SU1656588A2 - Data color display unit - Google Patents

Abstract

The invention relates to automation and computing, can be used to display information from a computer and is an improvement to the device by author. No. 1547023. The purpose of the invention is to expand the field of application of the device due to the possibility of displaying service information on the field free from the image. This is achieved by the introduction of a video switch, a driver for the control signals and the corresponding functional connections. The invention makes it possible to free the lower part of the screen starting from a predetermined line for displaying primary information. 3 il.

Description

The invention relates to automation and computing and can be used to display information from a computer.

The purpose of the invention is to expand the field of application of the device due to the possibility of displaying service information on the field free from the image.

Figure 1 shows the block diagram of the device; 2 is a block diagram of a video switch; FIG. 3 is a structural diagram of a video switch control unit.

The device contains interface block 1, block 2 of registers consisting of address registers 3 and data register 4, address switch 5, first 6 and second 7 data memory blocks, which form video memory block 8, color table memory block 9, switch 10 video signals, driver 11, control signals, driver 12 pulses, digital-to-analog converter 13, color television indicator

14, read switch 15 and control unit 16.

The device works as follows.

For the connection of a display device with devices external to it, an interfacing unit 1 is used. When accessing the display device, the information from the output of the conjugation block 1 goes to the corresponding registers 3 and 4 in the block 2 registers. The information from the outputs of the data register 4 and the register 3 of the address of the block 2 is fed to the corresponding inputs of the video memory block 8 or the color table storage block 9. In block 8, information about the image on the screen of the television color indicator 14 is recorded, and in block 9 of the memory of the color table, information is entered that is necessary for processing the background image displayed from block 8, i.e. the color table memory unit 9 performs the function of an image processor.

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The display mode is as follows.

Video memory unit 8 serves as a memory device for image regeneration in display mode. In this mode, the addressing of the cells of the opog 8 of the memory is made using the synchronous generator of the control unit 16 (not shown). The address inputs of blocks b and 7 of memory are connected to the output of switch 5 of the address, where the address of the video memory or from the register 3 of the address of block 2 in the mode from external devices, or from the clock counter from the control block 16 is switched depending on the display device operation mode in display mode. Video memory unit 8 is made up of a matrix of cells identical to the matrix of image points on the screen of the television indicator 14. The cells of the block Ј y. They are divided at the bottom of the United Nations: blocks 5 and 7 of the data memory. Block 6 stores video signal codes that display 256 flowers of each image point, and block 7 contains 2-bit codes that provide, if necessary, display of background information on the current point, as well as display of service information . The service information is output in the same way as the superimposed information in one of the 3 primary colors of the color television system of SECAM, therefore, 2 bits are enough to encode the point of the screen. This information has the highest display priority with respect to the background or color of the polp. The information read from the memory block 6 is fed to the input of the memory block 9 of the color table, the output of which contains the code of the converted display information, which is a digital / video signal. From the output of block 9, the signals of the background image elements are fed to the first information output of the switch 10, which forms a field, a free or image. This field represents the lower part of the screen across its entire width starting with the line specified by the code and the field sign read into the ceda register of the sign of the driver 11. The control input of the switch 10 receives a signal from the first I control signals. The second information input of the switch 10 is connected in such a way that when the unit at the control input to the output signal 1 is connected, which corresponds to the white color of the pop on the indicator screen 14. Thus, the highest

relative to the background color, color priority is gender, i.e. the background color is pressed through, eliminated, and the current point is painted white. Switch output 10

connected to the inputs of the imaging unit 12 pulses, with the help of which on the display of the indicator 14 both service information on the field, free from the image, and additional image are displayed,

0 superimposed on the background image. The output of the driver 12 pulses connected to the inputs of the digital-to-analog converter 13, the outputs of which are connected to the input of the indicator 14. In the case

5 of the need to read the contents of the video memory cells or the contents of the memory block 9 of the color table, they are addressed accordingly through the address register 3 of the block 2 addressable

0 registers; the output information of the respective blocks via the read switch 15 and the interface block 1 is provided to external devices.

The code of the field through the block 1 interface 5 enters the information inputs of the code of the characteristic field (the field can have several sizes, each of which has its own code of the characteristic), the output of which goes to the code decoder

0 sign gender The outputs of the decoder, together with the signals of the initial line of the field, coming from the clock generator of the control unit 16, are supplied to the switch control signal generation circuit.

5 This signal is applied to the S input of a trigger that holds it to the end of each frame. A single trigger output enters the control input of the switch field. The trigger returns to the initial zero position by the end signal of each image frame. In the simplest case, the control signal shaping circuit of the switch may be element I.

5 Thus, the proposed device allows creating an image-free field on the indicator screen and outputting service information thereon, which simplifies its perception.

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Claims (1)

Invention Formula A device for displaying information on a color indicator on the author. St. 5 No. 1547023. characterized in that, in order to expand the field of application of the device due to the possibility of displaying service information on a field free from an image, it contains a video switch, the driver control signals, the information input of which is connected to the output of the interface unit, the first information input of the video signal switch is connected to the output of the memory block of the color table, the second information input of the video signal switch is the input of signal 1 device, the output of the video signal switch is connected to the information input of the pulse generator, the control input of the video signal switch is connected to the output of the control signal generator, the control input of which is connected to the output of the control unit. tfHgodfi ogomoejud lin / fl On the fortifier Formation scheme of the control signal / k Sign Code of gender Pr code code From the signal of the end of each frame From C G floor start line signals 8 each frame