SU1367009A1 - Information-display device - Google Patents

Description

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The invention relates to an automaton gk and computer technology and is intended to be displayed on the screen of a video monitoring device (VKU).

The purpose of the invention is to expand the field of application of the device by allowing smooth movement of the image areas on the screen.

Fig, 1 shows a functional diagram of the device; Fig. 2 shows timing diagrams illustrating the principle of movement of information on the ICP screen.

The device comprises a pulse generator 1, a first counter 2, a shift register 3, a video signal generator 4, a memory block 5, a first switch 6, a second counter 7, a frame sync driver 8 (KCHJ, a nine horizontal sync pulse generator (SII), a control block 10, the compiler P, the second switch 12, the third 13, and the fourth 14 counters. The positions 15 and 16 denote the information and control inputs of the device, respectively, and the position 17 denotes the output of the device.

The device works as follows.

In memory block 5, information to be displayed is stored. With a black-and-white scribble image, one bit of the memory block 5 corresponds to each raster point. To match the time ... the lights of the raster point J with the speed of the memory block 5, the information in it is stored in words in K bits that are given in parallel; code for the information input of the register 3 shift. This code is written by applying clock pulses that follow with a K-2 period from the first output of the first counter 2 to the controlled input of the shift register 3. The input of the shift of this register from the output of the first counter 2 receives clocking pulses with a period -G. From the output of the shift register 3, a serial code carrying information about the luminance of the raster points is fed to the information input of the video imaging unit 4.

Addressing the memory block 5 in the process of image regeneration is carried out by the first 2 and second 7 counters. From the counters of these counters, the first switch 6 provides address information to the address inputs of block 5

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memory The recalculation coefficient of the first counter 2 corresponds to p / k, where n is the number of raster points displayed in one line, and the recalculation coefficient of the second counter 7 is chosen based on the number of lines.

The sync sweeps (. Not shown) are synchronized by the horizontal and vertical sync pulses, which are formed by the horizontal sync pulses 9 and the vertical sync pulses 8. These sync pulses are fed to the corresponding sync signals of the four video signal generator. From the output of the imaging unit, the information about the brightness of the raster points and the sync signals go to the VCU-.

The recording in the memory unit 5 of the information to be displayed is carried out by an external computer (not shown). At the time of recording, control unit 10 switches the first switch 6 to receive addresses from the computer and generates a recording signal for memory block 5. The reading of data from the block 5 of the external computer memory is carried out similarly, except that instead of the write signal to the block 5 of the memory from the block 10, the control signal is supplied to the read.

There are two modes of data exchange between the computer and the device.

In the first mode, data is exchanged independently of the image regeneration process. In this case, the computer blocks the regeneration and writes or reads data at any time. The disadvantage of this mode should be considered as the screen spill of ICS for the duration of the exchange. This type of exchange can be recommended for a complete update of the image as it requires the least amount of time.

In the second mode, data is exchanged during the return path of the beam in a row or frame. The information about the commencement of the exchange is carried out from the outputs of the line-down 9 and personnel 8 sync pulses connected to the control bus 18. This mode of exchange is convenient in that the operator does not notice the interference on the VCC screen, and it is preferable to use it when editing information when the amount of data being sent is small.

The invention allows for smooth movement on a VCC screen.

images. The screen is conventionally divided into sections of 1; lines (i is the number of sections), each of which: Either is fixed or alternated in one direction with constant speed. The first and last lines of moving sections are not displayed on the screen, therefore

does not belong to the section with the moving information, then the input from the former of the FID 9 via the second switch 12 receives a signal from the second output of the first counter 2,

The horizontal sync pulse delay is implemented by the third 13 and fourth 14 counters. Conversion factor

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The cells of memory block 5 must be behind the fourth counter 14; it is equal to p. This is written information corresponding to the absence of the screen backlight. The direction of movement of the image is opposite to the direction of the forward stroke of the line scan. With a standard television scan, the image is moved from right to left.

The principle of image movement is based on the feed delay of the horizontal sync pulse for the currently displayed frame for a time compared with the feed of this sync pulse in the previous displayed frame. From frame to frame, this delay evenly varies from 0 G to (n-) according to the law, 1-, 2-С, ,,, (p-2) 0, - (p-1) ", 0- With,. ,,,,, ensuring smooth movement of information. In order to display continuously time-varying information during the traverse time through the frame of the computer, the contents of the cells of the memory block 5 are updated. If the current value of the delay Jt rf, then during the turn over the frame, the contents of the cells corresponding to the ith points displayed within the row (r 0.1, ... n-lj) are updated. Thus, for n frames, the image - up to the K plots are fully updated.

To determine whether the currently displayed screen line belongs to areas with a moving image, a comparator 11 is used, to the input of which from the outputs of the second counter 7 is fed a code corresponding to the number of the displayed line. Comparator 11 can be performed, for example, on the basis of a persistent storage device, the information in which is recorded in such a way that if the line belongs to a section with moving information, then a corresponding signal appears at the output of comparator 11, obes (the signal from the third counter 13 through the second switch 12 to the input of the imager .9 FID If the row image

the counter operates in addition mode and at the end of displaying each frame by the frame sync signal increases its state by one. 15 When displaying the last point of the line the signal from the second output of the first counter 2 records the contents of the fourth counter 14 to the third counter 13, which starts to work in the mode of subtraction by signals from the pulse generator 1. The occurrence of a loan signal at the output of the third counter 13 causes the formation of a horizontal sync pulse.

In order to block the search of the addresses of the memory block 5 during the return run of the beam along the row of the prohibition of counting, the first counter 2 is connected to the output of the driver 9 SIR.

The proposed device can operate in the mode of displaying information. For this, the control input of the comparator 11 is connected to the input 16 (belongs to bus 18 3BMJ. The appearance of a corresponding signal at the control input of the comparator 11 blocks the passage of signals from the output of the third counter 13 to the input of the imaging unit 9 of the CID.

Timing diagrams illustrate the principle of information movement on the VKU screen. The raster size is 4 lines with 4 points each. The first line corresponds to the points 1, 2, 3 and 4; the second is 5, 6, 7 and and; the third - 9, 10, 11 and 12; the fourth - 13, 14, 15 and 16; The numbers of the displayed points are indicated on the conventional image of the video signal (VS). The diagram shows five consecutively displayed frames, with the lowercase sync pulses delayed relative to the frame clock pulse (XI) from frame to frame by C.

To move the m lines of the image, the beam retraction time on the frame requires rewriting m words of information. If the memory block size is K, and the number

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Q of the fourth counter 14 is equal to p. This

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the counter operates in addition mode and at the end of displaying each frame, the frame sync signal increases its state by one. 5 When displaying the last line point, the signal from the second output of the first counter 2 records the contents of the fourth counter 14 to the third counter 13, which starts to work in the mode of subtraction by signals from the generator 1 pulses. The occurrence of a loan signal at the output of the third counter 13 causes the formation of a horizontal sync pulse.

In order to block the search of the addresses of the memory block 5 during the return run of the beam along the row of the prohibition of counting, the first counter 2 is connected to the output of the driver 9 SIR.

The proposed device can operate in the mode of displaying information. For this, the control input of the comparator 11 is connected to the input 16 (belongs to the bus 18 3BMJ. The appearance of a corresponding signal at the control input of the comparator 11 blocks the passage of signals from the output of the third counter 13 to the input of the imaging unit 9 of the CID.

Timing diagrams illustrate the principle of information movement on the VKU screen. The raster size is 4 lines with 4 points each. The first line corresponds to the points 1, 2, 3 and 4; the second is 5, 6, 7 and and; the third - 9, 10, 11 and 12; the fourth - 13, 14, 15 and 16; The numbers of the displayed points are indicated on the conventional image of the video signal (VS). The diagram shows five consecutively displayed frames, with the lowercase sync pulses delayed relative to the frame clock pulse (XI) from frame to frame by C.

To move the m lines of the image, the beam retraction time on the frame requires rewriting m words of information. If the memory block size is K, and the number

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the points of the raster displayed in one line is n, then it is ensured in speed in K p / Kraz

The proposed device is expediently used in conversational control-measuring and medical devices, as well as in other areas of automation and computer technology for enhancing informativity due to the smooth movement of image regions.

Formulas and inventions

A device for displaying information, comprising a pulse generator, the output of which is connected to the summing input of the first counter, the first output of which is connected to the control input of the shift register, the output of which is connected to the information input of the video signal conditioner, the information input of the shift register connected to the output of the memory unit whose information input is the information input of the device, and the address input is connected to the output of the first switch, whose information inputs are connected to the second Odom first counter and the output of the second counter, respectively, a first control input of the first switch coupled to an output control unit connected to the control input of the memory unit, and a second control input of the first switch is an address input device.

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The second output of the first counter is connected to the counting input of the second counter, the output of which is connected to input f, the home of the frame sync pulse generator, the output of which is connected to one of the sync inputs of the video signal maker, the other sync input is connected to the output of the horizontal sync pulse, sync pulses, and the output is the output of the device.

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In order to expand the field of application of the device by allowing smooth movement of image areas along the screen, it contains the third and fourth counters, a comparator and a second switch, the output of which is connected to the input of the horizontal sync pulse generator, information inputs — respectively, with the output of the third counter and the second output of the first counter connected to the recording control input of the third counter, the information input of which is connected to the output of the fourth counter, the counting input of which is connected to the output A frame sync generator, the pulse generator output is connected to the subtractive input of the third meter, the second input of the second switch is connected to the comparator output, the first input of which is the control input of the device, and the second input is connected to the output of the second counter, the output of the horizontal sync pulse pulses connected to the reset input of the first counter.

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Claims (1)

Claim A device for displaying information containing a pulse generator, the output of which is connected to the summing input of the first counter, the first output of which is connected to the control input of the shift register, the output of which is connected to the information * input of the video signal shaper, the information input of the shift register is connected to the output of the pa-25 block memory, the information input of which is the information input of the device, and the address input is connected to the output of the first switch, the information inputs of which are connected to the second output the house of the first counter and the output of the second counter, respectively, the first control input of the first switch is connected to the output of the control unit connected to the control input of the memory unit, and the second control input of the first switch is the address input of the device, the second output of the first counter is connected to the counting input of the second counter, the output of which is connected to the input5 of the driver of the frame sync pulses, the output of which is connected to one of the sync inputs of the video driver, the other sync input of which is connected The output is the output of the lowercase, sync pulses, and the output is the output of the device, characterized in that, in order to expand the field of application of the device by the possibility of smoothly 15th movement of image areas on the screen, it contains the third and fourth counters, a comparator and a second switch, the output of which is connected to the input of the shaper of the lowercase 20 clock pulses, the information inputs are, respectively, with the output of the third counter and the second output of the first counter connected to the recording control input of the third a counter, the information input of which is connected to the output of the fourth counter, the counting input of which is connected to the output of the frame clock driver, the output of the pulse generator with ~ 30 is single with the subtracting input of the third counter, the control input of the second switch is connected to the output of the comparator, the first input of which is the control input of the device , 35 and the second input is connected to the output of the second counter, the output of the horizontal sync pulse former is connected to the reset input of the first counter. FIG. 2