SU963011A2 - Graphic information readout device - Google Patents

Description

(54) DEVICE FOR READING GRAPHIC INFORMATION

one

The invention relates to automation and computer technology, in particular to television devices for reading and entering graphic information into electronic computers.

According to the main author. St. No. 858032, a graphic information reading device is known, which contains a television sensor connected to an indicator, a discrete raster generator, Q and a counter, the second input of which is connected to a discrete raster generator, optically connected. with the indicator and connected via a threshold element with the element I, the output of which is connected to the register write bus, whose information inputs are connected to the outputs of the counter. The outputs of the counter and the register are connected to the corresponding inputs of the comparison unit, to the outputs 20 of which are connected to the marker shaper, also connected to the discrete raster generator, the inducer and the element I.

Using a known device, it is possible to read coordinates. The specified marker is moved by the operator using the coordinate remover - light pen 1 J.

In this device, the coordinates of the mar- are represented by the codes in the register and are the absolute GIs, since the zero value of the coordinates of the coordinates always corresponds to the left upper point of the raster. However, in topological analysis of the image, as a rule, it is necessary to know not the absolute coordinates of the image elements, but the level of protection relative to a certain raster point.

The disadvantage of the random device 713 is the impossibility of obtaining relative coordinates. To determine the coordinates of points relative to some arbitrary raster point (not zero) using a known device, you must first specify the starting point of the new coordinate system {at, then enter the coordinates of the second-dimensional image points and calculate the relative coordinates values. This leads to a decrease in speed and. Additional loading of computers. The purpose of the invention is to expand the functionality of the device by determining the relative coordinates of the elements of the television raster, which goal is achieved, the known device additionally contains OIR body gains and signal conditioners in the X and Y coordinates, the switch and the additional register, driver marker signal and comparison unit, the inputs of which are connected to the outputs of the counter and the additional register, the inputs of which are connected to the outputs of the main register and switch In the area of education, one of the entrances to the output of the supplementary department of the general development of the general education is part of the general education of the general education department of the general education. sravneysh, and the output of the horizontal sync signal of the evizion sensor is connected to the other inputs of the increments of the increments along the coordinates X p Y of the signal conditioner A sign of the HUGO bit on the X coordinate, the output signal of the frame synchronous TV and audio sensor is connected to other inputs of the increment calculator and the M1 sign changer along the Y coordinate, and the output of the discrete raster generator is connected to the auxiliary input of the incremental calculator along the X coordinate. Fig. 2 shows the circuit of the increment calculator; Fig. 3 shows the sign bit generator circuit. The device for reading the graphic format contains a television sensor 1, indicator 2, and a discrete raster generator 3 , counter 4, puller 5 coordinated, threshold element 6, element 7, marker signal forgeri 8, register 9, comparison block 10, additional register 11, additional comparison block 12, switch 13, additional marker signal generator 14, compute 15 prt Signals and shaper 16 of the sign bit signal along the Y coordinate, calculator 17 increments and shaper 18 of the sign bit signal along the Y coordinate, Calculators 15 and 17 increments can be performed according to one of the known schemes (Fig. 2). It contains triggers 19 and 2O, the elements 21 and 22, the element OR 23, the counter 24. Signature bit signal forpowater 16 and 18 can be performed according to one of the known circuits (Fig. 3). It consists of triggers 25-27, with triggers 25 and 26 with logic on the S input. The device works in the following way. The video output from the output of the TV-sensor 1 is fed to the first input of the indicator 2, on the screen of which an analysis of the image is displayed. The frame and line sync pulses from sensor 1 are fed to the generator 3 of the discrete raster and counter 4. The generator 3 during each row of the decomposition field generates pulses that are synchronized with the start of the sweeps. These pulses arrive at the counting input of counter 4, the output signals from the triggers of which unambiguously determine the coordinates of the elements of the discrete raster, and hence the coordinates of the elements of the television image. These signals arrive at block 10, where they are compared with the code received from register 9. At the moments of comparison of codes, the X coordinate (line) and Y coordinate (field) at the outputs of block 10 generate pulses that trigger the marker signal shaper 8. Shaper 8 is a counting circuit synchronized by pulses from block 10, forming video pulses of a rectangular, round or other shape marker around a raster element corresponding to the code at the outputs of register 9. Pulses coming to shaper 8 from a discrete raster generator 3 , provide a temporary coincidence of the video pulses of the marker with the elements of the discrete raster. The video pulses of the marker arrive at the second input of the element 7 and the second input of the indicator 2 and form a luminous contour on the screen of the last around the specified element of the television raster. The dimensions and shape of this contour are determined by the circuit of the former 8. 50 The 5-coordinate remover (light pen) is placed in the center of the light contour on the indicator screen 2 with an opfator and moves in the desired direction. When the puller crosses the 5 coordinates of the marker contour, a pulse appears at its output that exceeds the threshold of triggering the threshold element 6. The signal from the threshold element b arrives at the first input of element 7. At the same time, the second signal of the element 7 arrives at the marker. At the output of the element And 7, a signal is generated that arrives at the setup input of the first register 9, in which the coordinate code of this intersection element is recorded. Next, the code of the reconditioner 9 is compared in block 10 with the current code of the counter 4, and at the moments of the moment the pulses are triggered, triggering the folder 8. Thus, the intersection by the puller of 5 coordinates of the marker element will cause the movement of this marker in the direction of movement of the puller of 5 coordinates. As a result, the contour will track the movement of the imaging 5 coordinates along the indicator 2 screen, and the code taken from the flip-flops of register 9 will correspond to the coordinate of the readable image element. Moreover, the starting point of reference is the beginning of the discrete raster. The coordinates of the raster element to be counted relative to any arbitrary raster element are formed as follows. With the help of the 5-coordinate remover, the marker is placed on the raster element, relative to which it is necessary to read the coordinates of the raster elements of interest to the operator, i.e. define increments. Pressing the switch button 13 into register 11 registers the code of register 9. The code of register 11 is compared with the current code of counter 4 in block 12 of the comparison. When comparing the codes, the pulses from block 12 trigger the second shaper 14 of the marker signal, which forms a mark on the screen of the indicator 2 - the center of the new coordinates Xp and YP. Next, the first marker is moved by the operator to the selected point and its relative coordinates are formed as follows. The inputs of the calculator 15 increments along the X coordinate (Fig. 2) receive the signals from blocks 10 and 12 of the comparison at the moments of coincidence of the current code values of the counter 4 -c with the codes of registers 9 and 11. These pulses go to 5 inputs of the trigger 19 and 20 calculator 15 which are set in the zero state by each line sync pulse received on their R inputs. Suppose that the operator has moved the first marker to the left of the reticle. In this case, the pulse from block 10 sets the trigger 19 to the logical state, the opening element AND 21 for passing pulses from the generator 3 of the discrete pacTjja through the OR element 23 to the counting input of the counter 24. Ichshulz from the block 12 in turn sets the trigger 20 to logical .. Then the signal from its inverse output closes the element 21 and stops the passage of pulses from generator 3 to counter 24. If the operator moves the first marker to the right of the viewfinder, then pulses from generator 3 to counter 24 will pass through elements 22 and or 23. Thus, irrespective of the temporal location of the pulses from blocks 10 and 12, the number of pulses corresponding to the distance in the coordinate between the first marker and the second sight marker will arrive at the counter 24. The shaper 16 sign-by-bit coordinate works as follows. The trigger sync pulses of the triggers 25 and 26 are set to the zero state. Suppose that the first marker is moved to the left across the screen from the second marker. Consequently, the impulse with 10 is comparable to the impulse from the comparison unit 12, and switching the trigger 25 to the logical 1 state. At the same time, the signal from its inverse output will prevent the trigger 26 from switching to the logical state when receiving from the trigger switching comparison unit 12 25 fix the trigger 27 in a logical order until the first marker is present. moved to the right relative to the second. In the case when the read raster element is located to the right of the viewfinder, the output of flip-flop 27 fixes the level of logic O. Thus, the sign bit is formed along the coordinate X). In order to determine the shrinkage of Y and the formation of a sign bit of Y, the device contains similar blocks 17 and 18.

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Thus, the proposed device which is connected to the outputs of the counter

The structure allows to format simultaneously and an additional register, the inputs of which

but the coordinates of the raster elements as associated with the outputs of the main register

Claims (1)

absolute values (register code 9), pa and a switch, one of the indicat and in relative inputs (the origin is $, the torus is connected to the output of the additional register code 11, the coordinate values are the code on the counter outputs 24 blocks 15 and 1.7 | the code at the output of the trigger 27 of blocks 16 and 18). The positive effect of the invention is that the relative coordinates of the coincident elements of the raster ov are obtained simultaneously with the absolute ones, which eliminates machine operations for calculating increments and, as a result, increases quickly The action of the device. The invention of the device for reading the graphic image of the author; St. № 858032, -o tl and ch and e with the fact that, in order to expand the functional possibilities due to the determination of the relative coordinates of the elements of the television raster, it contains increment calculators and signal conditioners of sign bits on the coordinates Y and Y , the switch and the additional register, the marker signal generator and the comparison block, the inputs of the marker signal generator, whose inputs are connected respectively to the output of the discrete raster generator and the outputs of the additional comparison block, are one of the inputs of the calculator The increments and shaper of the sign bits on the X and Y coordinates are connected to the corresponding outputs of the comparison blocks, and the output of the horizontal synchronization signal of the television sensor is connected to other inputs of the calculation of the increments on the X and Y coordinates to the Shared-Egnal digit of on the X coordinate, the output of the frame synchronization signal of the television sensor is connected to other inputs of the increment calculator and the sign bit former on the Y coordinate of the output of the discrete raster generator n to the auxiliary input of the increment calculator along the X coordinate. Sources of information taken into account in the examination 1. Author's certificate of the USSR № 858032, cl. G06 K 11/00, O8.10.79 (prototype).