SU1030838A1 - Device for displaying information on crt screen - Google Patents

Description

The invention relates to automation and computing and can be used in display devices for information on slowly varying processes. It is known a device for displaying information on a screen of a cathode-ray tube, which contains a control unit connected to a buffer memory block, two registers, two code-voltage converters, which are connected to a deflection system of a cathode-ray tube, and the inputs with the corresponding registers, the control inputs of which are connected to the control unit, and the informational ones - to the buffer unit, ip. The disadvantage of this device is the impossibility of demonstrating and displaying slowly varying processes. The closest technical solution to the invention. is a device for displaying information on the screen of a cathode ray tube containing a buffer memory device, the first and second inputs of which are connected to the outputs of the write and read blocks, respectively, the third input is connected to the output of the input shift register, and the output is connected to the first input the output shift register, the output of which is connected to the first input of the first buffer register, the synchronizer, whose input is connected to the output of the paTojJa gene, the first output is connected to the first input of the input register cd The second and third outputs are connected to the inputs of the write and read blocks, respectively, the fourth output is connected to the second input of the input shift register and to the inputs of the output shift register and the first buffer register, respectively, and the fifth output is connected to the input of the horizontal scanning unit, the output of which is with a deflector circuit of my cathode ray tube, a vertical deflection amplifier and a power supply unit whose outputs are connected to the deflecting system and the anode of the cathode ray tube, respectively, photoelectret code-analog output of which is connected to the first input of the amplifier 2 vertikashnogo deflection. The disadvantage of the known device is that when displaying several processes, even connected with each other in time, for example, by speed and acceleration, a proportional complication of the equipment is required. The purpose of the invention is to simplify devices when displaying several processes related to each other in time. The goal is achieved by the fact that a device for displaying information on the screen of a cathode ray tube containing a series-connected dead generator and a synchronizer connected to recording units and, reading connected to a buffer memory unit, a backlight unit connected to a CRT modulator, input register, horizontal scanner, output register, first buffer register and serially connected codanalog converter and vertical deflection amplifier associated with the deflecting system my CRT, the input register input is connected to the synchronizer and is the device information bus, and the output is connected to the buffer memory unit, the horizontal scanner input is connected to the synchronizer and the output is deviated by the CRT system, the output register inputs are connected to the synchronizer output and output the buffer memory block, the input of the buffer register is connected to the synchronizer input, contains a serially connected counter and a step voltage generator, serially connected decrypt h, the first element And and And tegrator, serially connected second buffer register, third buffer register, first inverter, first sinker, second AND element and OR element, second, third AND element, fourth buffer register connected in series, second inverter, third suvator and fourth AND element, and fourth adder, the input of which is connected to the output of the first buffer register and the output to the input of the third adder, the output of the counter is connected to the input of the decoder, the output; F1 of the step voltage generator and the integrator are connected to the inputs amplifier vertically): deviations, inputs of the second buffer register are connected to the outputs of the synchronizer and the output register, and 1MLFED - from the second cyhwaTopcw, the output of which is connected to the first adder, other inputs of the OR element are connected to the outputs of the third and fourth elements, And, and the output - to the input converter code analog. The drawing shows a functional diagram of the pag. 1 of the ego device. The device for displaying information on the screen of a cathode-ray tube contains a generator 1, a synchronizer 2 connected to a recording unit 3, a reading unit 4, an input register 5 connected to a buffer memory unit 6, an horizontal scanning unit 7 connected to a synchronizer 2, exit register d. with one input connected to the first buffer register 9 and synchronized | ohm 2, and the other input is tf by the backlight unit 10, the second and fourth buffer registers 11 and 12, with one input of the fourth buffer register 12 connected to the input of the fourth adder 13 with the first input of the buffer register 9, and the second input connected to the output of the synchronizer 2 , the output of the second buffer register 11 is connected to the input of the third buffer register 14 and to the input of the second adder 15, the second HHseipTop 1b are connected to the third sugmat 17 and the fourth buffer register iiJ, counter 18, connected to the daaum generator 19, first inverter 20 connected to the first input of the adder 21, the second input of which with the second adder 15, and the output with the first buffer Ufcw perKCTjpoM 9, the generator 22 of the step voltage connected to the counter 18, the elements AND 23-26, the outputs of which are connected to the element OR 27 and the integrator 28, the second inputs of the AND 23-26 elements are connected to the outputs of the decoder 19, the second buffer register 11, the first adder 21, and the third cy “iiaTopa 17, respectively, reprogrammed 29 code analog, connected with an amplifier 30 vertical“ ( n n with the element OR 27 e ectro "VO-beam truSku 31 CRT, block 32 The power supply, the deviation of the Khtsu system is a CRT 31, “34 tire bus 34 and a 35 CRT modulator 35. Applying the work of the system on a bus to improve the performance of the meter, for example; measures, velocity V and acceleration of the movement of the carriage on the air support and display on the CRT of the curves of the path S, velocity V and acceleration and not with the frequency of this process | 0.1 Hz - 1 Hz), but with a frequency equal to or critical flicker frequency (QM M7 /: 50 Gc). Each ordinate point of the curve (path S) of the displayed process encodes with an eight-bit code, i.e. single byte word. These words are written into the buffer memory block during the CRT beam reverse {one word with one reverse stroke), and during the forward run, all information recorded in Him is read. Writing one word during the reverse and reading during the forward run of the previous curve and the Sanny curve creates, on the CRT 31 screen, the effect of prioritizing the curve of the displayed process in real time, i.e. simultaneously with the study of a physical process. For greater consistency, the CRT is closed for the return time of the beam and for the time when the codes of the ordinate O.OOOOOOO ordinate points, the latch pulses of the CRT 31 are formed by the luminance unit 10 In view of the fact that, in unit 6, only one bit of

.1030838 VA, at the entrance and exit, you must have registers 5 and 8, respectively. In the input register 5 information comes from the information bus 34 in a parallel eight-bit binary code, and the info record is recorded on the front (it is the pulses following the frequency f / 8 received from synchronizer 2. After the recording, the information is shifted pulses, followed by frequency i, and fed to the input of block 6. A uniform current in the frame deflecting coils of the deflecting system 33 is formed by the horizontal scan unit 7 to which the pulse% 1 synchronizer arrives from the synchronizer 2. Thus when the frequency changes {the frequency of sync 1f 1X pulses changes. The address selection and formation of pulses that ensure the operation mode of block b are made during recording by block 3, during reading by block 4. The information of the displayed process when reading block 6 as a sequential code goes to output register 8. The leading edge of the pulses, following them with the frequency f / 8, information in the form of an eight-bit word enters the buffer register 11. As when reading information from block 6, the process is displayed as discrete values (every value of the ordinate of the curve, for example, path S, to Eight predstavlenno dnym word on is possible to calculate the increment h. This requires remembering the previous value of the path BI. The code mapping S g is rewritten into buffer register 14 from register 11. At the same time, the code representing path 5 from register 8-b is rewritten. register 11. This rewrite takes place at the keicdome of the leading edge of the pulses, which follow at a frequency of B / 8 / input from one of the synchronizer 2. Thus, there are always two values of the path information — the preceding and the present, then for. calculating the increments of the iS path, suck the reverse code (the inversion of code 8 is performed by inverter 20) and the code on the adder 2: 1. In order for the summing results to be always positive, which is necessary for further processing of the signal, the code of the number is summed with the code of a constant number on the adder 15. The code of a constant number Q must be greater than or equal to the maximum value of the code L9. With a known value of & $ and with a discrete quantization of time At (determined by the frequency of setting the generator 1), the windiness.

To get the code values, display1 (acceleration}, you must remember the previous value of the codes in the buffer register 12. Display code V is overwritten into buffer register 12 from register 9, B register 9 is simultaneously rewritten code that displays the speed-U from the spectator 21. This overwriting as well as the rewriting of codes / displays of the put occurs on each forward pulse, followed by 1/8 of the frequency and coming from synchronizer 2. It has two values for the speed information fnpejijaecTByiofiiee Vf and the present V) t for calculating the distance control, for this on the adder 17, the inverse code Q is summed (and the inverse spreading code takes the inverter 16 s

ASfQ.

In order for the results of the cy (g) to be always positive, the code of the number) on the adder 13 is summed from the constant number Q.

The code of a constant number Q must be greater than or equal to the maximum value of the code DV.

As a result of summation, (dsc + Q) 4 is obtained (d + f Q

-. ..;

moreover, D9 / 2-D5-L6, O. with discrete time slicing.

Thus, it is possible to calculate information on the speed and acceleration of body motion (Xo), and for a time equal to the duration of eight pulses, speding with a frequency f will create a display & Ie value mapping (in the form of eight-bit words) path S, velocity Y and acceleration and g prstraggioshchy respectively from the buffer register 8, adders 21 and. 17

  Based on the speed of the applied memory (block b), for example, 565 RU 1A, in which the regeneration of one address must be at least 0.4 of the ISS, the maximum frequency

. The maximum horizontal scanning time on a CRT is equal to the duration of 4096-TY pulses, this is the time to read the entire memory during forward motion and the duration of 256 pulses during reverse.

40964256 4352 imp, 0.4 MKCi.4352 1740.8 ISS.

Horizontal frequency is equal to

j jg-g-O, 000574 MHz to 574 Hz.

five

With a frequency of 2.5 MHz, the sweep time of the displayed process is calculated as follows. One point of the ordinate of the curve is displayed eight times, the number of points displayed is equal to

 points

Since a point is recorded during the return stroke, each new point is shown on the CRT screen via the 1740.8 ISS, and the whole process is displayed in a time equal to

1740.8 MKS.512, 891289.6, 89 p.

The echo will be the maximum scan time of the @ 4th process at a flicker frequency equal to the horizontal scan frequency on a CRT of 574 Hz.

The maximum sweep time of the displayed process is calculated from the minimum horizontal scanning frequency of a CRT equal to the critical flicker frequency, i.e. 50 HZ.

, 48 - this number determines

how many times can the frequency be reduced l –f | yjP 0.218 MHz,

at the same time, the sweep time of the displayed process is increased by 0.89 s 11, 22 s.

TiaKHM, by smoothly varying the frequency of master oscillator 1 in the range from 2.5 Hz to 0.218 MHz, it is possible to smoothly change the sweep time of the displayed process from 0.89 s to DO, 22 s.

 To display the three curves of the information of the path S f speed V and acceleration O on the screen of a single beam CRT, the proposed device uses a counter 18 decoder 19 and elements K 24-26, which represent a commutator.

Since the info {% aci of one point of curves 6, VrO does not change over a period of time equal to the duration of eight pulses followed by frequency I, the luminescence duration of one point can be taken equal to the duration of two ishguls, i.e. switching frequency will be equal to f / 2. Since a time equal to the duration of six pulses will be used to display the three curves, the time equal to the duration of two pulses will be backed up. In the prearranged device, the CRT is not locked at this time and therefore every third point is highlighted a little brighter. For offsetting relative to each other on the screen of a CRT, a 22 step speed generator is used.

Claims (1)

DEVICE FOR DISPLAYING INFORMATION ON THE ELECTRON BEAM TUBE (CRT) SCREEN, containing a serially connected master oscillator and a synchronizer connected to recording and reading blocks connected to a buffer memory unit, a backlight unit connected to a CRT modulator, an input register, a horizontal scan unit output register, first buffer register and sequentially. connected by a code-to-analog converter and a vertical deviation amplifier connected to the CRT reject system, the input register input is connected to the synchronizer and is the information bus of the device, and the output is to the memory buffer unit, the horizontal scan input is connected to the synchronizer, and the output to the reject system CRT, the inputs of the output register are connected to the output of the synchronizer and the output of the buffer memory block, the input of the buffer register is connected to the input of the synchronizer, characterized in that, p. In order to simplify the device when displaying several processes related to each other but time, it contains series-connected counter and step voltage generator, series-connected decoder, first AND element and integrator, series-connected second buffer register, third buffer register, first inverter, per- _{I am the} second adder, the second AND element, and the OR element, the second adder, the third AND element, connected in series - the fourth buffer register, the second j inverter, the third adder and the fourth and /} the fourth element And and the fourth adder, the input of which is connected to the output | {^ 2 "of the first buffer register, and the output is -I to the input of the third adder, output 3 of the counter is connected to the input of the descrambler, the outputs of the step voltage generator and integrator are connected to the inputs an amplifier of vertical deviation, the inputs of the second buffer register are connected to the outputs of the synchronization and output signals of PAGIATPYA. and YANULP-IL ”of the mash and the output register, and the output is by the second adder, the output of which is connected to the first adder, the other • inputs of the OR element are connected to the outputs of the third and fourth AND elements, and the output is connected to the input of the code-analog converter.