the pulse generator and the output of the line beginning combining unit, the input of which is connected to the output of the television scanning unit, are connected to the read selector connected to the counter, and the output of the digital-analogue reading converter is connected to one input of the automatic adjustment unit, the output of which is connected through the reading unit to another input and to the input of the line beginning alignment unit.

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