SU1547023A1 - Device for display of information on colour indicator - Google Patents

Abstract

The invention relates to automation and computer technology and can be used in television indicators of graphic information in ASIS, CAD, automated control systems, in biomedical research. The purpose of the invention is to expand the field of application of the device due to the simultaneous display of the main and additional images by overlaying them - by introducing the second data storage unit 7 and the imaging unit 10 pulses and the corresponding functional connections. The invention allows to overlay additional information on the main image. There is no need to erase the main image, and when moving the overlaid information to restore it, which eliminates large losses of computer time and expands the scope of the device in television indicators of graphical information in the ARRD, CAD and ACS. 2 Il.

Description

The invention relates to automation and computer technology and can be used in television indicators of graphic information in ASIS, CAD, automated control systems, in biomedical research.

The purpose of the invention is to expand the field of application of the device due to the possibility of simultaneous display of the main and additional images by overlaying them.

Figure 1 shows the block diagram of the device; Fig. 2 illustrates a logic circuit of a pulse former.

The device contains an interconnection block 1, a register block 2 consisting of an address register 3 and a data register 4, an address switch 5, a first 6 and a second 7 data memory blocks forming a video memory block 8, a color table memory block 9 , shaper 10 pulses, digital-to-analog converter 11 (D / A converter), color indicator 12, read switch 13, control unit 14.

The device works as follows.

In order to connect the display device with external devices, there is an interface 1 unit. When accessing the display device, the information from the output of the conjugation unit 1 goes to the corresponding registers 3 and 4 in block 2. Information from the outputs of the data register 4 and the address register 3 of the unit 2 is fed to the corresponding inputs of the video memory unit 8 or the color table storage unit 9 . In block 8, information about the image on the screen of the television indicator 12 is recorded, and in block 9 of the memory of the color table the information necessary for processing the background information displayed from block 8, i.e. thus, block 9 performs the function of an image processor.

The display mode is as follows. Video memory unit 8 serves as a buffer storage device for providing image regeneration in display mode. In this mode, the cell addressing of the block 8 is carried out using the synchronous generator of the control block 14 (not shown). The address inputs of blocks b and 7 are connected to the output of the switch 5 address, which, depending on the operating mode

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The display device switches the address of the video memory or from the register 3 of the address of the block 2 in the access mode from external devices or from the clock generator counter from the control unit 14 in the display mode. Block 8 is made up of a matrix of cells equal to the matrix of image points on the television indicator screen 12. The cells of block 8 are conventionally divided into two zones: blocks 6 and 7. Block 6 stores 8-bit video signal codes that display 256 colors of each point of the background image , and in block 7 - 2-bit codes, which provide control, if necessary, of displaying, at the current point, an image of background information. The overlay information is displayed in one of the 3 primary colors of the SECAM color television system. This information is superior to the background display priority. The definition of the color of the current image point depending on the two-digit code of block 7 is as follows:

00- information about the current point is determined by the contents of block 6;

01 - the current point turns red;

10 - the current point is colored green;

11 - The current point is colored blue.

I The information read from block 6 is fed to the input of block 9, the output of which contains the code of the converted image information, which is a digital video signal. From the output of block 9, the elements of the background image are fed to the information input of the imaging unit 10 of the image pulses, the control inputs of which are supplied with the control information from block 7. The imaging unit 10 is implemented on switching circuits having four information and two control inputs. The number of switching circuits is equal to the number of bits of a digital video signal for each of the primary colors (figure 2). The information inputs of the switching circuits of all three primary colors, connected to the output of the latter by the code of two zeros of control signals, connect the outputs of the corresponding code bits of the video signal coming from block 9. The other three information inputs of each of the switching colors are connected. In this way, with the appropriate control code, the desired color is displayed. This thereby organizes the highest relative to the background color priority of the color of the current point of the superimposed information point, i.e. the background color is pressed through, eliminated, and the current point is painted in the color determined by the information from the storage of the second zone of the video memory cell, i.e. block 7.

This is done as follows. All second information inputs of switching circuits connected to the output of bits controlled by code 01 of the red video signal are connected to a high level, while the same inputs of green and blue colors are connected to a low level, thus the current point of the image is colored red. All third information inputs of the switching circuits connected to the output by the control code 10 of the green color of the video signal are connected to a high level, while the same inputs of red and blue are connected to a low level, thereby the current image point is colored green. All fourth information inputs of the switching circuits connected to the output by the control code 11 of the blue color of the video signal are connected to a high level, while the same inputs of red and green color are connected to a low level, thus the current point of the image is colored blue.

Control of switching circuits of colors of video bits is carried out by controlling 2-bit information from block 7.

Thus, in the imaging unit 10, the color code of the current image point is generated depending on the contents of block 7.

The corresponding outputs of the imaging unit 10 are connected to the inputs of the digital-analog converter 11, the outputs of which are connected to the input of the color indicator 12. If necessary, read the contents of the video memory cells or the contents

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They are addressed to the accumulator of the chromaticity table in an appropriate manner through the address register 3 of the block 2 of addressable registers. The output information of the respective blocks via the readout switch 13 and the interface block 1 is provided to external devices.

Thus, the proposed device allows to overlay additional information on the main one, which is displayed on the color indicator screen, thereby expanding the J5 application area of the television indicators of graphic information in ASPN, CAD, automated control systems, etc.

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Claims (1)

0 claims A device for displaying information on a color indicator comprising a interface unit whose inputs / outputs are device inputs and outputs, a register block, an address switch, a first data memory block, a color table memory block, a digital-analog converter, a read switch, a control block , the control input-output of which is connected to the control input-output of the interface block, the outputs of the group of which are connected to the information inputs of the register block, the control inputs of which are connected to the output of the block The outputs of the group of which are connected to the information inputs of the first switch group d of the address, the information inputs of the second group of which are connected to the outputs of the first group of the register block, which are connected to the address inputs of the memory block of the color table, the information inputs of the first and second groups of which are connected to the outputs of groups of the register block and the first data storage block, respectively. the address inputs of the first data storage unit are connected to the outputs of the address switch group, and the information inputs are connected to the outputs of the second group of the register block, the information inputs of the first and second read switch groups are connected respectively to the outputs of the first data storage unit and the outputs of the color table memory block, and the read switch outputs are connected to information five 0 the inputs of the interface unit, the information inputs of the color indicator are connected to the outputs of the digital-to-analog converter} the control inputs of the address switch, the first data memory block, the read switch, the color table memory block and the color indicator are connected to the output of the control block, characterized in that , in order to expand the scope of application by providing the possibility of simultaneous display of the main and auxiliary (gel images by superimposing them, it contains an im-Ouls generator and a second ca. data memory, five the address and information inputs of which are connected respectively to the outputs of the address switch and the outputs of the second group of the register block, the control input of the second memory block is connected to the output of the control block, and the outputs are connected to the information inputs of the third read switch group and to the control inputs of the pulse driver, information the inputs of which are connected to the outputs of the memory block of the chromaticity table, and the outputs of the pulse former are connected to the inputs of the digital-to-analog converter. / h Red green Compiled by S. Kazakov Editor E. Kopcha Tekhred M. Khodanich Proofreader T. Paliy Order 83 Tchrazh 389 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Blue Subscription