SU1176372A1 - Device for displaying information on screen of cathoderay tube - Google Patents

Abstract

DEVICE FOR DISPLAYING INFORMATION ON THE SCREEN ELECTRON-RAY TUBE (CRT), containing sequentially connected synchronization unit, row element counter and horizontal scanner, first comparator, beam illuminator, consecutively connected row counter and frame scanner, output counter of the line pattern elements the input of the row counter, the outputs of the line and frame scanners and the beam illumination are connected respectively to the corresponding deflecting system CRT modulators, the first input of the first comparator is connected to the output of the memory unit, the second input with the output of the row element counter, the output of the first comparator is connected to the first input of the beam illuminator, the second output of the row counter is connected to the second input of the memory unit, different that, in order to increase accuracy by the possibility of displaying on the screen a scale that allows determining the values of the monitored parameter in percent 3 depending on the minimum and maximum values of the calibration parameters c, it contains a series-connected first decoder, a first standby multivibrator, a first register, a serially connected second decoder and a second standby multivibrator, a second register, a trigger, a controlled pulse generator, a pulse counter, a third standby multivibrator, the second and third comparators, the first and second And elements, the first and second elements are NOT serially connected amplifier and integrator, the output of which is connected to the first input of a controlled pulse generator, the output of which is connected n with the second input of the beam illumination device and the counting input of the pulse counter, the output of which is connected to the first trigger input, the output of which is connected to the first input of the first AND element, the input of the first K1 element HE, the installation input of the pulse counter and the input of the third i standby multivibrator , the output is 9) pogo connected to the third input of the & 0 beam illuminator, the output of the count, the row trick is connected to the input of the first; and the input of the second two-decoder, the output of the memory unit is connected to the information inputs of the first O and the second register Bj, the output of the first standby multivibrator is connected to the control input of the first register, the output of which is connected to the first input of the second comparator, the output of which is connected to the second input of the first element I, the input of the second element NOT, the output of which is connected to the first input of the second element And, the output of which is connected to the first input of the amplifier, the second input

Description

which is connected to the antenna of the first element And, the output of the second standby multivibrator is connected to the control input of the second register, the output of which is connected to the first input of the third comparator, the output of which is connected to the second input of the trigger and

the second input of the second element And, the second inputs of the second and third comparators are connected to the output of the line element counter, the output of the first element is NOT connected to the third input of the second element I.

The invention relates to automation and computing technology. And can be used in the construction of display devices for information on the screen of television receivers. The purpose of the invention is to improve the accuracy of the device by displaying a scale on the screen, which allows the values of the monitored parameter to be determined in percent, depending on the maximum and minimum sign of the calibration parameters. FIG. 1 shows the functional scheme of the device; in fig. 2 - epics on his work. The device contains a synchronization unit 1, a counter of 2 line elements, comparators 3-5, a counter of 6 lines, a horizontal scanning device 7, a CRT 8, a beam illumination device 9, a memory block 10, decoders 11 and 12, a frame scanning device 13, the first 14 and second 15 standby multivibrators, registers 16 and 17, trigger 18, third standby multivibrator 19, controlled pulse generator 20, pulse counter 21, first element 22 and 22, elements NOT 23 and 24, second | 25th element and 25 , amplifier 26 and integrator 27. The device operates as follows. In the initial state, the counter of 2 line elements and the counter of 6 lines are reset to zero, the displayed information is displayed in memory block 10 (including two calibration levels corresponding to the minimum and maximum kM values, the scale of the displayed parameters). The pulses coming from the synchronization unit 1 start the counter 2 line elements, the horizontal scanner 7, the 6 line counter, the output of which is used by the vertical frame generator 13, which, together with the horizontal scanner 7, generates a register scan on the CRT 8. Simultaneously with forming each line a numeric code from the output of the counter 2 line elements is fed to the first input of the comparator 3, the second input of which from the memory block 10 receives the numeric code from the output of the counter 2 e line input to the first input of the comparator 3 to the second input of which from the memory block 10 receives the numeric code displayed by this line (several lines) of this monitored parameter, the address of which is specified by a 6 line counter connected to the address inputs of the memory block 10 codes arriving at the inputs of the comparator 3, it is triggered and its output signal arriving at the input of the beam illumination shaper 9 prohibits the beam illumination on the screen, CRT 8. Thus, on the CRT 8 screen for each displayed A parameter forms a capacitive column, the length of which is proportional to the numerical value of this parameter. Decoders 11 and 12, connected to a 6 line counter, extract the addresses by which the numbers corresponding to the maximum and minimum values of the calibration parameter are recorded in memory block 10. The signals from the outputs of the decoders 11 and 12 start the waiting multivibrators 14 and 15, the outputs of which are connected to the control inputs of the registers 16 and 17, respectively. The pending multivibrators 14 and 15. generate short pulses, which register the numeric codes with registers 16 and 17 from memory block 10 from the maximum and minimum values of the calibration parameter, respectively. From the output of register 17, the numeric code corresponding to the minimum value of the calibration parameter is fed to the input of comparator 4, the second input of which is connected to the counter of the elements of the row. When the numerical codes that arrive at the inputs of the comparator 4 match, it fires and flips trigger 18 from state O to state 1 (FIG. 2 a), the output of which (FIG. 2 b) triggers the waiting multivibrator 19, which forms a short pulse, The beam shaper 9 (Fig. 2c) arrives, resulting in the beam being illuminated for the duration of this pulse, whose temporal position is determined by the minimum value of the calibration parameter recorded in register 17. After the occurrence of 1 at the output of three heights 18 ( Fig. 2 b) the operation of the controlled genarauor 20, which generates short pulses arriving at the illumination beam shaper 9, is permitted. and the input of the counter 21 pulses (Fig. 2 g). As a result, 10% marks of the scale being formed are highlighted on the screen of the CRT 8 after the zero mark. After the formation, the last (tenth) 100% scale mark at the output of the counter 21 appears 1, which enters: at the installation input of the trigger 18 and resets it to the state O, the operation of the controlled generator 20 is disabled and the formation of the RC marks. This process is repeated for all rows and on the CRT 8 screen there are some odd narrow vertical marks, the position of the first (zero) from the mark coinciding with the end of the bar, the column representing the minimum value of the calibration parameter. The position of the last (100%) mark is determined by the repetition frequency of the pulses produced by the generator 20, the control of which is the voltage coming from the output of the integrator 27, so that 100% always coincides with the end of the string displaying The maximum value of the calibration parameter. 72-4 The generator 20 is controlled by elements And 22 and 25, elements NOT 23 and 24 and amplifier 26, which are a time discriminator, at the first input of which (first input of element And 22 and input of element NO 24) a signal from the output of comparator 5, which is triggered by the coincidence of incoming 2 numeric codes from the output of the counter 2 line elements from the output of register 16, in which the numerical value of the maximum value of the calibration parameter (Fig. 2 d) is written, which corresponds to the case in which laid The last 100% mark (Fig. 2 d) coincides with the instant of operation of the comparator 5, i.e. This mark coincides with the end of the luminance column corresponding to the maximum value of the calibration parameter. In this case, the voltage at the output of the amplifier 26 is zero, and the voltage at the output of the integrator 27 is constant. When the maximum value of the calibration parameter is changed, for example, its decrease, the position of the pulse at the output of comparator 5 (dashed line in Fig. 2e) changes, and at the output of element And 22 a pulse is formed whose duration is equal to the difference between the back front. pulse at the output of the trigger 18 (Fig. 2 b) and the last front of the pulse at the output of the comparator 5 (Fig. 2 d, dotted line). These pulses, generated at the line frequency, are fed to the direct input of amplifier 26, amplified by it, and fed to the input of integrator 27, the output voltage of which increases, which leads to a change in the frequency of generator 20, which occurs until the falling edge of the pulse at the output of the trigger coincides. 18 (dotted line in FIG. 26) with a leading edge of the pulse at the output of comparator 5 (dotted line in FIG. 2 d). As the fronts of these pulses draw closer together, the pulse duration at the output of the And 22 element decreases until it disappears when they coincide. This reduces the scale of the percentage grid displayed on the screen (dotted line in Fig. 2 g) to coincide with the 100% mark with the end of the solid column showing the maximum value of the calibration parameter.

If the scale of the percentage grid is low, then the frequency adjustment of the generator 20 is performed in a similar way, but in a different direction, since the inverting input of the amplifier 26 receives pulses from the output of the AND 25 element, the duration of which is proportional to the magnitude of the error. The integrator 27 integrates the negative pulses at the output of the amplifier 26, its output voltage goes to the control input of the generator 20 and decreases, the frequency of the pulses it generates decreases; 1, until the 100% mark with the end of the luminous bar displays the maximum value of the calibration parameter.

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Claims (1)

A DEVICE FOR DISPLAYING INFORMATION ON THE ELECTRON BEAM TUBE (CRT) SCREEN, comprising a synchronization unit connected in series, a line element counter and a horizontal line shaper, a first comparator, a beam illumination shaper, a line counter and a line pattern shaper connected in series, the output from the line element counter is connected the line counter input, the outputs of the line and frame scan drivers and the beam illumination are connected respectively to the corresponding deflecting systems and modes CRT, the first input of the first comparator is connected to the output of the memory unit, the second input is connected to the output of the line element counter, the output of the first comparator is connected to the first input of the beam illuminator, the second output of the line counter is connected to the second input of the memory unit, characterized in that , in order to increase accuracy by the possibility of displaying on the screen a cabinet that allows you to determine the values of the controlled parameter in percent depending on the minimum and maximum values of the calibration parameters, it contains the first decryptor, the first standby multivibrator, the first register, the second decryptor and the second standby multivibrator connected in series, the second register, the trigger, the controlled pulse generator, the pulse counter, the third standby multivibrator, the second and third comparators, the first and second elements And, the first and the second elements are NOT and the amplifier and integrator connected in series, the output of which is connected to the first input of the controlled pulse generator, the output of which is connected to the second input a beam illumination generator and a counting input of a pulse counter, the output of which is connected to the first input of the trigger, the output of which is connected to the first input of the first AND element, the input of the first element NOT, the installation input of the pulse counter and the input of the third, | a multivibrator waiting, the output of which is connected to the third input of the beam illuminator, the output of the line counter is connected to the input of the first • and the input of the second decoders, the output of the memory unit is connected to the information inputs of the first and second registers, the output of the first waiting multivibrator is connected with control input of the first register, the output of which is connected to the first input of the second comparator, the output of which is connected to the second input of the first element AND, the input of the second element is NOT, the output of which is connected to the first input the second element And, the output of which is connected to the first input of the amplifier, the second input of which is connected to the output of the first element And, the output of the second standby multivibrator is connected to the control input of the second register, the output of which is connected to the first input of the third comparator, the output of which is connected to the second input of the trigger and the second input of the second element AND, the second inputs of the second and third comparators are connected to the output of the line element counter, the output of the first element is NOT connected to the third input of the second element I.