SU1193700A1 - Device for reading information - Google Patents

Abstract

1.DELECTION INFORMATION DEVICE, containing a group of information sensors, carrier presence sensor, register, trigger, first and second comparators, first and second delay elements, first element NOT, first and second elements AND, first element OR, reversible counter, first output which is connected to the carrier presence sensor, the first input of the trigger and the first input of the register, the output of which is the information output of the device, the second input of the register is connected to the output of the group of information sensors, and the third One is the service output of the device and is connected to the output of the first element AND, the first input of which is connected to the output of the first element NOT, and the second input is connected to the output of the first delay element, the input of the second delay element and the second trigger input, the output of which is connected to the first input of the first a comparator, the output of which is connected to the input of the first delay element, which is different from the fact that, in order to expand the field of application of the device by ensuring the reading of information from standard perforating media without Additional synchronization holes by the method of their manual drawing, a group of service sensors, the second and third elements OR, the third element AND and the second element NOT, the output of which is connected to the third input of the first element AND, and the input - with the output of the first element OR and the first are entered into the device. the input of the third element And, the second input of which is connected to the output of the second delay element and the first input of the second element And, the second input of which is connected to the output of the second comparator and the input of the first element NOT, and the second code element I is connected to the second input of the reversible counter whose outputs are connected to the inputs of the first OR element, and the third; on the input, to the output of the third element AND, the third input is connected to the first input of the first element AND, the fourth input is connected to the output of the second element OR connected by an input with an output of a group of information sensors and a first input of a second comparator, the second input of which is connected to the second input of the first comparator and the output of the third OR element, whose input is connected to the output of groups s slezhubnyh sensors. 2. The device according to claim 1, characterized in that the group of service sensors is located in

Description

the direction of movement of the carrier after the group of information sensors at a distance not exceeding the mini size of the jumper between the perforations of two adjacent columns of the carrier.

one

The invention relates to automation and computing and can be used in devices having input information from a punched card, perfojeton by moving them manually or mechanically.

The aim of the invention is to expand the field of application of the device by providing readout of information from standard perforating media without additional synchronizing perforations by the method of their manual drawing.

The drawing shows a block diagram of a device for reading information

The device for reading information contains a sensor 1 having a no-bed, a register 2, a trigger 3, the second element OR 4, the third element OR 5 the first element OR 6, the first comparator 7, the second comparator 8, the first delay element 9, the second delay element 10, the second element NOT 11, the first element is NOT 12, the first element is AND 13, the second element is AND 14, the third element is AND 15, a reversible counter 16, a group of 17 service sensors, a group of 18 information sensors.

The diagram also shows the service and information outputs of the device.

Information reader

The mation works as follows.

In the initial state, in the absence of a carrier in the path of the reader from the carrier presence sensor 1, a inhibit signal is received, which triggers the reset state, the reversible counter 16 and the register 2.

When a carrier is inserted into the readout path from sensor 1 of carrier presence, a signal is generated enabling the operation of register 2, reversing counter 16 and trigger 3.

With further advancement of the carrier in the path, the group of information sensors 18 is then darkened, and then the group of service sensors 17. At the same time, a logical zero signal is generated at the output of the OR 5 and OR 4 elements. At comparator 7, a single level of the inequality signal is generated, so

as at the second input of the comparator 7 there is a logical unit coming from the output of the trigger 3. The unit signal level from the output of the comparator 7 passes through the first

a delay input element 9 of trigger 3 records the logical zero from the OR 4 element, after which the comparator 7 fixes an equal state and a logical zero signal is generated at its output. Thus, at any change in the signal at the first input of the comparator 7, coming from the output of the element OR 4, the output of the comparator 7 produces a pulse, equal in duration to the delay of the first element 9. In addition, the signal from the output of the first delay element goes to input element And 13.,

The signal at the service output of the device is not generated, as the fourth input of the element And 13 from the output of the element OR 5 receives a logical zero signal.

The signal of the logical unit from the output of the first delay element 9 passes through the second delay element 10 and enters the inputs of the elements 14 and 15. At the outputs

these elements do not generate a signal, since at the first input of the AND 14 element there is a logical zero coming from the output of the second comparator 8, and at the input of the AND element 15 there is a logical zero signal coming from the output of the OR 6 element.

With further progress nosi3

, bodies in the same direction and with the appearance of a perforation under the sensor of the perceptual unit, first the information sensors of group 18 are activated, then the service sensors of group 17

When the service group sensors 17 are triggered, a logical zero signal appears at the output of the OR 4 element, an inequality is fixed at the output of the comparator 7, and a logical one signal appears, which, through the first delay element 9, records the output state of the OR 4 to the trigger 3. Pulse the signal from the output of the first delay element 9 is fed to the second input of the AND element 13, which, using a signal of a logical unit, records information in the register 2 received from the information sensors 18 and generates a device readiness signal to issue information on the service output of the device.

The reversible counter 16 remains in the initial state, since the signal from the output of the first delay element 9 passes through the second delay element 10, but does not pass to the control inputs of the counter 16 through the elements 14 and 15, since at that time the first input element And 14 and the third input element And 15 there is a logical zero.

Upon further movement of the carrier in the path in the same direction, the device works in a similar way.

If at some point in time the carrier begins a reverse movement in the path, then the device works as follows.

Suppose, from the moment when the group of information sensors 18 and the group of service sensors 17 is lit, the carrier has started a reverse movement.

In this case, the follow-up sensors of group 17 are first darkened. At the beginning of the course of the element OR 4, a logical zero appears, which ensures the formation of a signal of the log unit on the outputs of the elements 9

and 10 delays. Trigger 3 is zeroed. A signal at the service output is not generated, since a single signal from comparator 8 through the element NOT 11 closes the AND 13 element.

The signal from the output of the first element

9 delay through the second element

10 delays go to the control input of the reversible counter

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16 through AND 14, since at the other input of AND 14 there is a logical unit coming from the output of the comparator 8. A reversible counter 16 increases its state by one, and a logical one appears at the output of the OR 6 element, which closes the element And 13, preventing

10 formation of a signal at the service output.

With further reverse movement, the carrier in the path is darkened information group

15 sensors 18, wherein the device does not change its state.

With further reverse movement of the carrier, the follow-on sensors of group 17 are triggered, causing

2Q to the elaboration of a signal comparator 7, which, through the second delay element 10 and element 14, generates a direct count control signal at the input. A reverse count control signal is not generated, since the first input of the AND 15 element contains a logical zero signal from the NOT 11 element. The upward counter 16 changes its state

, "In the direction of increasing the bill. Upon further movement of the carrier in the opposite direction, with each change of the signal from the output of the element OR 4, the comparator 7 generates a signal which, through the elements 9 and 10 of the delay and the element AND 14 produces a change in the state of the reversible counter 16 in the forward run.

If at some moment the carrier began to move in the forward direction, then each time the signal changes from the output of the OR 4 element, the comparator 7 generates a signal that passes through the delay elements 9 and 10 and the AND 15 element,

45 is fed to the control input of the reverse counter 16 of the counting counter, since the first and third inputs of the AND 15 element contain signals of a logical unit. With

 Further forward movement of the carrier, a change (decrease) in the state of the reversible counter to zero occurs, which corresponds to the state of the carrier to continue

55 reading information from a place interrupted by reverse movement.

Thus, the introduction of the first, second and third elements OR,

Claims (2)

1. DEVICE FOR READING INFORMATION, containing a group of information sensors, a media presence sensor, a register, a trigger, the first and second comparators, the first and second delay elements, the first element NOT, the first and second elements AND, the first OR element, the reverse counter, the first output which is connected to the media presence sensor, the first input of the trigger and the first input of the register, the output of which is the information output of the device, the second input of the register connected to the output of the group of information sensors, and the third input is is connected to the output of the device and connected to the output of the first AND element, the first input of which is connected to the output of the first element NOT, and the second input is connected to the output of the first delay element, the input of the second delay element and the second trigger input, the output of which is connected to the first input of the first comparator , the output of which is connected to the input of the first delay element, characterized in that, in order to expand the scope of the device by ensuring the reading of information from standard punch carriers without additional x synchronizing perf-holes by the method of manual pulling, the device includes a group of service sensors, the second and third OR elements, the third AND element and the second NOT element, the output of which is connected to the third input of the first AND element, and the input - with the output of the first OR element and the first input of the third AND element, the second input of which is connected to the output of the second delay element and the first input of the second And element, the second input of which is connected to the output of the second comparator and the input of the first element NOT, and the output of the second element AND is connected with the second input of the reversible counter, the outputs of which are connected to the inputs of the first OR element, and the third input is connected to the output of the third AND element, the third input of which is connected to the first input of the first AND element, the fourth input of which is connected to the output of the second OR element, connected by the input to the group output information sensors and the first input of the second comparator, the second input of which is connected to the second input of the first comparator and the output of the third OR element, the input of which is connected to the output of the group of service sensors. 2. The device according to π. 1, characterized in that the group of service sensors is located in the direction of movement of the medium after the group of information sensors at a distance not exceeding the minimum size of the jumper between the perforations of two adjacent columns of the medium.