SU1462286A1 - Information input device - Google Patents

Abstract

The invention relates to computing and can be used in systems for inputting visual information into electronic computers. The aim of the invention is to expand the scope of application due to the possibility of programming the operating modes of the device. The device contains a transmission cathode-ray tube 1, video amplifier 2, video monitoring unit 3, gating unit 4, interface unit 5, first generator 6 pulses, frequency divider 8, first comparison unit 9, first counter 10, first driver II pulses, second counter 12, first element AND 13, second comparison unit 14, third comparison block 15, second pulse shaper 16, third pulse shaper 17, first, second and third registers 18, 19, 20, second And 21 element, the first and second triggers 22, 23. The goal is achieved by maintaining in the device the second and third blocks 14, 15 of the comparison, the first, second and third registers 18, 19, 20, the first and second formers 16, 17, the first and second triggers 22, 23, the second element I 21. 1 Il. From 9 cl

Description

The first input of the first element is And 13, but the OS is compared | signal changes value

: .. “JJ II.

from 1 to. At the same time, the second pulse generator 16 pulses a pulse, the input of the first trigger 22 is reset,

the output of the ed element is not momentum. it comes in, since at the third input of the first element, And 13 is present, coming from the output of the third block 15 of the comparison. Therefore, the first 10 and second 12 counters are no longer expanded, and the information in the computer through the gating unit 4 does not pass through.

Thus, in the process of scanning this frame, the computer arrives; the information, starting from the line with no-jbiepOM Eqd, before the line with the number i beginning t is information with P i lines.

The next frame synchronization pulse generated by the first generator-i of the 6 pulses is fed to the setup input of the second counter 12 and to the first input of the second element. AND 21. This pulse sets the second counter 12 to O, but does not pass to the output of the second element 21, since the second entry of this element is | signal changes value

Ii.

from 1 to. While the second shaper 16 pulses produces a pulse, the input to the reset of the first trigger 22,

The first trigger 22 is reset by this pulse and O appears at its output, which is fed to the second input of the first element And 13, prohibiting further input of information

on the computer, and on the second output of the device, signaling that the input is information and completed,

 In order to resume operation of the device, it is necessary to write down the new values N, oH, N of it Р, respectively, in the first, second and third registers 18-20 and send a trigger pulse to the fourth input of the device.

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Claims (1)

Claim 1 An information input device comprising an information reading unit, the output of which is connected to an information input (.1M strobe unit, the output of the enablement unit C1 is connected to the input of the interface unit, the output of which is the information output of the device, the first and second synchronizing inputs of the unit the information readings are connected respectively to the first outputs of the first and second pulse generators, the frequency divider, whose input is connected to the second output of the second pulse generator, the first The second outputs of the frequency divider are connected respectively to the input of the pulse generator JBTOporo and the first input of the first comparator unit, the second output of the first pulse generator is connected to the installation input of a second trigger, and the inputs of the first, BTOpoi o and the third controller are the first, second and third inputs of the device mode setting respectively, the outputs of the first, second and third registers are respectively connected with the first input of the second comparison unit, informshlionny  li) by the entrance of the first counter and the first the input of the third comparison unit, the second inputs of the second and third comparison units are connected respectively to the outputs of the first and second counters, the output of the second comparison unit connected to the input of the second pulse generator, the output of which is connected to the reset input of the first trigger, the output of the third block of the comparative counter, the output of the first counter 20 is connected to the input of the third form- (connected to the second input of the first pulse generator and the third input of the comparator, output of the first element And, the output of the third one is connected to the input of the first driver of the pulse generator connected to the Pulses, the output of which is connected to the reset input of the second trigger, the first input of the first element And The first and second triggers are connected and are the start input of the device, the first and second inputs of the second element And are connected respectively to the input of the installation of the second counter and the output of the second trigger, the output of the second element And are connected to the recording input of the first the output of which is connected to the counting number 1 inputs of the first and second counters by the control input of the gating unit, characterized by the fact that, in order to expand the scope of application due to the possibility of programming the device operation modes, the second and third blocks are additionally entered into it compare, first, second and third registers second and third pulse number 1, second element AND, first and 35 counter, the output of the first trigger is connected to the second input of the first element. And it is the output of the device. The trigger is triggered, the inputs of the first, BTOpoi and third reg isters are respectively the first, second and third inputs of the device mode setting, the outputs of the first, second and third registers are connected respectively to the first input of the second comparator unit, informative the entrance of the first counter and the first the input of the third comparison unit, the second inputs of the second and third comparison units are connected respectively to the outputs of the first and second counters, the output of the second comparison unit 35 counter, the output of the first trigger is connected to the second input of the first element. And it is the output of the device.