SU1061162A1 - Device for graphic information readout - Google Patents

Abstract

DEVICE FOR READING GRAPHIC INFORMATION, containing a tablet with light sources, alone. the inputs of which are connected to the first decoder, while others are connected to the outputs of the corresponding elements NOT connected to the second decoder, the coordinate remover connected to the amplifier, the first counter, one input of which is connected to the output of the element I, and the outputs connected to the inputs of the first decoder and to one the inputs of the elements And the group, the second counter, the outputs of which are connected to the inputs of the second decoder and to the other inputs of the elements of the AND group, and the sensor connected in series, the first single vibrator, the output of which It is connected to the inputs of the first and second counters, the first trigger, one output of which is connected to another input of the elements of the AND group, and a pulse generator connected to the other input of the second counter and to one input of the terminal I ,. This is because, in order to improve the speed of the device, it contains a second trigger, the counting input of which is connected to the amplifier, and the setup input is connected to the first one-oscillator, OR elements, some inputs of which are connected to one output of the first trigger, current outputs (P of the second trigger, and the outputs of the OR elements are connected to other inputs of the corresponding decoders, and the second one-vibrator, whose input is connected to the single output of the second trigger, the zero output of which is connected to another input of the I element, and the output of the second single vibrator is connected to another input first trigger

Description

SD

The invention relates to automation and computing, in particular to devices for reading graphic information.

A device for reading graphic information is known, containing a tablet with coordinate tires connected via corresponding decoders to counters connected to a control unit, the input of which is connected to an amplifier, connected to a coordinate picker, a logic unit connected to the control unit and to the interface unit fl.

A disadvantage of the known devices is its structural complexity. ..

Closest to the invention is a device for reading graphic information containing a tablet with light sources connected to one decoder directly, and to another through appropriate inverters, counters connected to corresponding decoders and with a group of elements And, an atch of signals connected to a single vibrator , the output of which is connected to the counters and with one trigger input, the other input of which is connected to the amplifier connected to the coordinate remover, and the output of the trigger is connected to the input ele And ENTOV groups and to one input of AND gate, the other input of which is connected to a pulse generator and connected to the first counter through the frequency divider and - 2 to the second counter,

This device is not fast enough. .

The purpose of the invention is to increase the speed of the device.

The goal is achieved by the fact that in a reader, graphic information containing a tablet with light sources, some of the inputs are connected to the first decoder, and others are connected to the outputs of the corresponding NOT elements connected to the second defroter, the coordinate remover connected to the amplifier, the first counter, one input of which is connected to the output of the AND element, and the outputs are connected to the inputs of the first decoder and to the bottom inputs of the AND elements of the group, the second counter, the outputs of which are connected to the inputs of the second desh The communicator and to the other inputs of the elements of the And group, and the signal sensor connected in series, the first one-shot, the output of which is connected to the other input of the elements of the And group.

and a pulse generator connected to another input of the second counter and to one input of the AND element, a second trigger is introduced, the counting input of which is connected to the amplifier, and the setup input is connected to the first one-oscillator, OR elements, one input of which is connected to one output of the first trigger, others connected to the corresponding outputs of the second trigger, and the outputs of the OR elements are connected to other inputs of the corresponding decoders, and the second one-oscillator, whose input is connected to the single output of the second trigger, is zero the course of which is connected to another input

element And, and the output of the second one, the vibrator is connected to another input of the first trigger.

FIG. 1 is a block diagram of the device according to FIG. 2 - time diagrams that show his work ..

The device contains a tablet 1 with light sources (radiating elements), first 2 and second 3 encoders, elements 4 NOT, 5 coordinate remover (pointing pen), amplifier b, sensor 7 signals, first one vibrator 8, first trigger 9, controlled oscillator 10 pulses, the first 11 and second 12 counters, a group of elements 13 I.

l5, second trigger 15, elements 17 and 16 OR.

The device works as follows.

A 5-coordinate puller with a radiation receiver located at its end is mounted above the corresponding letter-emitting element. Then, when the sensor 7 is closed, the signal from its output (Fig. 2a) is fed to the input of the one-shot 8, from the output of which the generated short pulse (Fig. 2b) goes to the second setting input of the trigger 9, to the reset of the counters 11 and 12 of the trigger 16, which causes a reset of these counters and the trigger 16 (Fig. 2m, n) to the initial state O, simultaneously the trigger 9 is set to state 1, and the high level signal from its first output (Fig. 2c) is fed to the control input of the generator.10 pulse - owls and allows his work.

At the same time, a high-level signal from the first output of the trigger 16 (Fig. 2m) arrives at the first stroke of the AND 14 element, preparing it, and the inputs of the OR 18 element, the second input of which receives a high level signal (Fig. 2c)

from the first release of the trigger 9. In

As a result, a signal prohibits its operation from the output of the OR 18 element to the gate input of the decoder 3, and high level signals are received from the outputs of the decoder 3 to the second inputs of the radiating elements, preparing all the radiating elements for ignition. In this case, the low-level signal (Fig. 2n) from the second output of the trigger 16 through the OR element 17 enters the gate input of the decoder 2, preparing it for operation.

The pulses from the output of the generator 10 (Fig. 2d) are fed to the input of the counter 12 and through the prepared element And 14 to the input of the counter 11. The counters 11 TL 1.2 start counting the pulses (Fig. 2 dl), the signals from the outputs of which arrive to the inputs of the corresponding decoders. However, only the signals of counter 11 are decrypted, since the operation of the decoder is prohibited. The signals from the outputs of the decoder 2 through the elements HE 4 arrive at the first inputs of the prepared radiating elements, causing them to glow, and the scanning is carried out not consecutively by one radiating element, but by whole columns of radiating elements.

When the radiating element is ignited, above which the pointing pen 5 is located, the signal of the radiation receiver (Fig. 2o) through the amplifier 6 enters the counting input of the trigger 16 and transfers it to state 1 (Fig. 2m, n), while the signal is low ( Fig. 2m) from the first output of the trigger 16 prohibits the passage of pulses from the output of the controlled generator. 10 through the element And 14 to the input of the counter 11 and stops it. At the same time, the same signal through the element OR 18 enables the operation of the decoder 3, and the high level signal (Fig. 2n) prohibits the operation of the decoder 2. From the outputs of the decoder 2, through the elements 4 NOT, a low level signal arrives to the first inputs of all radiating elements work, and from the output of the decoder 3 to the second inputs of the radiating elements receive signals sweep in rows, causing the emission of radiating elements intact

in rows.

When the radiating element is ignited (secondary), over 1 lm there is a pointing pen 5, the second signal from the radiation receiver through

the amplifier 6 enters the counting input (Fig. 2o) of the trigger (Fig. 2m, n) 16 and sets it to the state O. At the same time, the negative edge of the signal from the second output of the trigger

16 starts the one-shot 15, and a short pulse (Fig. 2n) from its output goes to the second installation input of the trigger 9 and translates it to the state O (Fig. 2c),

The low level signal from the first output of the trigger 9 prohibits the operation of the pulse generator 10, which causes the counter 12 to stop and through the first 17 and second 18 elements OR allows the signals to pass through the first 2 and second 3 decoders, and the code is recorded in the counter 11. (FIG. 2d-g) coordinates of the column in which the selected radiating element is located, and in counter 12, the code (Fig. 2, -l) of the coordinates of the line to which the selected radiating element belongs is recorded.

At the same time, a high signal from the second trigger output 9

enters the gate input of the valves 13 and opens them; as a result, the position code of this letter comes from the outputs of counters 11 and 12 to the output of the device, and also through

decoders 2 and 3 causes a constant luminescence of the radiating element corresponding to the selected letter, after which the device returns to its original state. Further cycles

entering new coordinates are repeated in the same way.

The introduction of new elements of the elements, as well as new constructive links, allows us to significantly increase the speed of the device.

2

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Claims (1)

DEVICE FOR READING GRAPHIC INFORMATION, containing a tablet with light sources, some inputs of which are connected to the first decoder, and others are connected to the outputs of the corresponding elements NOT connected to the second decoder, a coordinate picker connected to the amplifier, the first counter, one input of which is connected to the output element And, the outputs are connected to the inputs of the first decoder and to one inputs of the elements of the And group, the second counter, the outputs of which are connected to the inputs of the second decoder and to other inputs of the elements And g groups, and series-connected signal sensor, the first one-shot, the output of which is connected to the inputs of the first and second counters, the first trigger, one output of which is connected to the other input of elements of the And group, and a pulse generator connected to the other input of the second counter and to one the input of the AND element, and, on the other hand, in order to increase the speed of the device, it contains a second trigger, the counting input of which is connected to the amplifier, and the installation input is connected to the first one-shot, OR elements, one in rows are connected to one The yields _β house first flip-flop, the other sub- $ g key to the corresponding outputs of the second flip-flop, and the outputs of OR elements are connected to respective other inputs of decoders and a second monostable multivibrator whose input is connected to the single output of the second flip-flop, the output of zero which is connected to another input of the element And, and the output of the second one-shot is connected to another input of the first trigger. SU, 1061162