RU1807520C - Device for representing image - Google Patents

Abstract

Usage: the invention relates to automation and computer engineering and. can be used to display symbolic and graphic information on the screens of video terminal devices. Summary of the invention: the device comprises 1 write-read control unit, a memory unit, a buffer register, two delay elements, a shift register, a tri-switch, six decoders, five counters, a clock generator, two AND elements, two triggers, two key groups, element NOT, divider, gas discharge indicator panel. 1 ill.

Description

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The invention relates to automation and computer technology and can be used to display symbolic and graphical information on the screens of video-terminal devices built on gas-discharge indicator panels.

The purpose of the invention is to expand the functionality of the device by providing the ability to highlight information by oscillatory motion.

The drawing shows a functional diagram of a display device.

The device comprises a clock pulse generator 1, a frequency divider 2, a first switch 3, which serves to set the information display mode: vertical movement of the screen or highlighting by horizontal oscillation; first counter 4, third 7 and fourth 8 decoders, first, trigger 9, first 10 and second 11 AND elements, third 12 and fourth 13 counters, first 14, second 15 decoders, keys of the first group 17, read write control unit 16 providing communication of the device with an external system and controlling the recording of information in the memory unit 18, a buffer register 19 that performs a function; storing a string of displayed information; a shift register 20 necessary for arranging a shift of the extracted information horizontally on the screen; the first 21 and second 22 delay elements, which perform the function of timing the control pulse sequences in order to avoid racing: the second trigger 23, the second switch 24, the fifth counter. 25, the fifth 26. and the sixth 27 decoders, third comm00

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Tztor 28, keys of the second group 29, gas discharge indicator panel (GUI) 30.

In the device for displaying information, the outputs of the keys 29 are connected to the vertical buses of the gas discharge display panel 30, the horizontal buses of which are connected to the outputs of the keys 17, the first input of which is connected to the output of the first decoder 14. The output of the pulse generator 1 is connected to the input of the first counter 4 and the first control input of the read-write control unit 16, the second control input of which is connected to the output of the first counter 4. The control bus, information and address bus of the read-write control unit 16 These are the inputs of the device. The information inputs of the shift register 20 are connected to the (M + 1) outputs of the buffer register 19, and the clock input is connected to the first output of the first switch 3, the second output of which is connected to the input of the second counter 6. the output of which is connected to the inputs of the zero setting of the third 12 and fourth 13 counters, the outputs of which are connected respectively to the information inputs of the first 14 and second 15 decoders. The output of the pulse generator 1 is connected to the first inputs of the first 10 and second 11 AND elements and the input of the frequency divider 2, the output of which is connected to the input of the first switch 3, the output of the first counter 4 is connected to the inputs of the third 7 and fourth 8 decoders, the outputs of which are connected respectively to the installation trigger reset input 9 and 9, the output of which is connected to the second input of the first element AND 10, the input of the element NOT 5, synchronization inputs of the fourth counter 13 and the second decoder 15, the outputs of which are connected to the second input OK 17 cathode keys, the output of the element 5 is connected to the second input of the second element And 11 and to the synchronization inputs of the third counter 12 and the first decoder 14, the outputs of the first 10 and second 11 elements And are connected respectively to the summation inputs of the third 12 and fourth 13 counters, except In addition, the first, second and third outputs of the write-read control unit 16 are connected respectively to data inputs, addresses and write / read of the memory unit 18, the first and second outputs of which are connected respectively to the (M + 1) inputs of the buffer register 1 9. The information input of the second switch 24 is connected to the first input of the first switch 3, and the first and second outputs are connected to the summing and subtracting inputs of the fifth counter 25, the outputs of which are connected to the inputs of the fifth 26 and sixth 27 decoders, the outputs of which are connected respectively to the inputs settings 1 and 0 of the second trigger 23, the output of which is connected to the control input of the shift register 20, the third output of the write-read control unit 16 is connected to the input of the first delay element 21, the output of which is connected to the input

buffer register 19, the first information output of which is connected to the second input of the third switch 28, the control input of which is connected to the second output of the buffer shift register 20, the output of which is connected to the first input of the third switch 28, the output of which is connected to the input of the anode key block, the switching output of the memory unit is connected to the control input

0 of the first switch.

The device operates as follows.

The image is pre-recorded in the memory unit 18 and stored there in

5 as a binary code.

Scanning in the static display mode is ensured by alternately ° and periodically turning on the keys 17, controlled from the first 14 and second 15 de0 encoders. The outputs of the first 14 and second 15 decoders are selected by the codes of the third 12 and fourth 13 counters. At the same time, the line code from the output of the first counter 4 enters through the control unit 5 by writing or reading to the address inputs of the memory unit 18, providing an unambiguous correspondence of the cells of the memory unit 18 and the indicator elements to the horizontal gas-discharge indicator

0 of the panel 30. At the beginning of each scan cycle, the write-read control unit 16 organizes the reading from the memory unit 18 into the buffer register 14 of information on the state of the elements of the line included

5 in this measure M by the key key 17, In accordance with the state of the buffer register 19, the keys of the anode key block 29 are turned on, forming a sample voltage on the corresponding vertical buses

0 gas discharge indicator panel 30. When moving to the next measure, this key of the clock key block 17 is turned off, which leads to the termination of the discharge in the gas discharge gaps of the GUI line 30,

5, the next key of the cathode key block 17 is turned on, and the image forming process is repeated already in the next line of the GUI 30.

The line scan frequency is selected so that the image regeneration frequency is greater than the critical frequency of the flicker, providing a clear picture of the image and the absence of the strobe effect. The reference frequency necessary for the operation of the device is generated by the pulse generator 1.

In the mode of movement of information in the vertical direction of the ISU 30, the frequency, which sets the speed of this movement and provides a frequency divider 2 through the switch 3, is supplied from the output of the divider 2 to the input of the second counter 6. Switch 3 is in the simplest case a toggle switch. The first 14 and second 15 decoders, as well as the third 12 and fourth 13 counters work alternately. The first half of the GUI lines 30 are sequentially driven by the keys of the cathode key block 17 controlled by the first decoder 14, and the second half of the GUI lines 30 by the keys 17 controlled by the second decoder 15. Smooth vertical movement of information occurs as a result of periodic change of the entered on the installation inputs of the third 12 and fourth 13 counters of a monotonically changing initial installation code. This code comes from the output of the second counter 6.

During the excitation of the first half of the screen lines of the gas discharge indicator panel, the installation is entered at the installation input of the fourth counter 13. During the operation of the fourth counter 13, the initial state is entered at the installation input of the counter 12 in the size of the serial counter. The signal arriving at the installation inputs of the third 12 and the fourth 13 counters and at the same time allowing the passage of the clock frequency through the corresponding element And 10 or 11 to the counting input of another counter, a trigger is formed erom 9. At the same time, this signal resets alternately-state first and second decoders.

The signal at the output of trigger 9 is generated as follows. The conversion factor of the first counter 4 is equal to the number of rows of the gas discharge indicator panel 30. The state of the first counter 4 is decoded using the third 7 and fourth 8 decoders at the time of excitation, and a signal is generated at the output of the trigger 9.

The selection of information fragments by oscillatory movement horizontally relative to its normal position is carried out when the switch 3 feeds the frequency to the clock input of the shift register 20 and by means of the second

switch 24 to one of the inputs (summing or subtracting) of the fifth counter 25.

Depending on the value of the signal at the control input of the shift register 20, the information in it is shifted either to the left or to the right. With a periodic change in the signal at its control input, formed with a period of switching the state of the second trigger 23, information.

0, formed at the output of register 20, oscillates relative to its normal horizontal position. Depending on the bit of the sign of information extraction, coming from the second output of the buffer register 19 to the control input of the third switch 28, the block of anode keys 29 is controlled either by static information (in the display mode without allocation

0 horizontal oscillation) coming from the input of the shift register 20, or from its output when the information is oscillatory,

The signal formation at the output of the second trigger 23 occurs as follows.

When one of the decoders 26 or 27 is triggered, when the pulses arriving at one of the inputs of the fifth counter 25 are counted, the trigger 23 switches and, acting on the control input of the second switch 24, initiates the frequency supply to the other input of the counter 25. (If the counter 25 summed the pulses, then they arrive at

5 his subtractive input and he will subtract them). Then another decryptor fires, and the trigger switches again. Depending on the conversion factors of the counter 25, the desired

0. period of horizontal oscillation of the extracted information.

Some additional notes on the structure and operation of the device. In order to better understand the essence

5 of the invention with respect to the connection of the outputs of the PSU 18 to the (M + 1) inputs of the BR 19 it is emphasized that in the proposed device, the input of the buffer register 19 has 1 bit more than in the prototype. This bit is used to determine horizontal information generated by vibrations. This bit controls the switch 28, connecting to its output information from the output of the buffer register 19 (static), or

5 shifted left and right horizontally from the output of PC 20 (dynamic).

When the input frequency is connected to the input of the counter 6 using the switch 3, the device provides a mode of movement of information along the vertical screen (opi-.

in the prototype itself). When this frequency is applied to the input of the shift register 20 in the device, information is extracted by oscillatory motion in the horizontal direction of the screen.

The input of the device receives information similarly to the prototype. An exception is the presence of one extra bit, which is a sign of a message emitted by a wobble. In addition, all external exchange in the device is similar to the exchange in the prototype.

The bias amplitude of the extracted information is selected at the stage of designing the device by determining the highlighted states of the decoders 26, 27 depending on the frame format, and is selected so that there is no overwriting of adjacent messages to be highlighted.

The presence of several types of message highlighting reduces the time for operators to search for messages of interest. Unlike melkan, messages emitted by oscillation are easily read by the operator. At an oscillation frequency of the order of HZ messages, they are quickly detected by the operators and easily calculated.

Thus, the inventive device allows increasing the speed of information perception by operators by highlighting the most important information by oscillatory horizontal movement of the screen relative to its normal position.

SUMMARY OF THE INVENTION A device for displaying information comprising a write-read control unit, information, address and control inputs are information address and control device inputs respectively, a sync input of the write-read control unit is connected to the output of the clock generator, and the outputs connected respectively to the information, address and control inputs of the memory unit, the first output of which is connected to the information input of the buffer register, the first output of which th connected to the data input of a shift register, a clock input coupled to the first output of the first switch, the second output of which is connected to the counting input of the second counter whose output is connected with setting inputs of the third and fourth counters,

the outputs of which are connected to the information inputs of the first and second decoders, the control inputs of which are connected to the control inputs of the third and fourth counters respectively, and the output and input of the element NOT, the outputs of the first and second decoders are connected to the key inputs of the first group, the outputs of which are connected to cathode tires

a gas-discharge indicator panel, the anode buses of which are connected to the outputs of the keys of the second group, the output of the clock generator is connected to the first inputs of the first and second elements And,

the information input of the fourth decoder and the counting input of the first counter, the output of which is connected to the clock input of the write-read control unit and the information inputs of the third and fourth decoders, the outputs of which are connected to the installation inputs of the first trigger, the output of which is connected to the input of the element NOT and the second input of the first element And, the second entrance of the second

element AND is connected to the output of the element NOT, characterized in that, in order to expand the functionality of the device by providing the ability to highlight information

oscillating motion, two delay elements, two switches, two decoders, the fifth counter and the second trigger, the installation inputs of which are connected to the outputs, respectively, are introduced into the device

the fifth and sixth decoders, the information inputs of which are connected to the output of the fifth counter, the summing and subtracting inputs of which are connected to the first and second outputs of the second gamma switch, the control input of which is connected to the first control input of the shift register and to the output of the second trigger, the information input the second switch is connected to the first output of the first

the switch, the control input of the memory unit is connected to the input of the first delay element, the output of which is connected to the control input of the buffer register and the input of the second delay element, the output of which is connected to the second control input of the shift register, the first and second information inputs of the third switch are connected respectively with the information input and output of the register

5 shift, and the control input of the third switch is connected to the second output of the buffer register.