SU781904A1 - Device for reproducing official information - Google Patents

Description

The invention relates to block diagrams of devices for reproducing synchronization signals and can be used in information and measurement equipment for reproducing reference and code synchronization signals. A device for reproducing the service signals of a multichannel analog magnetograph, containing a tape mechanism, a magnetic reproduction head, is connected through an amplifier to (} sync pulses, the output of which is connected via logic circuits to the pulse distributor, and to the information pulse set, which is connected to the second the inputs of the circuits, the coincidence of the decoders of the beginning of the code word associated with the recorder informanvi J. Disadvantages of the device is low reliability and The closest is ycTpoJfcTso for reproducing overhead information, containing a magnetic head connected through an amplifier to the inputs of the code information selector and the sync pulse generator connected between their outputs and the counter input to determine the beginning of the code group, as well as the coincidence elements, the number of which is the number of characters in the code group, connected to the digital recorder via the corresponding triggers, the reset inputs of which are connected to the reset pulse shaper (.2 J. Not remnants of the known device is the complexity of the circuit and insufficient reliability, Pellew invention is to increase reliability of the device and simplification of its circuit. This goal is achieved by the fact that in the device for reproducing service information containing a magnetic head connected through an amplifier to the inputs of the code information selector and the sync pulse generator, the block for determining the beginning of the code group is included between the outputs and the counter input, and the coincidence elements whose number is equal to the number of characters in the code group, connected to the digital recorder via the corresponding triggers, the reset inputs of which are connected to the reset pulse shaper, the output of the village code information of a torus connected to the inputs of all elements otdelyshgmi comrade coincidence, the remaining inputs of which are connected to corresponding outputs of a counter.

The drawing shows a block diagram of the device,.

The device contains a magnetic penta tape drive mechanism 1, a magnetic head 2 connected via powerplug 3 to selector 4 and shaper 5 sync pulses, the output of which is connected through code 6 to begin the code group with counter 7, the outputs of which are matched, the first inputs of which are connected to the output of the selector, and the outputs are connected with the second inputs of the flip-flops 9, i the first inputs of which are connected through the shaper Yu reset the flip-flops of the flip-flops to the initial outputs with the counter outputs

and the outputs are connected to a digital recorder 11.

The device works as follows.

The synchronization and marking signals recorded on one track of the magnetic tape are reproduced by the magnetic head 2, amplified by the amplifier 3 and fed to the selector 4 and the driver 5. At the output of the selector 4, information signals are generated, and at the output of the former 5 the sync signals are generated.

The sync signals and information signals are sent to the block of determining the beginning of the code group, which determines the synchronous operation of the counter 7c. After the counter enters in synchronization with the act liiefi, the code signals that determine the signal of the incoming signals are detected at the outputs of the counter. The information in the reproducible information is determined using the coincidence elements 8. Each coincidence circuit 8 determines simultaneously its number of incoming clock signals and the presence of an information signal at the output of the selector 4. This is achieved by being on. the output of the coincidence circuit 8 will only be a signal when it is at the output of the selector 4. The signal at the output of the coincidence element 8 is stored by the trigger 9 and transmitted to the information recorder and from there to the consumer. After counting by the counter 7 of a predetermined number of sync pulses, the driver 1O generates a signal that triggers memory 9 to the initial state. .

In the device, the same match element is used to determine the signal number and the presence of the information signal. This simplifies the device layout, i.e. the number of logical elements and connections is reduced, which increases its reliability.

Claims (2)

Invention Formula A device for reproducing service information, comprising a magnetic head connected through an amplifier to the inputs of a code information selector and a sync generator, connected between the outputs of the counter and the input of the counter, the beginning of the code group, and also the elements of a match, the number of which is equal to the number of characters in the code group, connected to a digital recorder via corresponding triggers, the reset inputs of which are connected to a reset pulse shaper, characterized in that, in order to simplify the device to improve its reliability, the code information selector's input is connected to the individual inputs of the reset pulse generator and all elements of the Coincidence, the other inputs of which are connected to the corresponding outputs of the counter. Information sources. Taken into account in the examination of 1 .. USSR Author's Certificate N9576585, cl. OH 85 / 02.27.12.74. 2. USSR author's certificate No. 397905, kl.O 06 F 5 / 06,12.04.71 (prototype). - I F ff ten / L i L F / | j /  f f / - eleven