SU1605279A2 - Device for displaying information on gas-discharge indicator board - Google Patents

Abstract

The invention relates to automation and computing and can be used in sign display systems. The purpose of the invention is to expand the field of application by providing the possibility of increasing the amount of displayed information. The goal is achieved by introducing a register, a second code converter along the X-coordinate, and a multiplexer, which ensures optimal placement of character information next to the graphic one, because the character string can start with any electrode of the gas discharge display panel. 2 hp ff, 1 tab., 4 ill.

Description

The invention relates to automation and computer technology and can be used in display systems for signographic information made on the basis of matrix indicators, in particular gas discharge display panels (ACI) of alternating current, and is an improvement of the device according to the author. St. No. 1119065.

The purpose of the invention is to expand the field of application by providing the possibility of increasing the amount of displayed information.

FIG. 1 shows a block diagram of the device; in fig. 2 - the address block is functional; in fig. 3 - functional diagrams of code selectors along the X and Y coordinates; in fig. k - functional diagram of the X coordinate transducer.

The device contains an interfacing unit 1, a first decoder 2, a memory block 3, an address generation block C, a code comparison block 5, a code selector 6 on the X coordinate, a code Y selector 7, a generator 8, a first code converter 9, an encoder 10 , synchronizer 11, voltage supporter generator 12, pulse generator 13, keys on X 14 and on Y 15 coordinates, gas discharge display panel 1b, register 17, multiplexer 18, converter 19 on X coordinate.

The address generation unit 4 comprises first 20 and second 21 switches, first 22 and second 23 counters. The selector 7 for Y contains a counter 24, the first 25 and the second 26 switches, the converter 27 codes. Selector 6

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on X contains a decoder 28, the first 2U and the second 30 and the third 31 switches.

Converter 19 through X contains switch 32 and shift register 33.

The device works as follows.

A device for displaying information on a GUI has three autonomous modes of operation: display of graphical information, alphanumeric information, and display mode of alphanumeric information with a shift.

The first mode is relatively simple and consists in quickly writing to the memory block 3 the X and Y coordinates of all points constituting a part of the image and their subsequent slow transfer (with pauses of 20 µs between bytes) to the display.

Each point of the screen is determined by two information bytes (8-digit codes of X and Y coordinates), successively arriving at the input of the conjugation block 1 and further to the first information input of the memory block 3. If the memory capacity is chosen to be 1024 bytes, then you can take a fragment of

razheni at 512 points. Only after re

By giving the X and Y codes of these points, the next array of graphic information can be received on the display. However, a memory of 102 bytes is sufficient to store 800 character codes; therefore, it is impractical to use a memory with a large volume due to the complexity of the equipment and a significant increase in power consumption. The information (codes X and Y) read from memory block 3 is transmitted through code selectors along the X and Y coordinates to the display. In the graphic information display mode, blocks 5, 8, 9, and 10 do not participate in the work.

The transition to the second mode occurs when a byte of the corresponding command is received, followed by a command tag.

In the second mode of operation (when displaying alphanumeric information), two address bytes first go from the source to the input of the interface block, defining the line number and familiarity number in this line where the first character of the information array should be placed. Starting from the third byte, followed by codes of symbols and commands (in arbitrary alternation).

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but command codes are always accompanied by a command tag signal, which is transmitted via the remote;; line through the decoder unit 1 to block 2. Moreover, the action of the incoming command is extended to subsequent characters until a cancel command is issued. The command set is limited and includes: increasing the size of characters, highlighting a character with a stroke on top or side, displaying characters in reverse contrast, flickering a character at a frequency of 1-2 Hz, moving a marker (rectangle 5 X 7 light points) in one of four possible directions. The command bytes are interpreted by the decoder 2 and transmitted from its outputs to the corresponding blocks for execution. A part of the commands related to the modification of the character type is transferred from the output of the decoder 2 to the encoder 10, where it is again converted into a 4-bit code. Since the information inputs of the memory block 3 can receive 12-bit codes, and the input information comes in the form of 8-bit codes, each word in the memory 3 is under-used by 4 bits. These. The bits are occupied by the character modification code of the characters from the output of the encoder 10. Thus, the codes of the individual characters are supplemented by the corresponding characteristics, to which the generator 8 then responds. When the commands for flickering and moving the marker are received, the synchronizer 11 organizes the corresponding modes of operation. Most of the mentioned operations will be discussed in more detail below.

The write and read operations in memory block 3 are performed sequentially in time. The search of the cells of the memory block 3 in either case is performed by the address generation unit 4. Unit 4 operates in conjunction with unit 5 comparison. From the output of the conjugate 1, two address bytes pass through the first switch 20 of the block (the line number codes and the familiarity number in the line for the first character in the file) and are entered into the second counter 23 of the current address. This counter, in fact, consists of two in turn, 5 consequently connected reversible 5-bit counters, one of which produces the counting of rows, and the other, the count of familiarity in the row. Hot

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the address bytes are 8-bit, but only 5 lower bits are actually used (the number of lines and familiarity does not exceed 32), and each byte is entered into the corresponding reversible counter as part of the counter 23. Then the binary 10-bit number recorded in the counter 23 the current address is transmitted through the second switch 21 to the first poll counter 22 of the memory block 3. Counter 22 also consists of two series-connected 5-bit counters operating without reverse. The source code entered into the counter 22 determines the address of the first familiarity on the GUI 16 screen and the cells of the memory block 3 where the first character of the received file is placed. The switches 20 and 21 are set to the required state by the signals issued by the synchronizer 11. Next, the counter 22 produces the count information bytes, forming the interrogation code of memory block 3 for recording information into the memory. The various command bytes transmitted among the information bytes are not counted and are not entered into memory block 3. After the entire file is written to memory block 3, the starting address code is rewritten from the second counter 23 through the second switch 21 to the first counter 22. Then at a slow rate (approximately through kOO μs), the counter 22 re-polls the memory block 3 to read the information from the memory, which is transmitted to the generator 6 characters. The slower rate of the second interrogation of block 3 of memory is related to the fact that generator 8 converts the binary code of each character into seven or nine bits of the decomposition code, between which pauses of the order of 0 microsec are required (this is determined by the physical processes in the GUI 1b. Code interrogation of memory block 3, generated by the first counter 22, is simultaneously transmitted via selector-codes of coordinates X and Y to the display where the screen scan is created. After reading the code of the last character in the file stored in memory block 3, the counter 22 increases its condition by unit, indicating the next free memory cell where the new information can be placed.The status code of the counter 22 through the first switch 20 is rewritten into the current address counter 23. All processes in block k occur during feeding

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the corresponding clock pulses from the synchronizer 11.

In the case of the allocation of several orders of the following characters, the blinking on commands from the decoder 2 interim scanning codes of memory block 3, corresponding to the first and last characters in the flickering array, from the output of counter 22 are entered into the registers of the comparison block 5. The blink mode is organized by synchronizer 11 as follows. From the register of block 5 through the switch 21 to the counter 22 the code of the initial address of the blinking array of information is rewritten. The slow interrogation (through 400 µs) of the memory cells of block 3 by counter 22 is performed until the code at the output of counter 22 and the address code of the last character of the flickering array in the register of block 5 are equal. The equality signal of these codes from the output of the code comparison block 5 is transmitted to the synchronizer 11 and the described regeneration process of the flickering array repeats at a frequency of 1-2 Hz. In this case alternating recording and quenching commands are issued for indication. Thus, one flickering image area is reproduced on the screen, in which there can be from 1 to 800 characters, i.e. even the whole image may flicker. Array flickering continues until a command to cancel flicker is received, followed by two address bytes indicating which symbol to stop flickering from. These address bytes through the first switch 20 of the block C are entered into the second counter 23 of the current address, the output code of which is fed to the input of the block 5 of the code comparison. The received code is compared with the register code of block 5. When the code is equal, block 5 outputs a comparison signal to synchronizer 11 to cancel the blinking of the array of information.

For convenience, the operator on the screen of the GUI 26 reproduces a marker indicating the location of the next incoming character. According to commands from the source of information (from the console), this marker can be moved in any of the four directions by one 5 discrete shift (up-down, left-right). The marker is formed by the character generator 8 without supplying information codes to it from the memory block 3. Moving a marker organizes synchronization35

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mash 11 as follows. The second code converter 9, where also the counter 23 of the block k, receives signals, a separate communication link to the generator, switching it to addition or rom 8, receives a signal of the type of contrast subtraction, and a certain amount of images of this symbol. This sig pulse counts. The status code is formed from the indicative bits of the counter 23 through the second switch of the symbol code in the generator 8. If it is necessary to rewrite the first counter 22 ... there is a direct contrast, then the micro code of the state of the counter 22 is transmitted through the selector lines through the converter of codes on the coordinates X and Y re-Q codes 9 without any changes. Given the indication and setting the position, the opposite contrast is required only the position of the marker on the screen. When transmitting for 5x7 characters, the code of the microswitch of the counter 23 to the next connection is reversed, then the code.-I.e. is stored in the counter 22. G values are changed to O and the previous number, which is a poll. In addition, the symbol surrounds a block of memory 3, from which the symbol code to the generator B and further is output with additional outermost lines. and columns, due to which it acquires in the same place a hundred markers. Format 7 9. Characters of format 7 9 V are reproduced by a symbol, if it is not displayed in the opposite contrast, it was previously. Again, via the second commutation, 20 Next, the micro-string codes with emitter 21, the status code of the counter 23 of the transducer of the codes 9 are transferred to the counter 22 and are set to the code selector by the coordinate positioning of the marker on screen X 6.

not TYPE 1b, etc. So the marker moves the Code Selectors along the X coordinates for one discrete movement (at 25 and Y 6 and 7 participate in the display familiarity modes) as long as the graphic and alphanumeric-digital command arrives. Following the movement of the information, switch the previous marker on the eccentric from the decoder 2. The GUI 1b wound is first erased (indeed, in the GUI display mode, the GUI has a memory), and then the X and Y coordinate code displays Each symbol is pressed, the code of which calls the point from the output of memory block 3 in the form of from block 3 of memory at the address of the previous two 8-bit bytes arrives at the position of the marker. the second information inputs of selective information from the output of block 3 of memories 6 and 7 of codes. In the code selector 6, the code is transmitted to generator 8, the executed code of coordinate X is divided into two groups: on the basis of two permanent three lower-order memory and five high-order bits, devices (ROM). Received code sim. The three low-order bits in the wave decoder 28 serve as the starting address of the poll converted into an 8-bit positional memory of these ROMs produced by the counter (not the new code that passes through the companion shown). The interrogation of two ROMs is syn- themed for the mutator 29, and the binary 5-bit is chronically, but their outputs are gated the signal (the higher bits of the X code) are passed by the character format generated in through the switch 30. The outputs are commutator of the generator itself 8 of the indicative tori 29 and 30 are combined into bits of the character code, therefore, on the output link of the ISU 1b. The microstroxy codes are transmitted to the second. The swarm byte is 8-bit, the coordinate codes are 5 7 or 7x9. Availability 1; from the output of the memory block is transmitted in the code of each byte corresponds through the switch 25 to the output of the select- ing point in the microchip of the contour of codes 7 and further to the indication of the ra symbol. Consequently, the symbols in the alpha-format display format 5x7 are output for seven Q cycles of digital information to the third and first polling of the first ROM, and the format symbols for the new information inputs of the 6 7x9 selector are for nine polling cycles of the second. X coordinate codes arrive: 8 times ROM. The set of characters stored in the sequential code of the microstring of the character with the block of each ROM is identical and corresponds to ka 9 and 5-bit binary code of the KOI number GOST 19768-7. Management. The familiarity is in the line from block 4. These generator 8 generates syntax passing through switches 29 and chronizer 11.30 to the output of selector 6 codes, also

The output code (of any format) with the combination into a 13-bit line of the sv-generator 8 is transmitted to the first sy, and further to the indication. For the first

the information input of the selector 7 of the Y coordinate codes; a 5-bit code of the information line number from the k block is fed. Since ten GIP 1b electrodes are allocated to the line and the nearest line space, it is necessary to convert the code of the line number to the code of the number of the GUI electrode, which will be

this line is attached. The conversion code - code (line number - electrode number) is performed as follows: 1 - 1,

. 3-20, -30. .... This increases the code size from five to eight. The code from the output of converter 27 is stored in counter 24, which, according to signals from generator 8, successively increases this number by seven or nine units (depending on the format of the displayed character). Due to such an increase, a micro-string is created vertically on each familiarity of the ISU screen 1b. The code from the output of the counter 2A is transmitted through the switch 25 to the output of the code selector along the coordinate Y 7 and further to the indication.

The transition to the display mode of alphanumeric information with a shift occurs when a byte of the corresponding command arrives from the source of information to the gateway input. Then, two address bytes arrive — the eight-digit codes of the X and Y coordinates of the point, which is the origin of the coordinates in the familiarity matrix of the elements where the symbol should be placed. The third byte is followed by the command code (if modified), and then the character code.

In the display mode of alphanumeric information with a shift, the reception of the information necessary for the display of the next character is performed by the conjugation unit 1 only after the next character is displayed. In this mode, blocks 3 and 5 do not participate in the work.

The image of the symbol in the familiarity, determined by the coordinates of an arbitrary point on the indicator (shifted relative to a fixed familiarity), is as follows.

The binary code of the Y coordinate is written directly through the switch 26 (FIG. 3) directly to the counter 2k of the selector 7 of the codes along the Y coordinate, therefore in further scanning the image of the character by microstring number, write

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The cable into the 2k counter is successively increased by seven or nine units (depending on the format of the displayed symbol) by the signals from generator 8. At that, familiarity is attached to the electrode, whose Y coordinate is given by a 6-bit code.

The upper five bits of the X coordinate are written to the counter 23 of the address block k, and the lower three bits are written to the register 17. Shift block 33 of the X coordinate converter 19 (Fig. A) 15 shifts the information (micro symbol string) from the generator 8 through a converter of 9 codes per number of electrodes, which is determined by the three-digit code recorded in register 17.

Obviously, if the shift code for the X coordinate differs from O, then the microstring of the symbol on the indicator is possible only for two recording cycles, therefore, after displaying that part of the symbol that is in the area specified by the higher bits X, the contents of counter 23 of the address block k is incremented by 1 and the remaining part of the character image is recorded in the adjacent place.

The state of the outputs of the shift block, depending on the state of the control inputs, is given in the table.

Switch 18 is used to transmit a character code to character generator 8 from memory block 3 (in the information display mode without a shift) or from the 1 .. interface block (in the described mode).

In comparison with the known, the proposed device allows more economical use of the area of the GUI screen when displaying combined graphic and alphanumeric information. So, if, in a known device, the graphical information of even a single GUI electrode that falls into the character string (or familiarity) is necessary to skip at least 10 electrodes along the Y coordinate (or 8 along the X coordinate) and go to following line r (familiarity), in the proposed device, the character string can be started from any GUI electrode, therefore the GUI screen area is used more economically.

In addition, the proposed device has a higher quality.

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Because the optimal allocation of symbolic information to a number of graphical data improves the conditions of the eight informations by the operator.

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Claims (3)

1. A device for displaying information on a gas-discharge display panel according to the author. St. No. 1119065, characterized in that, in order to expand the scope of application due to the possibility of increasing the amount of displayed information, a register is entered in it, a second code converter along the X coordinate and a multiplexer, the first information input of which is connected to the output, and the second information input - the information input of the memory block, the output of the multiplexer is connected to the information input of the symbol generator, and the control input is connected to the sixth output of the decoder 1I to the control inputs of the second converter code X and register, the information input of which is connected to the third information input of the selector on the Y coordinate and the second output of the interface block, and the output is connected to the first information input of the second code converter on the X coordinate, the second information input of which is connected to the output of the first code converter the X coordinate, and the synchronous input is connected to the first synchronizer output. 2. A device according to claim 1, characterized in that the selector on the Y coordinate contains a code converter, the input of which is the first 9 12 information input of the selector 7 and the output is connected to the first information about 5 The first input of the first switch, the second information and control inputs are the second information and first control inputs of the selector, the output of the first switch is connected to the information input of the counter, the control input of which is the second control input of the selector, the output of the counter is connected to the first information input the second switch, the second information and control inputs and the output of which are, respectively, the second information, the third control inputs and the output of the selector. 3. The device according to claim 1, wherein the selector on the X coordinate contains the first switch, the first and second information inputs of which are the first and second information inputs of the selector, respectively, and The input is connected to the control inputs of the decoder and the second switch and is the second control input of the selector, the third switch, the first and second the information and control inputs of which are respectively the third, 4etBepTbiM information and control inputs of the selector, the output of the third switch is connected to the first information input of the second switch, the second information input of which is connected to the output of the decoder, the outputs of the first and second switches are the output of the selector, the information input of the decoder is connected to the second information input of the selector. Om11 FIG. / FIG. 2 From 8 QmZOmlOmff Otz Ot280 / p9 ® ® C8) From , .From 2 3zr From 9 J3  eight physical four From 11  4 19 31 Kb