SU911568A1

SU911568A1 - Device for reading-out information from punched tape

Info

Publication number: SU911568A1
Application number: SU802961368A
Authority: SU
Inventors: Владимир Борисович Кондратьев; Владимир Александрович Орленко; Александр Михайлович Соколов
Original assignee: Предприятие П/Я В-2969
Priority date: 1980-07-15
Filing date: 1980-07-15
Publication date: 1982-03-07

Description

(5) УСТРОЙСТВО дл СЧИТЫВАНИЯ ИНФОРМАЦИИ с ПЕРФОЛЕНТЫ(5) DEVICE FOR READING INFORMATION WITH PUNCHES

ii

Изобретение относитс к автомати ке и вычислительной технике и может быть использовано дл ввода информэ ции с перфоленты в ЭЦВМ.The invention relates to automation and computer technology and can be used to input information from a punched tape tape into an electronic computer.

Известно устройство дл считывани информации с перфоносител , со-, держащее информационные фотоприемники , подключенные к первым входам усилителей, и фотоприемник синхронизации , соединенный с входами усилител синхронизации и суммирующего усилител , выход которого соединен со вторыми входами усилителей 1 A device for reading information from a perfusion carrier is known, containing information photoreceivers connected to the first inputs of amplifiers and a synchronization photodetector connected to the inputs of the synchronization amplifier and summing amplifier whose output is connected to the second inputs of amplifiers 1

Недостатком данного устройства вл етс то, что в нем отсутствует защита от повторного считывани информации строки перфоленты при стартстопном режиме ввода.The disadvantage of this device is that it lacks protection against re-reading the information of the punched string in the start-stop input mode.

Известно также устр(ойство, содержащее информационные фотоприемники, соединенные с усилител ми, выходы которых соединены с первыми входами элементов И, вторые входы которых соединены с выходом триггера, первыйIt is also known a device (a device containing informational photodetectors connected to amplifiers, the outputs of which are connected to the first inputs of the elements I, the second inputs of which are connected to the output of the trigger, the first

вход которого соединен с выходом усилител синхроимпульсов, вход которого соединен с выходом фотоприемника сигналов синхродорожки 23.the input of which is connected to the output of the sync pulse amplifier, the input of which is connected to the output of the photodetector of the signals of the sync track 23.

Недостатком известного устройства вл етс также отсутствие защиты от повторного считывани информации в старт-стопном режиме ввода,A disadvantage of the known device is the lack of protection against re-reading information in the start-stop input mode,

Цель изобретени - повышение надежности работы устройства в старт10 стопном режиме считывани .The purpose of the invention is to increase the reliability of the device in the start of 10 stop reading mode.

Указанна цель достигаетс тем, что в него введены элемент И и формирователь , вход которого соединен This goal is achieved by introducing an AND element and a driver, the input of which is connected to it.

15 с выходом усилител синхроимпульсов, а выход - с первым входом дополнительного элемента И, второй вход которого соединен с инверсным выходом триггера, а выход дополнительного 15 with the output of the sync pulse amplifier, and the output with the first input of the additional element I, the second input of which is connected to the inverse output of the trigger, and the output of the additional

Claims

30 of the AND element is connected to the counting input of the trigger and the second inputs of the AND elements, the output of the OR element is connected to the input of the O setting of the trigger. 39 The drawing shows a functional diagram of the proposed device for reading information from a perforation tape. The device contains photodetectors 1, amplifiers 2 information signals, photodetector 3 sync track signals, amplifier C sync signals, driver 5, additional element AND 6, elements AND 7, element OR 8 and trigger 9. The device operates as follows. When passing through the information and synchronization holes of the punched tape in the reading position, first the information amplifiers 2 and the amplifier k of the sync signals are in the locked state, and the trigger 9 is under the zeroing potential from the output of the element 8. After the photo detectors 1 receive the front edge of the hole Information punching the zero signal from trigger 9 is removed. After the photodetector 3 perceives the front edge of the synchronization hole, the driver sends it through the clock amplifier, the shaper 5 is fed to the input of an additional logic element, And b, since a second level is fed to the second input from the inverse output of the trigger 9, the signal recording unit in the trigger 9 and allowing the passage of information to the output of the elements And 7 from the outputs of the amplifiers 2 With the inverse output of the trigger 9 to the input of the additional element And 6 after writing to the trigger 9 one gical level locking is provided which prohibits the formation of the element to the outlet 6 and the signal in the case of re-generating photodetector 1 clock signal. After passing by the photodetectors 1 of the rear edge of all the holes, the element OR 8 is again generated by the zero signal of the trigger 3, which tilts it to its original state. Further, when advancing a punched tape, the cycle of operation of the device is repeated. In the start-stop mode of the input, the tape can move in the readout position and the moments of switching between the Motion – Stop and Stop – Motion modes due to the fact that the brake fixing the tape in the Stop mode still It did not work, and the 4th tape roll curler in the Motion mode had already stopped pulling it. In this case, under the action of the levers of the tape tensioning system, it could be shifted. However, this offset is usually not large, i.e. it does not exceed the radius of the information aperture (the radius of the information hole is larger than the radius of the synchro-hole), therefore, if the synchro-hole appears in the reading position, a sync-bounce signal appears perceived without bounce, and the trigger 9 will remain in the cocked state, prohibiting the passage of the sync track signal from the output of the driver 5. Thus, the proposed device makes it possible to eliminate the appearance of spurious pulses at the device output in the presence of chattering installation of a punched tape in the start-stop mode. The technical and economic effect of the implementation of the invention consists in increasing the reliability of reading information from a punched tape. The invention of a device for reading information from a punched tape, containing information photo detectors connected to amplifiers, the outputs of which are connected to the first inputs of the AND elements and the inputs of the OR element, a photo receiver of the sync track signals, connected to the sync amplifier, a trigger, characterized in that, in order to increase reliability of the device, an additional element I and a driver are introduced into it, the input of which is connected to the output of the clock pulse amplifier, and the output is connected to the first input of the additional element This is AND, the second input of which is connected to the inverse output of the trigger, and the output of the additional element AND is connected to the counting input of the trigger and the second inputs of the AND elements, the output of the OR element is connected to the input of the O trigger. Sources of information taken into account in the examination 1,. Author's certificate of the USSR ff 61993, cl. G 06 K, 1978.

2. Japanese Patent N 9-30302, cl. G 06 K 7/1, publ. 197 (prototype).