SU414447A1 - - 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 associated with a Zalis digital-analog converter and a beam deflection unit with a recording coil of a storage cathode ray tube (ZELT), as well as a color-code with color selector connected to a decoder. 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 is read - to read ZELT coil and through serially connected counters, 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 scanner unit and to the input of the line beginning alignment unit.

The drawing shows a block diagram of the proposed device.

The device comprises a recording selector 1, a code decoder - color 2, a data block 3, a beam deflection unit 4, a digital-to-analog recording converter 5, a storage electron tube (ZELT) 6 with a recording coil 7, with a reading coil 8 and with a signal electrode 9, digital-analogue readout converter 10, readout unit 11, light unit 12, television scanner unit 13, horizontal pulse counter 14, automatic adjustment unit 15, color decoder 16, pulse generator 17, read selector 18, line beginning alignment unit 19, count IR 20 and 3 color kinescope 21 with a coil reproduced 22. The device operates as follows. Information about the image, its color and location on the screen of the color indicator5 gives a block of data 3, which may be, for example, a digital computer. The data array digitally posts a code decoder — color 2, record selector 1 and record digital to analogue converter 5. Beam deflection unit 4 generates currents in recording coil 7 to scan the target surface with a ZELT 6 beam, and record selector 1 fixes the data with different levels of potential relay-15 ef at the points of the triads of the target coordinate grid. Three pulses of the recording feature, encoded by a shift in time relative to each other and relative to the points of the triads, are recorded at the beginning of each line, and the reference pulses are fixed at each coordinate point of the first line. The recording feature pulses and the reference pulses are recorded by the maximum depth of the potential relief. 25 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 3. For display in One of the primary colors is R — red, G — green, B — blue information is only underrepresented at the corresponding points of the R, G and B triad coordinates of the 35 grid of the potential relief level, for example Vi. For recreating with secondary colors (yellow, blue, orange) and also white information is fixed, respectively, R 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-45 fa, allow it to be reproduced in seven different colors on the screen of the color kinescope 21 in seven 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 current in the read coil 8, generated by the horizontal pulse counter 14 and the digital-to-analog converter of the read 10, scans discretely on 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 scanner unit 13.60, all three beams of the color kinescope 21 are scanned on the screen. When scanning the dielectric surface of the target with a read beam on the signal electrode 9 of the SELT 6, the reference pulses on the first 65 4 line of the read frame, the characteristic pulses at the beginning of each read line and the read signals, the first pulses are extracted in the automatic adjustment unit 15. The pulses of the characteristic are released the block of combining the beginning of the reading lines 19, the 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 coordinate grid. The signals amplified in the readout block arrive at 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 control electrodes of the color kinescope 21. When displaying information in the primary colors, pulses are received at one of the three outputs of the illumination 12 the corresponding control electrodes of the color kinescope 21. For reproducing information, secondary colors (yellow, blue, orange), and also white color, the pulses from the output of the backlight unit arrive simultaneously on R and G or B and G, or R and B, or R, G and B color kinescope control electrodes, 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 converter records and a beam deflection unit with a recording drum of a storage cathode ray tube (ZELT), as well as a code connected directly and through a decoder — a color with a record selector connected to the ZELT modulator, the signal electrode of which is connected to the load resistor y, through a readout unit connected to the illumination unit, a pulse generator and a television scanner unit, the outputs of which are connected respectively to a color kinescope playback coil, through a serially connected horizontal pulse counter and a digital-to-analogue readout converter with an EELT read coil and through serially connected meters , a color decoder and a backlight unit - with color kinescope cathodes, characterized in that, in order to improve the quality of the color image, a selector is introduced into it

the reading, the line start combining unit and the automatic adjustment unit, the output of the generator of pulses 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.