SU875375A1

SU875375A1 - Information input device

Info

Publication number: SU875375A1
Application number: SU802895244A
Authority: SU
Inventors: Эдуард Иосифович Петруневич; Геннадий Сигизмундович Свидерский
Original assignee: Предприятие П/Я Г-4493
Priority date: 1980-03-17
Filing date: 1980-03-17
Publication date: 1981-10-23

Description

(.54) УСТРОЙСТВО ДЛЯ ВВОДА ИНФОРМАЦИИ(.54) DEVICE FOR ENTERING INFORMATION

Изобретение относитс к вычислительной технике и может быть использовано при считывании информации с перфоленты. The invention relates to computing and can be used to read information from punched tapes.

Известно устройство дл ввода информации , содержащее блок с.читывани , элемент ИЛИ, элемент задержки, первый и второй одновибраторы, регистр,блок суммировани и элементы И ij.A device for inputting information is known, comprising a read-only block, an OR element, a delay element, first and second one-shot, a register, a summation block, and And ij elements.

Недостаток этого устройства состоит в низкой помехозащищенности, так как возможно ложное считывание информации при разбросе скоростей прот жки носител информации.The disadvantage of this device is low noise immunity, as it is possible to falsely read the information when the velocity spreads of the data carrier are spread.

Наиболее близким по технической сущности к предлагаемому вл етс устройство дл ввода информации, содержащее блок считывани , синхоовыход которого подключен к входу блока синхронизации , информационные выходы к соответствующим входам блока усилителбй , выходы которого подсоединены к соответствующим единичном входам блока триггеров, выходы которого подключены к соответствующим первым входам блока ключей, выходы которого соединены с соответствующими первьлми входами блока буферной пам ти, выход первого анализатора фронта сигнала соединен с обнул ющими входами блокаThe closest in technical essence to the present invention is an information input device comprising a read unit, the synchronous output of which is connected to the input of the synchronization unit, information outputs to the corresponding inputs of the amplifier unit, whose outputs are connected to the corresponding single inputs of the trigger unit, the outputs of which are connected to the corresponding the inputs of the key block whose outputs are connected to the corresponding first inputs of the buffer memory block, the output of the first signal front analyzer connected to the block inputs

триггеров, выход второго анализатора фронта сигнала соединен со вторыми входами блока ключей и через блок управлени - со вторым входом блока буферной пам ти Г2.the triggers, the output of the second signal-edge analyzer is connected to the second inputs of the key block and through the control unit to the second input of the buffer memory block G2.

Недостатком известного устройства вл етс низка помехозащищенность, выражающа с в повторном считывании информации при вибрации носител ин10 формации.A disadvantage of the known device is low noise immunity, which is expressed in re-reading information when the information carrier is vibrated.

Цель изобретени - повышение помехозащищенности устройства.The purpose of the invention is to improve the noise immunity of the device.

Claims

This goal is achieved by the fact that, in an information input device containing a reading unit, the sync output of which is connected to the input of the synchronization unit, the information outputs are connected to the corresponding inputs of the amplifier unit, the outputs of which are connected to the corresponding single inputs of the trigger unit, the outputs of which are connected to the corresponding the first inputs of the key block, whose outputs are connected with the corresponding first first inputs of the buffer memory block, the output of the first signal-front analyzer is connected to zeroing the trigger block inputs, the output of the second signal edge analyzer is connected to the second key block inputs and through the control unit to the second input of the buffer memory block, a third signal front analyzer, a trigger, a key and an OR element, whose inputs are connected to the corresponding outputs of the amplifier unit, are entered , output through the third signal-front analyzer - to a single trigger input, zero input of which is connected to the output of the second signal-front analyzer, and output to the first key input, whose second input is connected to the output at the synchronization unit, and the output to the inputs of the first and second signal-front analyzers. The drawing shows schematically the proposed device. The device contains a reading unit 1, a block of 2 amplifiers, a block of synchronization sync 3, first, second and third analyzers 4.5 and 6 of the signal front, a block of 7 keys, a block of 8 buffer memory, a block of 9 controls, an element of OR 10, a block of 11 flip-flops , trigger 12, key 13. The device operates as follows. Code lines 1, read by block 1, are fed through amplifiers of block 2 to inputs of block 11 and element OR 10. Analyzer 6, detected according to the leading-edge allocation scheme, converts trigger 12 into a single state, allowing the key 13 to pass through a clock pulse represented by a sync track on a punched tape, from the output of block 1 through block 3 to the inputs of analyzers 4 and 5. The trigger reset pulse detected from the sync signal by the analyzer 4, performed according to the leading edge pattern, regenerates the triggers of block 11 to the initial zero state Since the duration of the code signals exceeds the duration of the reset pulses, after the end of this pulse, the triggers of the block 11 are set to the state corresponding to the first 1 signals from the block 2, and are saved until the next reset pulse. Gates from the output of the analyzer 5, which is made according to the back-front of the sync pulse, control the passage of code signals in block 7 and through block 9 in block 8 of the buffer memory. With the same gates, the trigger 12 is set to the zero state, thereby prohibiting the passage through the key 13 of more than one clock pulse. Thus, the introduction of distinctive features provides an increase in the noise immunity of the device by eliminating the re-reading of the same code combination from the storage medium. Apparatus for inputting information containing a reading unit whose sync output is connected to the input of the synchronization unit, information outputs to the corresponding inputs of the amplifier unit, the outputs of which are connected to the corresponding unit inputs of the trigger unit, the outputs of which are connected to the corresponding first inputs of the key block whose outputs connected to the corresponding first inputs of the buffer memory block, the first analyzer of the signal front, the output of which is connected to the zero inputs of the tr Igger, the second signal edge analyzer, the output of which is connected to the second inputs of the key block and through the control unit to the second input of the buffer memory block, characterized in that, in order to increase the noise immunity of the device, a third signal front analyzer, trigger, key, and the OR element, the inputs of which are connected to the corresponding outputs of the amplifier unit, the output through the third signal edge analyzer - to a single trigger input, the zero input of which is connected to the output of the second signal front analyzer, and Exit key to the first input, a second input of which is connected to the output unit. . synchronization, and the output - to the input of the first and second signal front analyzers. Sources of information taken into account during the examination 1. USSR author's certificate No. 630625, cl. S 06P 3/00, 1977,

2. USSR author's certificate number 495660, cl. Q 06P 3/04, 1974 (prototype).