SU560247A1 - Device for displaying information - Google Patents

Description

I

The invention relates to the field of automation and computer technology and can be applied in automated control systems (ACS) of technological processes for displaying information on electron-tube tubes (CRT).

Information display devices are known on a color television receiver screen, comprising serially connected communication units, a buffer memory, a symbol generator, a color control unit, and a television indicator, which use a common character display method of both alphanumeric and graphical technological information.

The disadvantage of these devices is the need for a large amount of memory of the central processor of the ACS for xp, for the display of information. In addition, the volume of the buffer storage device. (Memory) should be equal to the number of familiarity on the screen of the indicator.

It is also known to be closest to the invention in a device for displaying information, comprising series-connected communication blocks, keyboards, slide changers, a transmitting television camera, an indication, a color control unit, a symbol generator, a switch of character codes and a character register.

a buffer memory unit connected to an address counter, address registers, the first of which is connected to the output of the communication unit, in common with the buffer memory unit, the mode selection register and accessories, colors.

A screen image of a known device is formed by overlaying static and dynamic information. Permanent information (mimic diagrams, tables, inscriptions) is stored in the device in the form of slides (pictures) that are displayed on the screen via the transmitting television camera at the call of the operator. The dynamic part of the image is

alphanumeric information (technological parameter values, operator tips, etc.) that enters the display device from the processor as binary character codes and is stored in a buffer memory block.

During the regeneration process, the image of the codes of the characters, of the tin is extracted from the buffer ammonium and the corresponding symbols are displayed on the screen superimposed on the static image.

In addition to character codes, information should be stored in the buffer memory, indicating where the given number or letter of message is located in the screen.

.; Inter color, which leads to an increase in the size of the buffer memory or the use of non-special control words. In this case, the speed of the buffer memory is doubled, since for the character image it is necessary to read the character code and the control word from the memory. This is a disadvantage of known devices. Another disadvantage is the low speed of receiving information from the processor, due to the fact that the processor has to wait for the moment of data output, and this causes unnecessary expenditure of processor time and complicates the organization of communication between display devices and the processor. The purpose of the invention is to expand the functionality of the device. This is achieved in that the device contains a parameter selector unit, one input of which is connected to the communication unit, another input to the keyboard unit, and output to the buffer memory unit, which is connected to the character code switch, color switch, character code register and a mode selection register whose output is connected to a color switch, a character code switch, a symbol generator, and a color control unit connected to a color switch. The output of the character code register is associated with the character code switch and the color switch, the output of the first address register is with the input of the second address register, which is connected to one of the inputs of the address counter, the other input is connected with the output of the third address register, and the output of the address counter is connected to inputs of the first and third address registers. The block diagram of the proposed device is shown in FIG. 1. The device contains an indication unit 1, a transmitting television camera block 2, a slide changer block 3, a 4 character generator, a color control block 5, a buffer memory block 6, an address counter 7, symbol code 8 and mode selector 9 registers, character code switches 10 and colors AND, registers 12, 13, 14 addresses, communication unit 15, parameter selection unit 16, keyboard unit 17. Display unit 1 - a serial color television receiver. The television video signal of a static image is generated by a transmitting television camera according to a pattern that is selected by a block of 3 shift slides. This unit contains a slide carrier, a light source, a motor, and a control circuit. The code of the figure number is set by one controller through the block 17 of the keyboard. The dynamic symbol information enters the device from the processor or centralized monitoring machine (MSC) via communication unit 15 and is stored in block 6 of the random access buffer memory during the image regeneration process. The alphabet of characters includes decimal digits, Russian letters, punctuation marks, and a set of special characters for depicting graphs, cartograms, and the position of control organs. Characters are encoded with standard seven-bit binary codes. The generator 4 converts the binary codes of the symbols arriving from the buffer memory block 6 into a sequence of pulses controlling the strength of the television sweep beam. There are two main options for using a device in an automated control system: working with a processor and working with an autonomous machine of centralized control. When the device operates with a processor, dynamic information comes from the processor and is recorded in the buffer memory block 6 as a sequence of double-byte (16 bits) information and control words. The structure of the word is shown in FIG. 2. Here is indicated: a - information word of alphanumeric data; b - cartogram information word; c, d are respectively control words for alphanumeric data and cartograms; x - this bit is not used. Information words of the first type contain codes of two characters from the alphabet of the device. Another type of information word is used to display a cartogram and contains information about the color of the six cartogram elements. The control words indicate the familiarity number on the screen from which the display of the number, phrase or section of the chart begins, and also contain information about the color of the characters and the blinking sign. Numbers, texts and special characters can be placed on the screen by familiarity in random order. In the image regeneration process, the control and information words are sequentially read from the buffer memory block 6. The next control word is located at the output of the buffer memory block until the television sweep line reaches the familiarity mark indicated in it, and the comparison with the current familiarity number is performed two times ahead of the clock. After that, the control information about color, blinking and display mode (alphanumeric or cartogram) is stored in mode selection register 9 and the display of characters whose codes follow this control layer begins. Each information word in the Ufer memory block contains alphanumeric codes of two characters, therefore, the first character of the first character is immediately transmitted to the generator 4 by the switch 10, while the second character code of the word is written to the register 8. This code is fed to the generator by the switch 10 in the next cycle . In this cycle, reference to the block of buffer amie for the information word is no longer necessary, therefore the tact is used to read the next control word, if there is one. Thus, during the period of time corresponding to one familiarity on the screen, no more than one access to the buffer memory occurs, which allows the device to use a slower and, therefore, more simple memory.

The switch 10 of the character codes operates in the display mode of alphanumeric information and switches signals from two directions, the switch 11 colors in the display mode of the cartogram and commutes the color codes of the six characters of the cartogram. At the same time, the generator 4 characters from register 9 receives a mode signal, according to which generator 4 displays cartogram symbols on the screen.

A full raster is used to represent all the characters. In this case, one line of characters on the screen is composed of n (for example, ten) lines of a television scan.

Therefore, on each of the n television lines, the same sequence of control and information words must be supplied to the input of the 4-character generator. This is done using a register of 12 addresses. Before the start of the first of these television lines, the contents of the counter 7 addresses are stored in register 12. Next, at the beginning of each of the subsequent n-1 television lines, the address code is rewritten from register 12 to the counter 7 addresses by restoring the sequence of accesses to the buffer memory block b. Thus, on all television lines constituting a single character string, the same cells of the buffer memory are accessed.

The address registers 13 and 14 allow writing to the buffer memory data arriving from the processor at arbitrary times without distorting the image on the screen.

Upon receipt of the next data array or a single word from the processor, the address of the buffer memory cell is received, from which the array should start recording. The address is stored in the address register 14 and then, when the information word arrives from the processor, is rewritten to the address counter 7 for writing to the block b of the buffer memory.

After the word has been written down, a unit is added to counter 7, and then the information in the ring is cyclically shifted: counter 7 — register 13 — register 14 — counter 7. Starting from the next TV line, the device returns to interrupted writing to the buffer memory block the screen. In this case, register 13 contains the address of the buffer memory location for recording the next information word from the processor. The proposed scheme provides a very low delay in writing data to the buffer memory from the processor (no more than 3 microseconds), so the input speed can reach 100,000 words per second.

In the work of working with an autonomous centralized control mask (), parameter block 16 is used. When working with the MSC, only digital dynamic information is used in the form of technological parameters. The MSC, in series with the frequency, supplies the input of the communication unit 15 with binary-decimal codes of the values of all measured parameters, their numbers and signs of deviations from the norm. The display device selects from this set only those parameters that are displayed on the screen in the operator-initiated fragment, and writes them into the b block of the buffer memory indicating the location of the numbers on the screen, their color and the sign of blinking.

The parameter selection unit 16 comprises a constant memory and a comparison circuit.

Each cell of the constant memory unit 16 contains the code of the parameter number and the address of its location on the screen. Parameters are grouped by arrays in accordance with displayed fragments. When the operator calls the block 17 of a fragment in the memory of block 16, a corresponding array of parameter numbers is called.

The number of each parameter entering block 15 of the communication from the MSC is compared to all the numbers of the called array by the comparison circuit of block 16. When the parameter numbers match, the control word in block 6 of the permanent memory of block 16 rewrites the control word indicating the location of the parameter on the screen, and the next two cells of the block of buffer memory record the three-digit numbers of the parameter value and the key code. The buffer storage block is filled with dynamic information received from the MSC.

Claims (1)

Invention Formula A device for displaying information comprising serially connected communication units, keyboards, slide changers, a transmitting television camera, indications, a color control unit, a symbol generator, a switch of character codes and a symbol code register, a buffer memory block connected to an address counter, address registers the first of which is connected to the output of the communication unit connected to the buffer memory unit, a mode selection register and a color switch, characterized in that, in order to extend the functionality, it is neighbors a parameter selector, one input of which is connected to a communication unit, another input to a keyboard unit, and an output to a buffer memory unit, which is connected to a character code switch, a color switch, a character code register and a mode select register, the output of which connected to a color switch, a character code switch, a character generator and a color management unit connected to the color switch, the output of the character code register is connected to the character code switch and the color switch, the output of the first address register is connected with the entrance of the second the address register, which is connected to one of the inputs of the address counter, the other input of which is connected to the output of the third address register, and the output of the address counter is connected to the inputs of the first and third address registers, figure 1 O 1 2 3 t- 5 G 7 s Yu and g "f5