SU960870A2 - Device for reading graphic data - Google Patents

Description

PSC: the target is achieved by introducing the device OR elements whose inputs are connected to the output impulses of the formation of displacement pulses, the OR element whose inputs are connected to the outputs of the OR elements of the second group, and the first element AND connected in series with the inputs connected to the outputs of the elements OR of the second group, the inverter, the second element I. another input is connected to the output. the house of the element, i OR, and a trigger, another input of which is connected to the output of the first element. And, and the output is connected to a pulse generator. FIG. 1 is a block diagram of the device; in fig. 2 shows a constructive implementation of an analysis unit for the distribution of pulses. The device includes an optical reticle 1, connected to stepper motors 2 and 3 by coordinates X and V, respectively, control blocks 4 and 5, blocks 6 and 7 for forming impulses of displacement, the first group of elements OR 8-11, manual switching block 12, reversible counters 13 and 14, pulse generator 15, numerical information input unit 16, information output unit 17 with start button 18, KOH-D button 19 and pulse distribution unit 2O, containing the second group of elements OR 21 and 22, the first element AND 23, element OR 24, inverter 25, second element AND 26 flip-flop 27. The device operates as follows. When reading graphic information, the contacts of the block 12, the OR 8-11 elements, to the inputs of the blocks 6 and 7, signals are given that allow the optical reticle 1 to move in positive or negative directions along the X and O axes. At the respective outputs of blocks 6 and 7, displacement pulses are generated, which are fed to the inputs of block 4 and 5 of the stepper motors, reversible counters 13 and 14, which are in the initial state, and to the INPUTS of the OR elements 21 and 22 of block 20 the following of these pulses is determined by the pulse generator 15 and can be set by the operator using a manual tuning element (not shown). If using a manual switching unit 12, a signal is given that permits the optical reticle 1 to move in 11G) in the flax or negative direction only along the X or V axis, then the impulses from the corresponding output of blocks 6 or 7 are fed to one of the inputs of the OR 21 element or the element OR 22 blsasa 20. Then, at the output of the second element And 26, pulses arise, the first of which is the trigger 27 is set to one. At the same time, from the corresponding output of the trigger 27, an adjustment signal in the form of a constant voltage of a certain value is applied to the input of the pulse generator 15, under the influence of which the oscillation frequency of the generator 15 increases in comparison with the initial tuning frequency set by the operator in Y2. times. In the case of moving the viewfinder 1 along a straight line located under some i – n (where n 1, 3, 5, 7) to the axes of coordinates, the pulses come from the outputs of block 6 to the inputs of the OR 21 element and simultaneously with the outputs of block 7 on the inputs of the element OR 22. Then, at the output of the element AND 23, pulses arise, the first of which is the trigger 27 is set to the zero state. In this case, a potential arises at the output of the trigger 27, which sets the oscillatory frequency of the generator of the 15 pulses, initially set by the operator. In the mode of comparing the results with the graphic original, punch cards or punched tapes with the results of the previous coding are used to control the movement of the optical reticle 1 and the switches of the unit 12 must be in the neutral position. The numerical information input unit 16 is started by pressing the control button 19. Block 16, advancing the carrier, reads codes of signs and absolute values of increments from it and rewrites the latter with a direct code with a minus sign and a return code with a plus sign into the corresponding reversible counters 13 and 14. The codes of signs and increments are decrypted and stored by block 16, which at the end of the count, information about the point stops the transport of punched tape or punch cards and sends through the elements OR 8-11 to certain inputs of blocks 6 and 7 permission signals. At the respective outputs of these blocks, the oscillation frequency of the generator 15 is set at a predetermined by the operator.

control pulses of stepper motors 2 and 3, which mix the optical viewfinder 1 in predetermined directions along the axes of the Xth century.

IF the viewfinder 1 moves only along one axis of coordinates, then the pulses from the corresponding output of block 6 or 7 are sent to one of the inputs of the element OR 1 or the element OR 22.

Then, at the output of element And 26, pulses arise, the first of which the trigger 27 is set to one. From the corresponding output of the trigger 27, a voltage of a certain value is applied to the input of the generator 15 of the pulses i, under the influence of which the oscillation frequency of the generator 15 is set Y2 times higher than the initial frequency set by the operator.

In the case of a straight-angle viewfinder moving at an angle — n (where n 1, 3, 5, 7) to the coordinate axes, the pulses come from the outputs of block 6 to the inputs of the OR 21 element, and simultaneously from the outputs of block 7 to the inputs of the OR element 22. Then, at the output of the element And 23, pulses arise, the first of which the trigger 27 is set to the zero state. In this case, at the output: trigger 27, a potential arises, which establishes the initially specified

the operator oscillation frequency of the generator 15 pulses.

The introduction of new elements in the block diagram of the device has significantly improved the reliability of its work.

Formula 3 and Breasts

A device for reading graphic information on the author. St. No. 538376, characterized in that, in order to increase the reliability of operation, it contains the second group of OR elements whose inputs are connected to the outputs of displacement pulse shaping units, the OR element whose inputs are connected to the outputs of the OR element of the second group, and the NF series element connected in series. The inputs of which are connected to the isodes of the OR elements of the second group, the inverter, the second element AND, the other input of which is connected to the output of the element OR, and the trnger, the other input of which is connected to the output of the first element AND, and the output Switched to the pulse generator.

Sources of information taken into account in the examination

1. USSR author's certificate No. 538376, cl. G06 K 11 / OO, 1974 (prototype).

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Claims (1)

Claim A device for reading graphic information by ed. St. No. 538376, characterized in that, in order to increase the reliability of operation, it contains a second group of OR elements, the inputs of which are connected to the outputs of the movement pulse generation units, an OR element whose inputs are connected _ to the outputs of the py elements, and a sequentially AND element, inputs with the outputs of the elements are py, an inverter, the second element is AND, the other input of which is an OR, and the horn is connected to AND, and the output is pulses.