SU1495845A1 - Device for displaying information on tv indicator - Google Patents

Abstract

The invention relates to automation and computing and can be used in information display systems. The purpose of the invention is to expand the field of application of the device due to the possibility of dynamically changing the alphabet of displayed symbols, which is achieved by introducing a switch of 5 symbols, a second recording switch 19, and corresponding functional links. The invention allows to quickly load into the generator 6 symbols any of the alphabets, the set of which is stored in a computer, which allows expanding the field of application of the device for designing television displays and display devices of color graphic images. 1 il.

Description

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The invention relates to automation and computing and can be used in information display systems.

The aim of the invention is to expand the field of application of the device due to the possibility of dynamically changing the alphabet of displayed characters.

The drawing shows a functional diagram of the device. I The device contains a block of 1 input I and data, the first switch 2 records I record, block 3 memory, switch 4 I read, switch 5 characters, I generator 6 characters, shaper I 7 video signal, adder 8, TV I indicator 9 , synchro generator 10, generator 11 decomposition elements, I NIN, counter 12 elements decomposition, | n, counter 13 characters per line, I counter 14 television lines, |. counter 15 lines of text, register 16

colors, digital-to-analog converter: 17 (D / A converter), frequency modulator 18 and second record switch 19. ; All units of the device for displaying information on a television indicator are standard-: dart units used in computer technology and devices; display information. Data input block 1 contains a key; input unit and computer interface; switches 2 and 19 contain gated address and data registers; memory unit 3 for storing parallel digital binary codes; read switch 4 is a gated data register; the switch 5 symbols is a digital code switch controlled from the data input unit 1; 6-character generator is implemented as a memory for storing parallel digital outlines of simrols; shaper 7 video contains sequentially shifting the data register; adder 8 is pea- lized as an analog adder; the television indicator 9 is a standard color television video camera operating on the SECAM system; sync generator 10 is a standard television unit that generates synchronization signals for television sweeps; the decomposition element generator 11 is implemented as a standard clock pulse generator; counters 12-15 are standard binary pulse counters; color register 16 is a parallel register for storing information; digital-to-analog converter 17 is a standard code-to-voltage converter; Frequency modulator 18 contains a modulation unit and a color video shaper in accordance with the SECAM system standard.

The device works in the following way.

In the recording mode, in the 6-character generator information is entered on the outlines of the alphabet of characters from data input unit 1 through the switch 5. A set of storage alphabets in the computer and any of them can be loaded into the generator 6 characters on-the-fly. In this case, the second record switch 19 from the data input unit 1 receives the digital code of the symbol and its outline (information on the character matrix is entered). In the recording mode, in the memory unit 3, which stores character codes, graphic information is entered from the data input unit 1 either from a computer or using a keyboard. At the same time, the first comm Tafop 2 entry from the data entry unit 1 receives the address code corresponding to the address on the television screen of the recorded symbol and the digital code of the elementary character of the alphabet itself. The entered digital code carries information about the elements of the image contour and color background.

The recording switches 2 and 19 pass information to the first input of memory block 3 and to the first input of the generator 6 characters, respectively, only during the reverse run of the lowercase and frame sweeps, for which the second input of the second switch 2 and the second input of switch I9 is supplied from the second sync generator output 10.

In the mode of reading information on a television screen, the device operates under the control of a counter of 12 decomposition elements, a counter of 13 characters per line, a counter of 14 television lines, a counter of 15 lines of text connected in series, as well as a sniper generator 10. Pulses from a sync generator output

10 enter the generator 11 of the decomposition elements, launching it during the forward course of the sweeps. Thereby, the image elements are tightly attached to the beginning of the television frame and line. Generator

11 elements of decomposition produces pulses with a frequency exceeding the frequency of the elements of the decomposition of the image. These pulses are applied to the input of series-connected counters 12-15 operating in counting mode. The current values of the digital codes from the second output of the counter are 13 characters per line and the output of the counter 15 lines of text are given

the second and third address inputs of memory block 3. These codes determine the current address of the memory location from which information is currently being read.

During the direct course of television sweeps, the color (black-and-white) and color information cells of the memory block 3 of the memory through the readout switch 4 are fed to the generator 5 by the signal input to the second input of the switch 4 readout from the third output of the clock generator 10 6 characters and in register 16 colors. The 6-character generator decomposes the digital code of the corresponding luminance component of a character into television lines (generating symbols of the contours using a signal fed to its second input from a 14-line TV counter. Parallel digital-binary code from the generator output

6 characters served on shaper

7, where, using the signals coming from the second output of the counter 12 decomposition elements, a time code sweep occurs. The video signal generated in this way carries with luminous black and white information about the contours of the image.

Color information is formed in a color channel containing serially connected color register 16, digital-to-analog converter 17, frequency modulator 18. A background color code corresponding to the current color test on the line and frame is stored in color register 16. In the mHTIHT time corresponding to the point of the image contour i formed along the television line, the color background of the graphic image changes. This moment of time is determined by the contour point signal generated in the video signal former 7 by a jump change.

Q luminance of the outline of the brightness image. A contour point signal from the first output of the video signal maker 7 is transmitted to the control input of the color register 16. In this case, information from

The 5 outputs of the register 16 in the form of a parallel code are rewritten into the converter 17; the code is the voltage for generating a new colored background. This makes a gesture of binding the color background to the contour image. In a digital-to-analog converter 17, a digital code carrying information about the luminance and color of an image is converted into

5 pkostny signal Vy and cross-line in two color difference signals V. and; Vg.y in accordance with the standard system SECAM. For this, the second input of a digital-to-analog converter

0 17 with the fifth output of the sync generator 10 are fed by lowercase and. frame synchronization signals. During the return stroke, the digital-to-analog converter 17 generates and replaces color synchronization pulses into the video signal.

From the first output of the digital-to-threshold converter 17, the color difference signals V.y, Vg.j, are fed to a frequency modulator 18, in which the frequency modulation of the signals is carried out at two subcarrier frequencies. The output of the modulator 18 is an abrasive color video signal, and at the second end of the converter 17 is a fast video signal in accordance with the SECAM system standard. The generated video signal with information about the contour of the graphic image from the output of the imaging unit 7 is fed to the first input of the adder 8, to the second input of which synchronization pulses are received from the fourth output of the clock generator 10. To the third input

The adder 8 video signal is supplied from the second output of the converter 17, and the fourth input of the adder 8 receives a color video signal from the output of the modulator 18,

In the adder 8, a full television video signal is generated, which is supplied to the television indicator 9, where a color graphic image is reproduced.

i Using the proposed device to display information on a television indicator allows you to dynamically change the alphabet of displayed characters.

formula of invention

A device for displaying information on a television indicator containing a data input unit, a first recording switch, a memory block, a read switch, an input of a data input block is a device input, a first output of a data input block is connected to an information input of a first: record switch, the first The output of which is connected to the information input of the memory unit, the output of which is: connected to the information input of the fiyTaTopa com readout, symbol generator hoB, video signal generator, sum Yator, the output of which is connected to the television input zion indicator, the first information input of the adder | 1 is connected to the first output of the video signal builder, whose information input is connected to the output of the character generator, the synchro generator, the decomposition element generator, the decomposition element count, the character counter in the line, the TV line counter, the text line counter whose input connected to the first output of the TV line counter whose second output is connected to the address input of the character generator, and the input is connected to the first output of the character counter in the article Ther, a second output coupled to a first address input of the memory unit, the second address input of which is connected to the output of counter lines of text characters in the line counter input connected to the first output of the counter elements

Compiled by S. Tehred L. Oliina

. Editor A.Shandor

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the decomposition, the second output of which is connected to the control input of the video signal imaging unit, the input of the decomposition element counter is connected to the output of the decomposition element generator, the input of which is connected to the first output of the synchronous generator, the second output of which is connected to the control input of the first recording switch, and the third output from the control the input of the read switch, the fourth output of the clock generator is connected to the control input of the adder, the color register, the digital-to-analog converter, the frequency modulator, the input The second is connected to the second output of the digital-to-analog converter, the second output of which is connected to the second information input of the adder, the third information input of which is connected to the output of the frequency modulator, the information input of the digital-analog converter is connected to the output of the color register, the information input of which is connected to the second output of the read switch , the control input of the color register is connected to the second output of the video signal conditioner, the clock input of the D / A converter is connected to to output clock, characterized in that, with a view to extending the scope of device due to the possibility of dynamic changes otobrazha- alphabet characters, symbols incorporated therein a switch having an information input connected to the first output of the read switch control input - to the second output of the input unit

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data, and the output is connected to the information input of the symbol generator, the second recording switch, the control input of which is connected to the second output of the synchronous generator, and the information input to the third output of the data input unit, the output of the second recording switch is connected to the second information input of the character switch.

Proofreader L. Patay

Claims (1)

Claim A device for displaying information on a television indicator comprising a data input unit, a first recording switch, a memory unit, a read switch, the input of the data input unit is an input of the device, 20 the first output of the data input unit is connected to the information input of the first recording switch, first output which is connected to the information input of the memory block, the output of which 25 is connected to the information input of the read switch, a symbol generator, a video signal conditioner, an adder, the output of which is connected to the input a television indicator house, the first information input of the adder is connected to the first output of the video signal conditioner, the information input of which is connected to the output of the symbol generator, a sync generator, a generator of decomposition elements, a decomposition account, the second output of which is connected to the control input of the video signal conditioner, the input of the element counter decomposition connected to the output of the generator of decomposition elements * whose input is connected to the first output of the clock generator, the second output of which is connected to the control the input of the first recording switch, and the third output with the control input of the read switch, the fourth output of the clock is connected to the control input of the adder, color register, digital-to-analog converter, frequency modulator, the input of which is connected to the first output of the digital-to-analog converter, the second 'output of which is connected to the second the information input of the adder, the third information input of which is connected to the output of the frequency modulator, the information input of the digital-to-analog converter is connected to the output an ode to the color register, the information input of which is connected to the second output of the readout switch, the control input of the color register is connected to the second output of the video signal generator, the clock input of the digital-to-analog converter is connected to the fifth output of the clock generator, characterized in that, in order to expand the scope of the device due to the possibility of dynamic changes the alphabet of the display is a decomposition element counter, a character counter per line, a television line counter, a text line counter, the input of which is connected to the first output of the television line counter, the second output of which is connected to the characters you enter, a character switch is inserted into it, the information input of which is connected to the first output 4θ of the read switch, the control input to the second output of the data input unit, and the output is connected to the information input of the character generator, it is connected to the first output by a reset and the input of the character counter in the line, the second output of which is connected to the first address input of the memory block, the second address input of which is connected to the output of the text line counter, input character count in the row is connected to the first output of the counter elements