SU1327137A1 - Device for selecting images of point objects - Google Patents

Abstract

The invention relates to automation and computer technology and can be used to select images of point objects. The aim of the invention is to expand the field of application of the device by providing a selection of point objects located at the end and beginning of adjacent rows of the photosensitive element array. The device contains a matrix of photosensitive elements, a control unit, a threshold element, three counters, a first counter state decoder, four AND elements, two NL elements, three NAND elements, two triggers and a switch. The image is projected on a matrix of photosensitive elements and is converted into an electrical signal corresponding to the points of the original image, which is fed to the input of the threshold element, through which the real estate is a two-level tie. The device can select images in both raster and matrix display devices. 1 hp f-ly, 2 ill. § (L

Description

11327137

The invention relates to automation and computing and can be used to select images of point objects.

The aim of the invention is to expand the field of application by allowing the selection of point objects that are simultaneously at the end and the beginning of adjacent rows of the matrix of photosensitive elements.

FIG. 1 shows a functional diagram of the device; in fig. 2 is a control block diagram.

connected to the third inputs of the first and second elements And 6 and 7.

The fourth inverse input of the first element AND 6, forming the counting pulses For the second counter 10, is connected to the second output of the counter 10, the counting input of which is connected to the output of the element AND 6. The element And 7 serves to generate the counting pulses of the counter 11, coming from the output of the element And 7 on the second (countable) input of the counter 11. The decoder 5 of the state of the counter 4 is intended for you

A device for image selection g division (K-2) of the state counter of the scientific research institute of point objects (Fig. 1) contains 4, where K is the number of points in the information matrix 1 of the photosensitive aerial line. The inputs of the 5 decoder decoder, control block 2, threshold dinene with counter 4 outputs, and vy element 3, the first counter 4, decipher move with the first input of the element And 8, rator 5 of the counter state, the first 20 employees for selection momentum.

element AND 6, the second element And 7, the third element And 8, the first element OR 9, the second counter 10, the third counter 11, the first element AND-NO 12, the second element AND-NOT 13, the first trigger 14, the second trigger 15, the fourth element AND 16, the switch 17 and the second element OR 18.

The matrix 1 of photosensitive elements provides image conversion into an electrical signal. The input of matrix 1 is connected to the second output of control unit 2, the second inverse inputs of the third element, And

8 and the first element AND-NOT 12, the pulse gg. The installation input of the counter 10 is connected with the input of the second element AND-NOT 13, and is connected with the output of the element OR 9. The first input of the fourth element is AND 16, the second Inputs of the elements AND 6 and 7.

The control unit 2 serves for the third counter 11 to count the pulses from the third output of the control unit 2, for world pulses, ensuring a clocking time of 40 for zero-synchronous operation of the device. At the first value of the video signal. The output of the unit 2 when turning on the pi-meter 11 is connected to the second input of a single element OR 9, the pulse input setting the first counter-meter 11 and the control input 4 to the state (K-2), where K - 45 trigger numbers 15. The output of the counter is 10 points in the information line. The specified output is connected to the first (setting) input of the counter 4. The pulse frequency, at the second output of the control unit 2, is less than 50 ° of the object, which is in the limiting pulse frequency in its left or right area of the screen. Output | third exit five times. The third trigger 14 is connected by the second input of the output of block 2 is connected to the first input element AND 16, the code of which is connected to the elements of elements 6 and 7. The code threshold with the first input of the element AND-NOT 12 element 3 performing se gg and the first entry of the element OR 18. The entry lecture on amplitude and two-level installation in zero of the trigger 14 is connected by a tie (O or 1) electric

with the output element AND-NOT 12. Logic unit at the output of the trigger 15 signals the selection of a point

the signal coming from the output of the matrix 1 photosensitive elements.

connected to the third inputs of the first and second elements And 6 and 7.

The fourth inverse input of the first element AND 6, forming the counting pulses For the second counter 10, is connected to the second output of the counter 10, the counting input of which is connected to the output of the element AND 6. The element And 7 serves to generate the counting pulses of the counter 11, coming from the output of the element And 7 to the second (countable) input of the counter 11. The decoder 5 of the state of the counter 4 is intended for you

equal in duration to the time interval between the pulses generated at the second output of the control unit 2. Element output And 8 is connected

25 with the first input of the element OR 9, which serves to generate a pulse of resetting the counter 10 to the zero state, and controlling the input of the trigger 14, the counter 10 provides the counting

30 pulses coming from the third output of the control unit 2, for the time of the clock pulse with a single value of the video signal generated at the output of the threshold element 3.

Dinen with information inputs of the first and second triggers 14 and 13. The logical unit at the output of the trigger 14 signals the selection of a point-like object in the boundary left or right area of the screen. The output of the trigger 14 is connected by the second input of the element AND 16, whose code is connected to the first input of the element AND-NOT 12 and the first input of the element OR 18. The input of the zero setting of the trigger 14 is connected

with the output element AND-NOT 12. Logic unit at the output of the trigger 15 signals the selection of a point

object that is not located in the left or right edge of the screen. The output of the trigger 15 is connected to the second, inputs of the NAND 13 element, and the IL 18 element that generates a control signal that transfers the address of a point object from the output of counter 4 to the output of the switch 17. Ukanean output is the first output of the device, and the output of the OR element 18 - the second output of the device. The setup input of the trigger 15 is connected to the output of the NAND element 13. The output of the counter 4, which serves to form the address of the point, the initial states of the counters are zero.

object connected to the input of the switch 17.

The control unit 2 (Fig. 2) contains a pulse generator 19, a counter 20, a counting flip-flop 21, a power-on pulse generator 22, the output of which, being the first output of block 2, is connected to the installation input of the counter 20 with a conversion factor of the same . The counting input of the counter 20 is connected to the output of the generator 19, the output of which is the third output of block 2. The output of the counter 20 is connected to the counting input of flip-flop 21, the output of which is the second output of block 2.

The device works as follows.

When the power is turned on, a single pulse appears at the output of shaper 22, setting the counter 4 to state (K-2). This signal also keeps the counter 20 in the zero state. Upon the expiration of the pulse, the counter 20 counts the pulses coming from the output of the generator 19.

The recorded image is projected onto a matrix of 1 photosensitive

signal coming from the first output of block 2 when the power is turned on. The termination of the issuance of the address to the output of the device is carried out with understandable elements and is converted into an electric line. The installation is carried out by a trio signal corresponding to the luminous points of the original image. The electrical signal generated by the matrix 1 is fed to the input of the threshold element 3, which performs 50 times of the leading edge of the clock and amplitude selection of the signal and a two-level reference. The synchronization of the matrix 1 is performed by the clock pulses from the second output of block 2. The video signal from the output of the threshold element 3 is fed to the third inputs of the And 6 and 7 elements. With a single value of the video signal,

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of the impulse leading to the appearance of a logical zero at the output of the AND-NE 13 element and resetting trigger 15 to the zero state. The installation of counters 10 and 11 in the initial state is carried out when writing a logical unit in the trigger 15.

A point object that is not located at the boundary points of the screen corresponds to counter pulses of counter 10, and for zero it is for counter 11. Since the pulse frequency at the third output of control unit 2 exceeds the frequency of clock pulses at its second output five times, then the duration of the clock pulse is carried out five times strobing the video signal. This ensures the appearance of a single level at the first outputs of counters 10 and 11, respectively, at a single and zero levels of a video signal, provided that

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0

The device ensures that the addresses of the light points correspond to the scintillating point objects. The dotted object at the beginning of the screen matches

0 a combination of 10 video signal values generated at the output of the threshold element 3. In this case, during the passage of a single value of the video signal, the first output of the counter 10 appears as the level of the logical unit, the inputs to the trigger input 15. With the subsequent zero value of the video signal at the counter output 11 the level of logical unit appears,

0 leading to the installation of the trigger 15 in one state. This leads to the appearance of a logical unit at the output of the element OR tS. Under the influence of this signal, the address of a point object generated by counter 4 is transmitted to the output of switch 17. As the address of a point object is output after two clock pulses have passed since the video signal unit level appeared, a corrector is applied at the initial moment of time. setting counter 4 to the state (K-2), where K is the number of points

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signal coming from the first output of block 2 when the power is turned on. The termination of the issuance of the address at the output of the device is carried out at the line. The installation is carried out by the front edge of a clock.

 line. The installation is carried out by the front edge of a clock.

of the impulse leading to the appearance of a logical zero at the output of the AND-NE 13 element and resetting trigger 15 to the zero state. The installation of counters 10 and 11 in the initial state is carried out when writing a logical unit in the trigger 15.

A point object that is not located at the boundary points of the screen corresponds to

A combination of 010 video signal values. In this case, the level of the logical unit at the output of counter 11 appears at the time of the first zero value of the video signal. The specified signal sets the zero state of the counters 10 and 11 regardless of their initial states.

In the subsequent video signal unit value, a logic unit level appears at the first output of counter 10, and this unit is recorded in trigger 15, if at the next cycle the value of the video signal changes to zero.

In this case, the counting pulses for the counter 11 are formed at the output of the And 7 element. The occurrence of a single level at the output of the specified counter ensures that the trigger 15 is set to the single state, which results in the output of the address at the device output. The same signal sets the counters 10 and 11 to the zero state. The trigger 15 is reset to the zero state by the leading edge of the next clock pulse.

 If a single value of a video signal does not change for several cycles, then at the second cycle a single level occurs at the second output of counter 10, which prohibits the formation of counting impulses for counter 10. This state remains unchanged until the video signal appears to be zero. Because the logical unit is on the second; the output of the meter 10 corresponds to the eighth state of the counter, then at its first output there is a logical zero value. Therefore, on the leading edge of the signal at the output of the counter 11 to the trigger 15, it records a logical zero, which does not ensure the transmission of pulses to the device's code.

When successively following zero values of a video signal, the unit level at the output of counter 11 at each clock cycle resets the counters 10 and 11 to the zero state.

To ensure the selection of point objects that are at the end of the i-th row, trigger 14 and the decoder 5 of the counter state are also introduced to logical elements AND 8, AND 16, AND-NO 12

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f5

20

25

35

40

45

50

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Depot 5 provides for the (K-2) state of the counter. If at the end of the line there is an image of a point object, i.e. value of the video signal corresponds to a logical one, then a single level appears at the first output of the counter 10. At the end of the clock pulse, the trigger 14. accepts the value of the logical unit by the signal coming from the output of the AND 8 element to the control input of the trigger 14. This signal also resets the counter 10 to the zero state.

At the next cycle, when the state of counter 4 becomes equal (K-1), i.e. will correspond to the address of the point at the end of the line, the level of the logical unit will be at the output of the element AND 16, which will result in the output signal of the element OR 18 signal to increase the current address. This signal is equal in duration to the duration of the clock pulse, since after its termination, at the output of the NAND 12 element, a signal is produced to reset the trigger 14 to the zero state. one . ,

The proposed device selects images of point objects in both raster and matrix information display devices.

The device has no restrictions on the duration of the fronts of signals corresponding to different levels of the video signal, since during the time of the clock pulse, its fivefold gating takes place.

Claims (2)

1. Device for selecting images of point objects, containing a matrix of photosensitive elements, the input of which is connected to the first output of the control unit, and the output is connected to the input of the threshold element, the first counter, the outputs of which are connected to the information inputs of the switch, the output of which is the information output of the device I distinguish, in that, in order to expand the scope of application by providing the possibility of separating point objects that are simultaneously at the end and beginning of adjacent rows of matrices s the photosensitive elements are introduced into it the counter state decoder, four AND elements, two OR elements, two NAND elements, the second and third counters, the first and the second B-triggers, the information inputs of the D-triggers are connected to the information output of the second counter, the control output which is connected to the inverse input of the first element AND, the control input of the first D-flip-flop is connected to the first input of the first OR element and to the output of the third AND element, the control input of the second D-flip-flop is connected to the second input of the first OR element to the setup input and the third him the counter, the installation inputs of the first and second D-flip-flops are connected respectively to the outputs of the first and second elements AND-NOT, the first output of the control unit is connected to the first input of the first counter, whose information outputs are connected to the inputs of the counter decoder of the counter, the output of which is connected to the forward the input of the third element And, the inverse input of which is connected to the first output of the control unit, the second output of which is connected to the second input of the first counter, and the third output to the first inputs of the first and second elements s And kotork second inputs connected to the first output of the control unit, the first output of which is connected to a nep feoMy entry fourth AND gate, to inverted inputs of the AND tre- tego and first member NAND and the clock input of the second element NAND, whose direct input, connected to the first input of the second OR element, is connected to the output of the second D-flip-flop, the output of the first D-. the trigger is connected to the second input of the fourth AND element, the output of which is connected to the direct input of the first AND-NOT element and the second input of the second OR element, the output of which is the control output of the device and connected to the control input of the switch, the output of the threshold element is connected to the third the input of the first element And the inverse input of the second element And, the output of which is connected to the counting input of the third counter, the output of the first element OR connected to the installation input of the second counter, the counting input of which connected to the output of the first element I. 2. The device according to claim 1, wherein the control unit comprises a master oscillator, the output of which is the third output of the block, the reset pulse shaper, the output of which is the second output of the block, and sequentially connected counter and trigger, the output of which is the first output of the block, the output of the master oscillator being connected to the counter input of the counter, the setup input of which is connected to the reset pulse shaper. fpue.f KSffOKOHS.7 n blocks 1Л.6,7,8 //, / J / block h Phie, 2