SU1091216A1 - Device for displaying information on television indicator - Google Patents

Abstract

A DEVICE FOR DISPLAYING THE FORMATION ON THE TELEVISION INDICATOR, containing a serially connected data input unit, a recording switch, a memory block, a read switch, a symbol generator, a video signal generator, a television indicator, and a serially connected decomposition element generator, an decomposition element counter, a character counter in the line , the counter t of levization strings and the counter of lines of text, the output of which is connected to the second input of the memory unit, the third input of which is connected to another output of the counter Simulating the oxes in a row, another output of the decomposition element counter is connected to another input of the readout switch, characterized in that, in order to simplify it by reducing the size of the memory block, it contains a synchronous generator and a serially connected color register, a digital-analog converter and a frequency module the torus, the output of which is connected to the second input of the adder, i the third input of which is connected to another output of the digital-analogue transducer (L of the generator, the other input of which is connected to the first output of the clock generator, the second, third, fourth, and fifth outputs of which are connected respectively to another input of the write switch, read switch, the fourth input of the adder, and to the input of the generator of decomposition elements. Oi

Description

- 1 The invention relates to computing computer technology and can be used in designing television displays and television information display devices on liaaecTHo information display device containing an input data block, a memory block, a symbol generator, a video driver and a display unit GO Compared to full-graphic characters the devices are simpler in generating black and white information and have a low memory capacity due to the use of a symbol generator. The direct formation of color information in such; devices with a known structure generally result in a significant condition of the symbol generator, which must remember the different color shades of the characters, and the entire display device B in general. At the same time, the total memory capacity of the character device is equal to the total volume of the memory block and the character generator, which dramatically increases and becomes no less than the memory capacity of the full-graphic device. Therefore, the use of color character display devices with a known structure is practically the closest to that proposed by the technical nature. is a television device for displaying information on a television display device containing serially connected data input unit, com Tatorey zapisi5 memory unit, the read switch, symbol generator ,, shaper video signal combiners, televizionnsh indicator and successively connected generator elements and degradation associated schetchikId: 9pye blocks with memory character generator and video signal generator. The operation of the device, when reading information for display on a television indicator, is performed under meter control. The digital information identifying the CHARACTER code, successively line by line, is output from the cells of the memory through the read switch to the symbol generator. The symbol generator generates a parallel binary code for the symbolic outline that is converted into a serial time code in the form of a Bi-signal 16tel. The generated video signal is supplied for display via a summer adder into a 2: 1 television indicator. The disadvantages of the known device are a large amount of memory of the block of memory and the symbol generator and the hardware complexity of the device implementation in the formation and display of color information according to the known structure of the device. Practical use of the known device in this case significantly limits | . The purpose of the invention is to simplify the device by reducing the size of the memory block. The goal is achieved by the fact that a device for displaying an inurmation on a television indicator, comprising a serially connected data input unit, a recording switch, a memory unit, a readout switch, a symbol generator, a video signal and a television indicator, and the serially connected element generator decompose, a decomposition element counter, a character counter in a line, a television line counter and a text line counter, the output of which is connected to the second input of the memory unit, the third input of which It is connected to another output of the character counter in the row, another output of the decomposition element counter is connected to another input of the read switch, contains a synchronous generator and serially connected color register, digital analog logo converter and frequency modulator, the output of which is connected to the second input of the adder, the third input of which is connected with (Another output of a digital-analog converter, the other input of which is connected to the first output of the synchronizing generator, the second, third, fourth and fifth outputs of which are connected to otvetcTBeiiHo to another input of the recording switch, switch schitgoani, fourth input of the adder and the input. generator decomposition elements. FIG. 1 shows a block diagram of a device for displaying information on a television indicator j in FIG. 2, a possible view of the information generated on the screen of a television indicator. The device includes (FIG. {) Data input unit 5 switch 2 recordings 3, memory block 3 , read switch 4, 5 character generator, video signal generator 6, adder 7, television indicator 8, clock generator 9, decomposition element generator 10, decomposition element counter 11, 12 character counter in the line, body counter 13: visual lines, - counter 14 lines those Incidentally, a color register 15, a digital-to-analog converter 16, and a frequency modulator 17. In FIG. 2, the following designations are introduced: 18, 19 — conditional color codes corresponding to different color backgrounds, distributed among color spaces, 20 — television screen, 21 — conditional grid of dividing the screen into character and color spaces, 22 — picture contour, 23 — television line, 24 - switching points of the color background. The device works as follows. In the recording mode, the graphical information is entered into the memory block 3 from the data input block 1, either using the keyboard or computer. At the same time, the switch 2 records from the data entry block 1 receive the address code corresponding to the address on the television screen of the symbol being written and the digital code of the input elementary symbol itself. The entered digital code carries the format of the image contour and color background (Fig. 2). The recording switch 2 passes the input symbol coding signal and the address signal to the first input of the 3 memory block only during the backward line and frame scan code, for which the second input of the synchronization generator 9 is supplied to the second input of the recording switch 2. This will record the digital graphic information at the address specified by the address code. In the mode of reading information on a television screen, the device operates under the control of the counter I1 of the decomposition elements of the waveguide, the counter of 12 characters per row of the counter of 13 television lines and the counter of 14 lines of text connected in series, as well as the synchro generator 9. Pulses from the output of the 164 syn generator 9 arrive at the generator 10 decomposition elements, launching it during the forward stroke of the horizontal and vertical sweeps. Thereby, the image element is firmly attached to the beginning of the television frame and line. The generator 10 of the elements of decomposition of the pulse pulses with a frequency higher than the frequency of the elements of the decomposition of the image of the television signal. These pulses are applied to the input of series-connected meters 11–14 operating in counting mode. The current values of the digital codes from the second output of the counter 12 characters per line and the second output of the counter 14 lines of text are fed to the second and third common inputs of the memory block 3. These codes determine the current cell address from which the information is being read at a given point in time. During the direct progress of television scans, the memory and color information of the memory cell of the memory block 3 are written over the read switch 4 by the signal received at the second input of the switch 4 at the third output of the clock generator 9 into the 5-character generator and the color register 15. The 5-character generator produces a decomposition of the digital code corresponding to the luminance component of a character into television lines (generation of symbols, contours) using a signal fed to its second input from a counter of 13 television lines. A parallel digital binary code from the output of the 5-character generator is fed to the video signal shaper 6, where using the signals coming from the second output of the counter 11 character decomposition elements, a time code scan takes place. The video signal generated in this way carries luminous, black-and-white information about the image contour (Fig. 2). Image color information is formed in a color channel containing color-connected register 15, digital-to-analog converter 16, the second input of which is connected to the third input of adder 7, frequency modulator 17 Background color code, matching $ 1 to the current color frame; and the frame is stored in the color register 15. At the moment corresponding to the image contour point along the television line (point D- in Fig. 2), the background color of the graphic image changes from 18 to 19 point in time is determined by the contour point signal generated in the video signal shaper 6 by hopping luminance contour luminance image. The contour point signal from the second breather of the imaging unit .6 the signal is transmitted to the control input of the color register 15. At the same time, information from the output of register 15 in the form of a parallel binary code is copied into a voltage converter 16 in order to form a new color background 19. Thus, the colored background is tightly linked to the contour image. In a digital-to-analog converter, 1 digital code, carrying information about luminance and color, the image: is converted into a bright signal Vy and interlaced into two color difference signals and Vg - y in accordance with the standard of the SECAM system From the fifth output of the synchro rogenerator 9, horizontal and vertical synchronization signals are given. During the frame traverse in cidzro-analog converter 16, color-locked pulses are generated and mixed into the video signal. From the first output of the digital-to-analog converter 16, the color difference signals V (-y, D-B are sent to the frequency modulator 17. the frequency of the signals on the two subcarriers. On the frequency modulator 17 a color video signal is formed, and on the second output of the digital-to-analog converter 16 a high-speed video signal in accordance with the standard CEICAM systems, the Formed video signal with the I 66 information about the graphic image circuit from the output of the video signal generator 6 is input to the adder 7. The second input of the adder 7 receives synchronization pulses from the second output of the synchronizer 9, and the third input of the adder 7 is supplied with the video signal of the second output from the second output digital-to-analog converter 16, and the fourth input of the adder 7 receives the color video signal from the output of the frequency modulator S7. In the adder 7, a full television video signal is generated, which is supplied to the television indicator 8, where a color graphic image is reproduced. The use of the proposed television display device in comparison with the known ones makes it relatively simple to carry out the technical construction of display devices for color graphic images and thereby expand their field of use. This turned out to be possible primarily as a result of connecting the information input of the input color channel containing serially connected color register, code-voltage converter and frequency modulator to the read switch, the symbol generator, and as a result of introducing the control link from the video signal source to the register colors with which the background color can be matched to the contours of the image. The advantage of the proposed device is the possibility of a relatively simple rearrangement of a character graphic television display device of black and white information in order to reproduce color images on a color television indicator. In this case, the memory volume of the symbol generator remains almost unchanged, and the size of the information word stored in the memory block, is increased by an amount determined by the number of reproducible colors.

13

G8

1Q

79

2it

20

2f 27

22

78 2J

2

fsh.2

Claims (1)

DEVICE FOR DISPLAYING INFORMATION ON A TELEVISION INDICATOR, comprising a data input unit, a recording switch, a memory unit, a read switch, a symbol generator, a video signal generator, a television indicator, and a series of decomposition elements generator, a decomposition element counter, a character counter in a line , a counter of television lines and a counter of lines of text, the output of which is connected to the second input of the memory unit, the third input of which is connected to another output of the counter, characters in a line, _ the other output of the decomposition element counter is connected to another input of the readout switch, characterized in that, in order to simplify it by reducing the size of the memory block, it contains a clock generator and series-connected color register, digital-to-analog converter and frequency modulator, the output of which is connected with the second input of the adder, the third input of which is connected to the other output of the digital-to-analog converter, the other input of which is connected to the first output of the synchronizer, the second, third d, the fourth and fifth outputs of which are connected respectively to the other input of the write switch, read switch, the fourth input of the adder and the input of the decomposition element generator. . 1 I 091