SU1282191A1 - Device for displaying information on screen of colour cathode-ray tube - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in information-controlled computer complexes. The purpose of the invention is to improve the accuracy of the device. If it is necessary to make changes in the information displayed on the CELT screen, a marker is used, generated by block 13, whose position on the screen can be changed by signals from the keyboard 2. When the

Description

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The Scientific Research Institute of Graphic Information, which allows to obtain a continuous image, the marker takes full familiarity, which allows to increase the accuracy of determining the position of the corrected mark. Block 11 forms additional characteristics of the symbols: Blinking, Underline, Positive, Negative, and Block 14 is designed to change the color of the marker depending on the color of the main image. The combined action of blocks 14 and 11 provides the best visibility of the marker on any color background and the preservation of the corrected part of the image in hard

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ive increases the efficiency of correction and image processing. Blocks 13 and 11 provide the best visibility of the marker on any color background and in the case of a sign being displayed with dark dots on a color background (negative), i.e. if the sign is displayed in positive, then when the marker is moved to the place of the corrected (or any current) sign, against the background of the marker, which automatically changes the color to a different color from the displayed sign and occupies full familiarity, a corrected sign is displayed in the negative, 2 hp. f-ly, 3 silt, 1 tab.

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The invention relates to automation and computing and can be used in information and control computing systems.

The purpose of the invention is to improve the accuracy of the device.

Fig, 1 shows the block diagram of the proposed device; 2 is a block diagram of a marker color control unit; FIG. 3 is a block diagram of a block for generating additional character characteristics.

The device contains a block 1 of the interface, a block 2 of data input, made in the form of a keyboard, a first buffer register 3, a block 4 of memory, a block 5 of synchronization, a second 6 and a third 7 buffer registers, a generator of 8 characters, a graph generator 9, Tel 10 color codes, block 11 of the formation of the additional Characteristics of the characters, the imager 12 video signals, block 13 of the formation of the marker, block 14 of the color management of the marker, block 15 sweep, color cathode-ray tube (CELT) 16,

The marker color control block 14 contains the element IZH 17, the element AND 18 inverters 19 "20, the element AND 21,

The color code converter 10 is made on triggers 22-24 controlling each of the primary colors of the image — red, green, and blue.

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The block 11 of forming additional characteristics of symbols comprises inverter 25, trigger 26, inverter 27, trigger 28, inverters 29-31, multiplexer 32, element AND 33, inverters 34 and 35, element OR 36, inverter 37, element 38.

The synchronization unit 5 is designed to generate control pulse sequences that provide and synchronize operation of all the units of the device, except interface 1 and keyboard 2, and represent a combination of a master quartz oscillator and several counters-frequency dividers, providing a series of pulse sequences with different the duration and frequency of the following,

Generator 8 characters is designed to convert the codes of letters and numbers into a set of signals that provide the formation of text on the screen of CELT 16 by means of a block of forming 12 video signals for CELT without taking into account the color and commands

The graphic generator 9 is designed to convert the codes of graphic characters into a set of signals providing the image formation on the screen of the CELT 16,

Transducer 10 is designed to convert color codes into signals that provide isob3. one

razheni set of tsnet on the screen of CELT 16.

Block 11 is intended for the formation of commands Blinking, Underlining the sign, Positive, Negative.

Video signal generator 12 for the CELT is designed to convert signals from an 8-character generator, a graphics generator 9, a converter 10, and a block 11 into a set of three video signals for each of the primary colors supplied to the CELT 16.

The marker generation unit 13 is designed to generate signals supplied to the marker color control unit 14 and block 11 and ensure the formation of a marker on the screen of the CELT 16 located in the specified screen month.

The marker color control unit 14 is designed to change the color of the marker depending on the color of the main image in order to improve the visibility of the marker.

The unit 15 is designed to provide a television scan of the image on the screen of the CELT 16 and is a standard unit that is part of a color VCU or a typical television receiver.

The device works as follows.

The codes of characters, colors, and commands are transmitted to the computer via the conjugation block 1 or from the keyboard 2 to the buffer register 3 (information recording) in the memory block 4. The synchronization signals from the synchronization unit 5 are fed to the buffer register 3 and to the memory unit 4, while writing the character codes, colors and commands to the memory unit 4. In accordance with the time diagram of the memory block 4 and the time diagram of the device as a whole according to the signals from the synchronization unit 5 to the block 4 and the registers

6 and 7, information codes are read out from memory block 4 and written into buffer registers 6 and 7.

According to the operator's signal from the keyboard 2, information from the buffer register 6 (information output) can be transmitted through the unit 1 to the computer; Information from the buffer register

7 provides an 8 character generator (alphanumeric) and a graph generator 9 (graphic).

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Depending on the first eight bits of the info word stored in buffer register 7, the character codes are sent to the generator 8 or the graphic generator 9. The generators 8 or 9 of the register 7 generate a sequence of pulses synchronized with the scanning of the CRT, ensuring the formation of the sign.

The color codes come from the buffer registers to the converter 10, and the command codes to block 11. From the generators 8 and 9 of the converter 10 and block 11, information is fed to the video signal generator 12. Since the operation of blocks 8-12 is synchronized with signals from block 5, video impulses are generated at the output of shaper 12, which, in accordance with the raster scan of the image on the CRT screen, allow displaying multicolor information specified by the codes stored in memory block 4. The scanning of the electron beam is carried out by block 15, and the supply of control signals to the CRT 16 from blocks 2 and 15 is synchronized by block 5.

If it is necessary to make changes to the information displayed on the screen of the CELT 16, the marker generated by block 13 is used, and the position of the marker on the screen can be changed by signals from the keyboard 2. Since the proposed device allows displaying the information as. graphic marks, which allow to obtain a continuous image, the marker takes full familiarity, which improves the accuracy of determining the position. adjustable sign.

Since the proposed information display device allows displaying information in several colors (up to seven), to improve image correction and text editing, the marker color control block 14 is used, the signals from block 13 are sent to blocks 11 and 14, and from block 11 the signals are received to the driver 12, and from block 14 to the converter 10, which is also connected to the driver 12.

The three bits of the information word (9th, 10th, and 11th) recorded in block 4 of memory and then written to the buffer register 7 determine the color

This section of the image (familiarity) and transmitted to the converter 10 and block 14. In the absence of a signal from block 13 to block 14, the color of the current familiarity is determined by a combination of codes corresponding to the three primary colors (red, green and blue) coming from the register 7 to the converter 10.

Triggers 22-24 are set to the positions corresponding to the signals received from register 7, and then provide the necessary signals to ensure operation of the driver 12. When block 14 receives a signal from block 13, the presence of which indicates that this familiarity is highlighted the marker, trigger states 22-24 vary depending on the color codes recorded in register 7. Block 14 can be constructed according to any predefined functional dependence of the marker color on the image color, directionally nd for the best distinguishability of the marker. In the proposed device, taking into account the fact that the green color is perceived most favorably by the human eye, the following table of marker colors is realized.

If the image on this familiarity has a color defined by any combination of codes, including codes of red or blue, or both

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together, the element 17 triggers the signal from its output to the element 18, which simultaneously with the signal from block 13 provides a signal to the R input of the trigger 23, which sets it to state 1, and to the S inputs of the trigger 22 and 24, signals are sent to reset them to the O state, and the green color of the marker is provided. Through a circuit consisting of series-connected blocks 19 and 21 and 20 and 21, respectively, the signal does not pass. If the image is green, that is, the binary code corresponding to green is 1, and the codes of red and blue are O, the signal OR does not pass through the element 17, the inverters 19 and 20 invert the codes of green and blue, due to which causes element 21 and the signal from its output sets the trigger (4 ii

, and triggers 22 and 24v. the state of ger 23 is in the state O, which provides the magenta color of the marker.

Thus, a table of marker colors is realized, which ensures high visibility of the marker against the background of a color image and favorable perception of the marker by the operator's eye, which increases the accuracy of work and creates ease of operation due to low operator fatigue.

The two bits of the information word (12th and 13th) are a command code that defines the execution of commands that allow the formation of additional characteristics of the symbols Blinking, Underline, Positive, Negative.

The 12th and 13th bits of the information word come from register 7 to

5 inverters 25 and 27, as well as on the 12th bit and inverted by the inverter 27, the 13th bit goes to the AND 33 element, which also receives: a pulse train with a frequency of 2 Hz from block 5 (Fig. 2). From the output of the And 33 element, pulses with a frequency of 2 Hz arrive at shaper 12, as a result of which a displaying sign or symbol of an ox (image section) is blinking in case block 11 receives a blinking command code. The inverted bits of the command code from the outputs of the inverters 25 and 27 are fed to the D-BXO 12

d the triggers 26 and 28, which are set to the appropriate positions by the signal from block 5 passing through the inverters 29 and 30, coming to the C inputs of the flip-flops 26 and 28. From the outputs of these triggers, the signals synchronized with the time diagram of the entire device through the inverters 31 and 34 arrive at the control inputs VI and -72 of the multi-, plexer 32. In accordance with the command code value, the multiplexer allows the signal to pass to its output and then through the OR 36 element to the driver 12, which displays the sign (or symbol) in n positive or negative. The signals from block 5, fed to inverter 37 and AND 38, allow the 32 signals to pass through the multiplexer, which are necessary for underscoring the character with the appropriate command code.

When the signal from block 13 arrives at the R-inputs of the triggers 26 and 28, the marker is displayed on the CRT screen, the triggers 26 and 28 are reset to the state O, and from their outputs through the inverters 31 and 34 sends the command code to the multiplexer 32 Negative. As a result, if a sign or symbol (part of the image) was previously displayed on this familiarity, it will be visible against the background of the marker in the negative image.

Thus, the combined action of blocks 14 and 11 ensures the best legibility of the marker on any color background and the preservation of the corrected part of the image in the negative, i.e. Increases the efficiency of image correction and image processing. By connecting blocks 13 and 11, the presence of the Positive (Negative) command is taken into account and the best distinguishability of the marker on any color background is also ensured if the sign of the specified color is displayed on a dark background (positive) and if the sign is displayed with dark dots on a color background ( negative). As a result, the accuracy of the marker indication of the corrected image area significantly increases. If the mark is displayed in positive, then when the marker is moved to the place of the corrected (or any current) mark on the background of the marker, which automatically changes color by 9918

personal on the color of the displayed sign and occupying the entire familiarity, the corrected sign is displayed in the negative.

Thus, a high accuracy of control over a multi-color image is provided when correcting its sections and editing text, the operator’s convenience with the indicator is improved, since color graphics are displayed in seven colors against a given background color using simple technology based on the graph generator 9 .

Claims (1)

1. A device for displaying information on the screen of a color cathode ray tube containing a interface unit, the first inputs and outputs of which are, respectively, the output and input of the device, an input unit executed in the form of a keyboard, the outputs of which are connected to the first inputs of the first and second the buffer registers and the marker generation unit, the second input of the first buffer register and the output of the second buffer register are connected respectively to the second output and input of the interface unit, the output of the first buffer register under Connected to the input of the memory unit, the outputs of which are connected to the second input of the second buffer register and the first input of the third buffer register, the first and second outputs of which are connected to the inputs of the character generator and the graph generator, the outputs of which are connected to the first and second inputs of the video signal generator, the outputs of which connected to the corresponding CELT modulators, the deflection system of which is connected to the scanner, the third output of the third buffer register is connected to the first input of the color code converter, turn is connected to a third input of the video signal, the fourth output of the third buffer register coupled to a second input of the token generating unit, characterized in that, in order to increase the accuracy of the device, it comprises a form: - Rovani additional symbol characteristics, whose input is connected to v / n L. 7 Ofn ffl, n from 29 5п, 5 о т 6 / 1.13 - and at 5A, from J5 omSfi. five J7 thirty - 33 on GTL.P 2Hz FROM 5 36 on bl.12 fPuz.3