SU1405081A2 - Device for reading graphic information - Google Patents

Abstract

The invention relates to automation and computing and can be used to enter graphic information into a computer. The purpose of the invention is to expand the field of application of the device by providing the ability to read information in relative coordinates. and, the spruce tree is achieved by the fact that, in the device, the coordinate unit of the coordinate system contains the distribution. 1 imnu. p.sov and bonds 1Y (|) ormi1yu and 1nm coordinates. and Y, each of the KOTopiiix contains a reversible counter, a counter of relative coordinates, a group of odnomraznogo | 1 dnye comparison schemes, a multi-bit circuit c) aii-ni, a trigger sign, a group of elements I. sensor start. The IP5G coordinates, the displacement coordinate coordinate sensor and the indicators, the outputs of which are the output of the device, the first rpyinibi inputs: ie, i.e. 1 are: ibciibiM input b. Yuka, the second inputs are connected to the output of the distribution. 1 pulses, the third connected to the outputs of single-bit circuits. the first inputs of which and the non-inputs of the multi-digit comparison circuit are connected from the output of the sensor to the beginning, 1-th coordinates. 3 and.h. iS (L

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The invention relates to automation and computing, can be used to enter graphic information into a computer, and is an improvement of the known device according to the author. St. No. 734752.

The principle of the invention is to expand the area of the device change by ensuring that information can be read in relative coordinates.

Fig. ((Fig. 1 shows a block diagram of a device for reading graphic information; Fig. 2 is a functional diagram of the X-coordinate forming unit; Fig. 3 is an example of the wiring block.

A device for reading graphic information (Fig. 1) contains a. Aaa-1net 1 with mutually orthogonal wire-: - {ika 1i. cjm 2 coordinates, power driver 3, gating node 4, generator 5. control block 6, logic block 7, pulse distributors 8, switches 9, unit of current and coordinate coordinates, which is 12 .- | 13 dinat X and Y.

Uz.1 1.3 (|) arrangement of the X coordinate (Fig. 2) contains indicators 14, a reversible counter 15, a relative coordinate counter 16, a group of one-digit comparison circuits 17, a multi-digit comparison circuit 18, an initial coordinate sensor 19, a shift coordinate sensor 20 . Carry information, trigger 21 characters and element group II 22.

The control unit () (Fig. 3) contains a signal polarity determining unit 23, a coarse fi accurate count pulse forming unit, 24 a frequency counter and a frequency divider 25; and 1 26 forms of synchronizing clock pulses.

B.1OK. 6 of the control (FIG. 3) has outputs 27-29, and the formation unit 13 inputs 31 33.

The device works in the following way.

The processed graphic information carrier is fixed on the working field of the tablet 1. In the recording mode of relative coordinates, the operator aligns the center of the puller 2 with a point, which is supposed to be a new center of the X and Y axes. At the same time, the control unit 6 generates signals that ensure the operation of the entire device . The X and Y coordinates of the selected point are determined at each device operation cycle, are passed to the coordinate determination block 1 1, and their values are displayed by indicators 14. With the help of the sensor 19, the initial coordinates performed on the switches, the operator dials the values of the X and Y coordinates of the points which should be made the center of relative coordinates. The X and Y coordinates of this point are displayed on the indicators 14. After setting the values

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X and Y coordinates with sensor 19, indicators 4 display zero values of X and Y coordinates. This means that a new center of X and Y coordinates is set in the working field of the planet relative to the center of coordinates of the tablet itself (i.e. relative center of coordinates X and Y).

The operation of the device in this mode is as follows. For simplicity, let us examine the operation of the node 13 of forming the X coordinate. The node () 0rmiravaniya Y coordinate works similarly. The clock forming unit 26 of the control unit 6 generates a "Cycle start (NC)" signal, which sets all the blocks and evil in the outgoing state. At the same time, 21 nodes i3 of the coordinate formation.) .X ustag YZ. pour in a funny way. which ensures the work of the reversible counter 5 in the “Position” mode. At the same time, excitation of the conductors 11lan1 eta I by them is the current ia pulses, course 27 knots 24 bps 6 at the front and about are the "rough" and "exact reference coordinates .X, which are in accordance with Ie 1.ee bits reversible counter 15 through the input 31. Node 24 4) orb. mi) 1I pulses "1 ruby o and" exactly About the reference number B-1 transfer innulsov in reversive counter 15 With plalam uzl. 23 O edit - the polarity of block 6 is equal to 1i. After that, as soon as the input of the numerals into the counter 15 is stopped, it is 1 1 1 1 that the X coordinate of the point is divided into the input 32 of the circuit 18 of the control 1 from the output 28 of the node 26 of the control block 6 of the sigpa. .l its state 1. Scheme 18 Comparion 1 Comparates the code of the number in the reversible 40.1 of the counter 15 15 with the code of the number set in the sensor 19 of the beginning. coordinates. In the case of the case of mm, the codes of these numbers are equal, since the SL of the capacitor 2 is set by the operator to the selected point). Therefore, the trigger 21 characters remain in their original state. After G1pc) of the comparison operation, distributor 12 is turned on in block 11 of determining the coordinates of the signal of node 26. Pulses are received from the 30 splitter 25 of the frequency of block 6 of the control unit to another input of the distributor. From the output of the distributor 12 and.mp, they are fed to the corresponding inputs of elements AND 22. The other inputs of 33 elements and 22 receive high-frequency pulses from the output of generator 5 (the frequency of the pulses must be at least 10 times the frequency. If the meter is executed in binary code (t) s). In the case under consideration, the impulse, l) will not pass through the high frequency through AND 22, since they are closed; and MI- - Equal to the comparable circuits 17 compared ..;:;; -: ntjTOMx. what

codes of numbers in the reverse counter 15 and sensor 19 relative coordinates are equal. That (in this way, the high frequency pulses also do not arrive at the counter 16 relative coordinates and it will remain in the initial (i.e., zero) state. The indicators 14 indicate the zero value of the X coordinate.

In that case, if the operator selects a point on the tablet working field that is different from the selected center of relative coordinates, then the reversible counter 15 of the coordinate formation unit 13 works either for addition or subtraction, while some of the elements of AND 22 are open with the potentials of comparison circuits 17 and the high-frequency pulses of the generator 5 arrive simultaneously at the counter 16 relative coordinates and the reversible counter 15. As soon as the codes of numbers in the reversible counter 15 and in the sensor 19 coordinates become equal, the elements And 22 will close down ntsialami porazr dnyh comparing circuit 17, and the counter 16 will be fixed relative coordinates X coordinate value for a new center coordinate. In this case, the sign of the X coordinate is removed from the flip-flop 21 signs. The process of determining the Y coordinate occurs similarly after determining the X coordinate. Indicators 14 display the values of the X and Y coordinates when reading various points from the graphic information carrier.

In the build-up (docking) mode of information carriers, i.e. when its dimensions exceed the dimensions of the working floor of the tablet, the device operates exactly as described above. But at the same time, the operator presets with the help of the sensor of the 20 coordinate of the information carrier, the sensor of the last read point. In this case, in each cycle of the device operation, before starting to determine the X and Y coordinates in the reversible counters 15, the code of the X coordinates corresponding to the numerical value of this point is entered by the inputs of the parallel record. Thus, this coordinate code is added to the coordinate code of the new points in the counters 5, i.e., individual sections of the information carrier will be docked.

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Claims (1)

Invention Formula The device reads the graphic information on the author. St. "N o 734752, characterized in that, in order to expand the field of application of the device by providing the ability to read information in relative coordinates, in various masses and from information carriers whose dimensions exceed the dimensions of the tablet, the block determines the coordinate penalties coordinate coordinates .X and Y, each of which contains a reversible counter, a relative coordinate counter, a group of one-bit comparison circuits, a multi-digit comparison circuit, a character trigger, a group of elements And, the initial coordinate sensor, the mixing media coordinate sensor and indicators, the outputs of which are the output of the device, the first inputs of the group of elements I are the pulse input of the block, the second inputs are connected to the output of the distribution, 1 of the pulses, the third inputs are connected to the outputs of the one-bit group comparison circuits, the first inputs of which and the first inputs of the multi-digit comparison circuit are connected to the outputs of the initial coordinate sensor, and the second inputs of the group of single-digit comparison circuits on the multi-digit comparison circuit dklyuchen. to the outputs of the reversible counter, -speed. The installation inputs of which are connected 1 to the outputs of the sensor of mixing coordinates of the information carrier, the second setting, the first inputs of the reversing counter, are connected to the installation inputs of the relative coordinates counter, are connected to the outputs of the element group And with the inputs of the indicators, the outputs of the multi-bit comparison circuit are connected to the installation inputs of the sign trigger, the outputs of which are connected to the control inputs of the reversible counter, than the control inputs of the distributor pulses .mnogorazr discharge circuit comparing and adjusting inputs corresponding stvuyushie down counter are input by the control unit for determining coordinates. FIG. 2 fig.Z