SU1084864A1 - Device for displaying information on crt screen - Google Patents

Abstract

A device for displaying information on the screen of an electron-beam tube containing a synchronization unit, the input of which is connected to one of the outputs of the tabulation unit, the first and second outputs of the synchronization unit are connected to the corresponding inputs of the frame scanning unit, the third output is connected to the input of the tabulation unit, the fourth output - to one of the inputs of the symbol generator, the first output of which is connected to one of the inputs of the vertical scanning amplifier, the second and third outputs - respectively to one of the inputs of the horizontal amplifier of the aggregate and the luminance modulation unit, the output of which is connected to a CRT modulator, the outputs of the vertical and horizontal scanning amplifiers are connected to the sign diverting system, the outputs of the horizontal and vertical scanning blocks are connected to the raster deflection system, the first input of the horizontal scanning unit is connected to the second output the synchronization block, the second input to another output of the tabulation block, characterized in that, in order to increase the accuracy of the device by adjusting the intervals between symbols and indexes, Consequently, the connected register, the memory block of indicia indices, the adder, the first, second triggers and the operational amplifier, the output of which is connected to another input of the vertical sweep amplifier, the inputs of the operational amplifier are connected respectively to one of the outputs (L of the first and second triggers, one of the inputs which are connected to the fourth output of the symbol generator and the register input, and their other inputs are connected to the outputs of the index feature memory, the register output is connected to another input of the symbol generator c, another adder input is connected to the fifth output of the synchronization unit, and its output is connected to the third input of the horizontal scanning unit. 00 O5

Description

The invention relates to computing technology and can be used in devices displaying alphanumeric information on cathode ray tube (CRT) screens. A device for displaying information is known, comprising blocks of line and frame scans, connected respectively to the registers of the X and Y coordinate codes and the coordinate deflection system, the symbol generator and sign amplifiers associated with the sign deflection coil, digital-analog multipliers and logic unit, connected to the registers of the coordinate codes X and Y and the digital-to-analog multipliers connected to the sign amplifiers 1. A disadvantage of the known device is that it does not provide an interchange in between characters i5, depending on their size, and not allowing for the reproduction of characters in the form; k) case, 1st degree or subscripts. Conclusion; 1and P) 1e on a CRT screen, the characters (lowercase letters, numbers, signs and signs) have different Hirin, and therefore, at even discrete shifts of the beam, but horizontally, non-uniform intervals between letters in the word (extended intervals cause a visual break, words are written in short letters and make it difficult to read). The impossibility of representing images of degree and subscripts necessitates the display of multi-digit numbers or verbalization, which reduces the image quality and reduces the amount of information displayed. It is also known a television display device of the information, containing three blocks for us, the register is a string, a symbol reEieter, a modulo block, a CRT, a control unit, a symbol code regimenter, a counter, a block of analysis of the number of character strings, a block В1 : boron st) ok, in a definite way, st. This device can display multi-scale wavelengths: in arbitrary specified areas of the CRT screen (including in the form of PLP levels of HERBAL INDEXES) 2. However, using the technology and technical changes (TV raster) Eie can be used in devices with discrete scan raster and functional character playback. In addition, this device can not reproduce tables with extended intervals between columns of numbers without losing IE | form1E.i. in each row. The closest EEO technical sui to the present invention includes a device for displaying information on a CRT screen, containing a synchronization block, connected to a symbol generator, line and frame scanning blocks, the outputs of which are connected to Yekami CRT, the output of a symbol generator connected to trigger that is connected to the modulation unit, connected to the modulator of the CRT, serially connected distribution, the agent and the unit of elements OR, and the switch, which represents a to the tabulation, the first input of the distributor is connected to the synchronization unit, the second input is connected to the E-generator of characters, another input of the switch is connected to the vertical scanning unit, and the output to the horizontal scanning unit 3. However, the device provides only the tabulation of EFU columns and not can change the intervals between the MEI symbol depending on their width, and also not ms; it can reproduce small-sized SIMEio .. B in the form of degrees or subscripts. The indicated disadvantages (Erivod to uneven tone textual or tabular image, which can be characterized in a low image quality. The purpose of the invention is to increase the accuracy of the device by adjusting the interval between the lines and indices. The goal is to achieve Eia information of a CRT screen containing a synchronization unit, the input of which is connected to one output of a tabular block, the first and second outputs of the synchronization unit are connected to the corresponding EOE; I will give a frame scanner unit, the third output is to the input of the taboo block; 1ЯEi1i; the fourth output is to one of the inputs of the E-generator characters, the first output of which is connected to one of the inputs of the vertical scanning amplifier, the second and third OUTPUT are correspondingly one of the inputs of the horizontal amplifier sweep and luminance modulation unit, the output of which is connected to a CRT modulator, exits the power; With its vertical and horizontal sweeps, it is connected to the sign-off deflection of the system Ee, the outputs of the horizontal and frame sweeps are connected to the raster With the second deflection system, the first input of the horizontal scanning unit is connected to the second output of the synchronization unit, the second input is connected to the other output of the tabulation unit, entered by It is successively connected to the register, the block of index indices, sum.mator, first and second triggers, and operative amplifier. The output of which is connected to another input of the amplifier vertical sweep, the inputs of the operating amplifier are connected respectively to one of the outputs of the first and second triggers, one of the inputs of which are connected; It is connected to the fourth entrance. the character generator and the input of the register, and their other inputs are connected to the outputs of the block, the index memory of the indicia, the register output is connected to another input of the character generator, another adder input is connected to the fifth output of the synchronization block, and its output is connected to the third input of the lowercase sweep. FIG. 1 shows a block diagram of a device for displaying information on a CRT screen; in fig. 2 - time diagrams of signals that explain the principle of operation of the line scanner; in fig. 3 - a fragment of a tabular image on a CRT screen; in fig. 4 is a block diagram of the synchronization unit; in fig. 5 - structural cjceftfa character generator. The device contains a synchronization unit 1; 2 character generator, vertical 3 and horizontal 4 symbol sweep amplifiers, luminance modulation unit 5, vertical scanning unit 6 consisting of a pulse counter 7, a digital-to-analog converter (DAC) 8 and vertical scanning power amplifier 9, unit 10 scanner, consisting of the register 11 code of the table column number, two DACs 12 and 13 and the amplifier 14 of the power of the horizontal scanning signals of the raster, tabulation block 15, register of the 16 character code, block 17 of the indicia of indices, adder 18 two triggers 19 and 20 and operational wuxi Model 21, which is a block of 22 indexes, a CRT 23 with a raster deflection system 24 and a sign deflection system 25. Communications between nodes and blocks are indicated as follows (Fig. 1): communication lines along which 1- 3 signals are indicated by “thin arrows; lines that carry many signals or parallel codes are indicated by "thick arrows. The device works as follows. A code of characters is supplied to the input of the device, in addition to its own character code, there are signs of the size of the characters and the position relative to the middle line of the line. This code is accepted into register 16, where it is stored until the end of the character playback. The code of the symbols from the output of the register 16 is transmitted to the inputs of the block 17 and the generator of 2 symbols, which additionally receives a synchronization signal from the block 1 of synchronization. The 2-symbol generator converts the binary code of each symbol into two functional voltages of moving the beam along the contour of the symbol and into a signal highlighting the contour elements. These signals through amplifiers 3 and 4 and luminance modulation unit 5 are transmitted to the sign system of a 25 l CRT modulator 23. After displaying each symbol, generator 2 generates a signal for the end of the symbol, which makes the initial setting of register 16 and triggers 20 and 21, and also used to call the next character to display. The synchronization unit 1 generates a series of signals controlling the operation of the line 10 and frame 6 blocks of sweeps. The construction and operation of unit 1 on line 10 and personnel 6 sweeps. The construction and operation of block I. A scan of a line raster is created by block 10, which combines two channels. The first channel provides discrete movement of the beam between the first column acquaintances (if a table is displayed) and consists of a tabulation block 15, register 11, and a DAC 12. The second channel provides a discrete scan inside each column (for tables) or generates a scan of the entire row if text is displayed . Inch symbol spacing signals are output from block 17 to accumulating summator 18, where summation takes place within each column or for the entire information build. The sum code from the adder 18 is transmitted to the second DAC 13 of block 10. The outputs of DAC 12 and 13 are summed up in a power amplifier 14, the output of which feeds a deflection coil 24 with current. Signals generated in the horizontal raster channels are shown in FIG. 2. Timing diagrams are interconnected with input clock pulses (SI). At the output of the D / A converter 12, a step-shaped voltage with "large steps" is created to move the beam between the columns of the table. At the output of the D / A converter 13, a stepwise sawtooth voltage is formed with "small steps to move the beam between familiarities within each column. The signals from the outputs of the D / A converters 12 and 13 are then summed and converted into a diverting current (output 14). In the case of text display, the signal at the output of the D / A converter 12 is absent, and the signal at the output of the D / A converter 13 has a duration for the entire line and coincides in form with the signal at the output of amplifier 14. After filling the line, the signals from blocks 1 reset the register 11 and accumulator 18 and the next vertical movement of the beam is formed. A vertical raster sweep is performed by block 6, in which there is a counter 7 of information lines, the state of which is then converted by means of a DAC 8 and amplifier 9 into a raster sweep current vertically. After the last line is scanned on the screen, counters 7 are reset by the signal from block 1 and the beam of CRT 23 returns to the upper left corner of the screen, i.e. to the original place of the next frame. Then the scanning of the raster and symbols is repeated.

If there are signs of superscript or subscript, the symbol code from block 17 generates a vertical shift signal, which goes to trigger 19 or 20 in block 22 of indices. The levels from the outputs of the flip-flops 19 and 20 are transmitted to the inverting or non-inverting inputs of the operational amplifier 21, and the corresponding levels of positive or negative polarity are formed at its output. The output from the operational amplifier 21 is transmitted to the amplifier 3, where it is summed with the vertical signal; the symbol sweep. At the same time, the signs of the indexes also serve as signs of reducing the size of characters, the scale of which specifies the generator of 2 characters.

A fragment of the tabular image on the screen of the CRT 23 is shown in FIG. 3, in the first column, the numbers of the conditional data K-Kj5 are indicated in the first part, and in the other columns the various multi-digit numbers are shown, expressed through the factor 10. At the same time, this significantly reduces the amount of familiarity in each column, and thereby deduces additional information ( iiaiipnmer (64 familiar places) is placed in the string). If text is displayed, then capitalized letters are 1.5 times larger than subsequent ones in the lines, and also there are designations with indices or simple formulas, which requires a change in the character spacing.

The sequence of operation of the various blocks in the device is determined by the synchronization block 1, which contains the pulse shaper 26, the signal delay element 27, the familiarity counter 28, the familiarity number code register 29, the comparator 30) odes, the column 31 counter, the image decoder 32 (table or text), the decoder 33 of the maximum allowable state of the counter 31, the AND 34 element and the frequency divider 35. The SI signals, amplified by shaper 26, are transmitted to delay element 27 and to counter 28. Element 27 provides delay for SI pulses by 5–7 µm, which is determined by the transient time in coils 24 when the beam shifts between neighboring familiarities. The delayed SIs from the output of element 27 are transmitted to a 2-character generator. SI pulses simultaneously start the counter 28, the outputs of which are under; Yucheny to comparator 30 codes. From the output of the tabulation unit 15, the code 29 enters the familiarity code in the column, which from the output of this register 29 is transmitted to the second input of the comparator 30 and to the input of the decoder 32. If the codes coincide, the equalizer signal is generated at the output of the comparator 30, which resets the counter 28 register 29 and is fed to the element AND 34,

as well as the accumulator adder soros 18. The signal from the comparator 30 also starts the column counter 31 in the table display mode. If text is displayed, then a large number of familiarity codes in the first column, i.e. the full row is considered the first column, and then the decoder 32 generates a signal.h supplied to the counter 31, which in this case translates to the latching state of the largest number. The outputs of the counter 31 are connected to the decoder 33 and to the tabulation unit 15. The output signal of the decoder 33 is fed to the first input of the element 34, the second input of which receives a signal from the comparator 30. When two input signals at the output of the element I 34 arrive at the same time, the end of line signal appears which causes the counter to be reset. 31 and lia will transmit counter 7 and register 11, and so on 35 frequencies. The frequency divider 35.1, 1 has a division factor equal to the number of lines on the screen (for example, "32"). At the output of the frequency divider 35, a frame sweep signal is generated, which resets the counter 7 in block 6 of the sweep caddy. The processes described in block I are cyclically repeated at a frame scan frequency (30-50 Hz).

The 2 character generator contains a decoder code 36 of the character code, a polling unit 37 of the block 38 () of the memory, a 39 position-south decomposition code of the characters, two shapers 40 and 41 of the symbol sweep signals and a shaper 42 of the signals of the elements of the character contour elements. The decoder 36 converts the input binary code of the characters into a decimal code and transmits it to the address inputs of block 38. Simultaneously, a mastibit signal is extracted; 1a, which is transmitted to photo 40-42 multipliers. The polling unit 37 consists of a shock excitation generator, which forms a burst of pulses with a follow-up frequency of approximately 1 MHz, and an impulse distributor that "triggers a bundle into individual pulses that are shifted in time relative to each other. Unpowered pulses produce a sequential interrogation of block 38, which is completely in the form of ferrite rings with corresponding firmware, and sequential codes are formed at its output, controlling the process of playing the characters. These k (JYA are transmitted to the shaper 40-42. Two shaper 40 and 41 but the circuit is identical and are piecewise-broken voltage generators operating on the principle of charge-discharge capacity. The charge-discharge rate is regulated, than A change in the scale of characters V is achieved. The shaper 42 consists of a worn (D1) connected trigger and an amplifier, which form the signals for highlighting the elements of the symbol. The gain varies depending on the brightness of the different-scale characters. which stores all the tables that can be displayed on the CRT 23 screen. The ROM is interrogated with a code from the counter of 31 columns, the output code contains two numbers: the position code on the X axis of the first familiarity of each column and the number of characters in the column. The source of the information is sent to block 15, a signal of a feature of a table or text. If a sign of a certain table arrives, then the codes X and the number of characters in the column are output sequentially from the output of block 15. The coordinate code is fed to register II, and the code of the number of characters is fed to register 29 and further to comparator 32. codes. The present invention provides for changing intersymbol intervals in proportion to the size and width of characters and reproducing the exponents or lower limits of the indices, which leads to an increase in the accuracy of the device.

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Claims (1)

DEVICE FOR DISPLAYING INFORMATION ON THE ELECTRON BEAM TUBE SCREEN, containing a synchronization unit, the input of which is connected to one of the outputs of the tab unit, the first and second outputs of the synchronization unit are connected to the corresponding inputs of the frame scanning unit, the third output is to the input of the tab unit, the fourth output is to one of the inputs of the symbol generator, the first output of which is connected to one of the inputs of the vertical amplifier, the second and third outputs, respectively, with one of the inputs of the horizontal amplifier of the circuit and the brightness modulation unit, the output of which is connected to the CRT modulator, the outputs of the vertical and horizontal amplifiers are connected to the sign deflecting system, the outputs of the horizontal and vertical scans are connected to the raster deflecting system, the first input of the horizontal scanning unit is connected to the second output of the synchronization block , the second input is to another output of the tab block, characterized in that, in order to increase the accuracy of the device by adjusting the intervals between characters and indices, the following are separately connected to the register, the index feature memory block, the adder, the first, second triggers and the operational amplifier, the output of which is connected to another input of the vertical amplifier, the inputs of the operational amplifier are connected respectively to one of the outputs of the first and second triggers, one of whose inputs is connected to the fourth the output of the symbol generator and the input of the register, and their other inputs are connected to the outputs of the memory block of signs of indices, the output of the register is connected to another input of the symbol generator, another input is the sum ora connected to the fifth output of the synchronization unit, and its output - to the third input line scanning unit. SU., „1084864 I