SU1598211A1 - Device for measuring spot centre coordinates - Google Patents

Abstract

The invention relates to a television measuring technique. The purpose of the invention is to expand the functionality. The device for measuring the coordinates of the center of the spot contains a threshold unit 1, r-r 2 pulses, D-flip-flop 3, T-flip-flops 4 and 5, counters 6-8 and 14, elements 9, 10 and 24, multiplexers 11,12 and 22, el-OR 13 and 19, RS-flip-flops 15,17, shapers 16 and 23 pulses, el-18,2 and 25 delays, el-A block 20 and memory block 26. The goal is achieved by allowing the measurement of the coordinates of the center of a figure with arbitrarily located axes of symmetry. 1 il.

Description

31598211

The invention relates to a telebidement measuring technique and can be used in television automatic systems for measuring the coordinates of the center of the image of objects on a television raster.

The aim of the invention is to extend the functionality by providing the possibility of measuring the coordinates of the center of the figure with arbitrarily located symmetry axes.

The drawing shows the structural electrical circuit of the device 15 for measuring the coordinates of the center of the spot.

The device for measuring the coordinates of the center of the spot contains a threshold unit 1, a generator of 2 pulses, D is a trigger 3, the first k and the second 5 20 triggers, the second 6. the first 7 and third 8 counters, the first 9 and the second 10 And elements, the first 11 and the second 12 multiplexers, the first element OR 13 the fourth counter 1A, the first RS-trigger 25 25, the first driver 16 pulses, the second RS-trigger 17, the first delay element 18, the second element OR 19, the block 20 elements And, the second delay element 21, third multiplexer 22, second pulse generator 23, third element, And 2k, third el pent 25 and delay unit 26 memory.

The device works as follows.

After switching on the device under the action of the first personnel extinguishing pulse arriving at its second Q input, the counters 7, 8 and 1 and the triggers

 15 to 17 is set to the zero state. As a result, on the second

 the output of the counter 7 and the zero output of the trigger 15 are formed signals one

At a low level, under the action of which the multiplexers P and 12, respectively, switch to receive signals from their first inputs. At the zero output of the trigger 17, a single level signal is generated, which permits the AND 10 element (allows the passage of lower-case quenching pulses), And 2 allows the element (allows

From the moment of the beginning of the first frame, lowering damping pulses from the third input of the device come through; a shaper 23 forming a short pulse at the leading edge of the signal, through delay element 25 and allowed element 10 at the counting input of counter 1 and through multiplexer 12 at the counting input of counter 8. With each horizontal damping pulse, the contents of counter 1 increase by one.

At the same time, in the counter 14, the code of the address of the record is formed, according to which the cell is selected in the memory block 2b for recording the X coordinate from the counter 6 into it.

Counter 8, from the moment of the beginning of the first frame, counts the number of all rows in the row until the appearance of the first video pulse. The first video signal received from the first input of the device is fed to the input of the threshold element 1, which performs its binary decomposition. At the output of the threshold element 1, a signal is generated that arrives at the D input of the D flip-flop 3, enabling synchronization of the binary video signal with clock pulses arriving at the C input of the D flip-flop 3 from the pulse generator 2.

The signal from the output of the D-flip-flop 3 arrives at the single input of the flip-flop 15, setting it to a single connection. The zero signal from the zero output of the trigger 15 multiplexer 12 switches to receive signals from its second input. , At the same time, the C-input of the counter 8 through the multiplexer 12 receives a pulse signal from the output of the T-flip-flop 5, dividing into two number of video pulses formed at the output of the D-flip-flop 3. The counting of the video pulses in the counter 8 stops when the last one arrives video pulse to the first input of the device.

Thus, within one frame, at the output of the counter 8, a code is generated for the result of counting all the rows of the row until the first

Raorschas 43J iwi- - i g, - - h, - -.- ,,.,

the passage of personnel extinguishing pulses of the video impulse in the line and in one hour, - r, r, .ir, -nn 77 search for the presence of pulses per line

ow) switches multiplexer 22 to receive signals from its first inputs (write address code) and switches memory block 26. to write mode.

when video pulses are numbered in a row This code, corresponding to the vertical coordinate of the center of the image of a spot on a television raster, stores the moment of the beginning of the first frame lower case damping pulses from the third input of the device through; a shaper 23 forming a short pulse at the leading edge of the signal, through delay element 25 and allowed element 10 at the counting input of counter 1 and through multiplexer 12 at the counting input of counter 8. With each horizontal damping pulse, the contents of counter 1 increase by one.

At the same time, in the counter 14, the code of the address of the record is formed, according to which the cell is selected in the memory block 2b for recording the X coordinate from the counter 6 into it.

The counter 8 from the moment of the beginning of the first frame counts the number of all rows in the row until the appearance of the first video pulse. The first video signal received from the first input of the device is fed to the input of the threshold element 1, which performs its binary decomposition. At the output of the threshold element 1, a signal is generated that arrives at the D input of the D flip-flop 3, enabling synchronization of the binary video signal with clock pulses arriving at the C input of the D flip-flop 3 from the pulse generator 2.

The signal from the output of the D-flip-flop 3 arrives at the single input of the flip-flop 15, setting it to a single connection. The zero signal from the zero output of the trigger 15 multiplexer 12 switches to receive signals from its second input. At the same time, the C-input of the counter 8 through the multiplexer 12 receives a pulse signal from the output of the T-flip-flop 5, dividing into two quantities of video pulses formed at the output of the D-flip-flop 3. The counting of the video pulses in the counter 8 stops when the last video pulse arrives by first input device.

Thus, within one frame, at the output of the counter 8, the result code of all rows of the next row is formed until the first

- ,,.,

video impulses in a line and one after the availability of video pulses per line

when there are video pulses in rows, This code, corresponding to the vertical coordinate of the center of the image of a spot on a television raster, is stored

Nits in the counter 8 before the arrival of the next personnel extinguishing pulse.

The first line damping pulse of the current frame through the driver 23, the delay element 25 and the element 10 also goes to the zero input of the counter 6 and through the element OR 13 to the zero input of the counter 7. sets them to the zero state. In this case, the zero level signal from the first output of the counter 7 prohibits the element And 9, and the signal of the unit level from its second output multiplexer 11 switches to receive signals from its first input. In this case, the C-input of the counter 6 through the multiplexer 11 receives a pulse clock frequency signal from the output of the generator 2 pulses. As a result, counter 6 counts clock pulses in a row.

When the first video pulse arrives at the output of the D-flip-flop 3, a single level signal is generated, under the action of which the second output of the counter 7 sets the logical zero level, by which the multiplexer 11 switches to receive signals from its second input. At the same time, a single level signal from the first output of the counter 7 resolves the AND 9 element. As a result, the C input of the counter 6, through the element 9 and multiplexer 11, receives a pulse signal from the output of the T flip-flop D, dividing by two the number of pulses arriving at it input from the generator. pulses.

With the end of the first video impulse at the D-input of the D-flip-flop 3 by the next clock pulse, it is set to the zero state, prohibiting the And 9 element, as a result of which the pulses from the output of the T-flip-flop t and the C-input of the counter b do not pass Thus, at the end of each line at the output of counter 6, a code is generated for counting clock pulses additionally if there is no video pulse in the row or counting clock pulses until the appearance of a video pulse after one within the video pulse in the row. The code from the outputs of counter 6 is fed to the data inputs of the block Zb

memory

In counter 1, the code of the number of the read line (address of the record) will be fixed, which through the multiplexer

6

j a

R

ten

The iL is fed to the address inputs of the memory block 26.

The next extinguishing damping pulse through the forming unit 23, the element AND 2 and the element OR 19 gates the memory block 2b. As a result, the counter code 6 is recorded in the memory location of the memory block 2b, whose address is determined by the output code of the counter 1.

The same horizontal damping pulse through the delay element 25 and the AND 10 element is fed to the zero input of the counter 6 and through the OR element 13 to the 15 zero input of the counter 7. As a result, the counters 6 and 7 are set to the zero state.

Further, from the beginning of the next line, in the counter 6, the counting of 20 pulses of the generator 2 is carried out in the same way as described.

After reading the last line in the frame, the next frame damping pulse arrives. At this point, the code for the vertical coordinate of the spot center (the number of the line passing through the spot center) is recorded in 25 counter 8, and in the memory block 26 codes are stored corresponding to the number of elements 30 in each row of the frame.

The next frame damping pulse from the second input of the device enters the zero input of the trigger 15, through the OR element 13 to the zero input of the counter 7 and through the driver 1b to the single input of the trigger 17 and to the input of the delay element 18. As a result, the trigger 15 and the counter 7 are set to the zero state, and the trigger .Q 17 is set to one.

At the zero output of the trigger 17 A signal of the zero level is formed, which prohibits the elements 10 and 2-4. . multiplexer 22 connects to the output of counter 8 and switches memory block 2b to read mode.

The counter code 8 in memory block 26 selects a cell in which the horizontal coordinate of the center is stored

spot.

The same frame damping pulse through delay element 18 is fed to an external device (Ready signal), to input of delay element 21, to gate input of AND block 20, and through OR 19 element to sample input of memory 2b.

When gating a memory block 2b and a block of 20 elements And to the outputs,

50

55

the devices are given the vertical coordinate of the center of the spot (Y coordinate) from the block of 20 elements And, and the horizontal coordinate of the center of the spot (coordinate of X) from the outputs of the memory block 26.

The frame extinguishing pulse delayed by the delay element 21 is applied to the zero inputs of the trigger 17 and the counters-b and 1A, setting them to the zero state,

As a result, the level of the logical unit is formed at the zero output of the trigger 17, KOfopHM is divided into 1 and 1 & and 24, the multiplexer 22 is connected to the output of the counter k, and the memory block 26 switches to the recording mode.

Further, during the subsequent frame, the operation is carried out as described.

The proposed device, in comparison with the known one, makes it possible to measure not only a solid figure symmetrically relative to the vertical and horizontal axes on a television raster for one frame, but also a solid figure with arbitrary symmetry axes.

Formula

acquisitions

A device for measuring the coordinates of the center of the spot, containing a series-connected Threshold block, whose input is the signal input of the device for measuring the coordinates of the center of the spot, D-flip-flop, to the C input of which the output of the pulse generator is connected, the first counter, the first multiplexer and the second counter connected in series the first T-flip-flop, to the input of which the output of the pulse generator and the first element I are connected, to the second and third inputs of which the second output and the C input of the first counter are connected, respectively and the output is connected to the second input of the first multiplexer, to the third input of which is connected the output of the pulse generator connected in series to the second T-flip-flop, to the input of which C-input of the first counter, the second multiplexer and the third counter are connected, and the output of the second counter is connected to the R-input of the second counter the second element is And,

5982P

about tl

eight

ten

15

20

25

thirty

t in, d in, 35

40

45

50

55

In order to expand functionality by providing measurement of the coordinates of the center of a figure with arbitrary symmetry axes, the first OR element, the output of which is connected to the R input of the first counter, is inserted, connected in series to the first driver, the input of which is frame damping pulse and is connected to the first input of the first OR element and the R input of the entered first RS trigger, the first and second delay elements connected in series to the second pulse driver s, the input of which is input lowercase blanking pulses, and the third delay element whose output is connected to the first input of the second AND gate, to the second input of which is connected to the output of the second RS-inputted trigger to. The R- and S-inputs of which are connected respectively to the outputs of the second delay element and the first pulse shaper, and also introduced a fourth counter to the C- and R-inputs of which are connected respectively the outputs of the second element And the second delay element connected in series to the third element And, to the first and the second inputs of which are connected respectively to the outputs of the second RS-flip-flop and the second pulse shaper, and the second element OR, to the second input of which is connected the output of the first delay element, the third multiplexer, bl OK and the memory block, the output of which is the first output of the device for measuring the coordinates of the center of the spot, the other output of which is the output of the block of AND elements whose first input is connected to the output of the first delay element, and the second inputs are connected to the outputs of the third counter and the first inputs of the third multiplexer, to the second and third inputs of which are connected, respectively, the outputs of the fourth counter and the second RS flip-flop, which is connected to the write input of the memory block, to the data inputs, addresses and sampling oh are connected respectively to the outputs of the second counter, the third multiplexer and the second element OR, as well as the output of the second element AND connected to the second inputs of the first element 9. 159821110

of the second OR and the second multiplexer, which is connected to the output of the D-flip- to the control input of which a subconnector, is output of the first K8 flip-flop, 8-input

Claims (1)

Claim A device for measuring the coordinates of the center of the spot, containing a threshold block connected in series, the input of which is the signal input of the device for measuring the coordinates of the center of the spot, a D-trigger, to the C-input of which the output of the pulse generator is connected, the first counter, the first multiplexer and the second counter, connected in series are the first T-trigger, to the input of which the output of the pulse generator is connected, and the first element And, to the second and third inputs of which the second output and C-input of the first counter are connected, respectively a, and the output is connected to the second input of the first multiplexer, to the third input of which the output of the pulse generator is connected, the second T-trigger is connected in series, the C-input of the first counter, the second multiplexer and the third counter are connected to its input, and to the R-input of the second counter the output of the second element And is connected, due to the fact that, in order to expand the functionality by providing changeability. the coordinate center of the figure with arbitrary axes of symmetry, the first OR element is introduced, the output of which is connected to the R-input of the first counter, the first shaper is connected in series, the input of which is the input of the quenching pulse and connected to the first input of the first OR element and the R-input of the input the first RS trigger, the first and second delay elements connected in series to the second pulse shaper, the input of which is the input of the horizontal blanking pulses, and the third delay element, the output which is connected to the first input of the second element And, the second input of which is connected to the output of the entered second RS-flip-flop, to the R– and S-inputs of which the outputs of the second delay element and the first pulse shaper are connected, as well as the fourth counter to C- and R - the inputs of which the outputs of the second AND element and the second delay element are connected, the third AND element connected in series, to the first and second inputs of which the outputs of the second RS-trigger and the second form I have pulses, and the second OR element, to the second input of which the output of the first delay element is connected, the third multiplexer, the block of AND elements and the memory block, the output of which is the first output of the device for measuring the coordinates of the center of the spot, the other output of which is the output of the block of AND elements, the first the input of which is connected to the output of the first delay element, and the second inputs are connected to the outputs of the third counter and the first inputs of the third multiplexer, to the second and third inputs of which the outputs are connected, respectively the second counter and the second RS-trigger, which is connected to the recording input of the memory block, to the data inputs, the addresses and samples of which are connected respectively to the outputs of the second counter, the third multiplexer and the second OR element, as well as the output of the second AND element is connected to the second inputs of the first ele9 1598211 .. 'θ ment OR and the second multiplexer, which is connected to the B-output of the control input of which sub-sub-channel, the output of the first RS-trigger, S-input