SU1571658A1 - Device for digital magnetic record - Google Patents

Abstract

The invention relates to the accumulation of information. The purpose of the invention is to reduce the recording error of multi-core information codes. The information code to be recorded is fed to the adder 1, which is affected by the static register 16. The output code of the adder 1 is fed to the decoder 4, acting directly and through the OR element on the OR OR NOT 5 element and on the AND-OR element 15. At the same time the OR element 17 is given a start recording signal, and the pulses from the pulse generator 8 are fed to a counter 7, acting through the decoder 14 on the AND-OR element 15 and the AND element 6. The pulses of the AND-OR element 15 are fed to the delay element 18, the static register 16, trigger 3 and trigger 9, acting h Through the amplifier 10 recording on the recording magnetic head 11. 1 Il.

Description

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The invention relates to the accumulation of information, namely, devices for digital magnetic recording.

The aim of the invention is to reduce the error of writing multiplex information codes.

The drawing shows the proposed device for digital magnetic recording.

The device contains an adder 1 connected by the first group of inputs.

input buses 2 information codes, connected by inputs of addition and reading, respectively, to the direct inverse outputs of the first trigger 3 and connected by outputs to the decoder 4 inputs, which are connected by outputs from ten to twenty-second bits to the first inputs of the element OR-HE 5 element 6 , counter 7, pulse generator 8, second trigger 9, write amplifier 10, a fake magnetic head 11, output bus 12 for reading the information code, and input bus 13 for starting the record. The element OR NOT 5 is connected to the output of the first input of the element AND the output of which is connected to the installation input of the unit of the first trigger 3. Counter 7 is connected by a counting input to the output of the generator 9 and 1 pulses. The output of the second trigger 9 Connected through the amplifier 10 recording Ј recording magnetic head 11

The device also contains an additional decoder 14 connected by inputs to the outputs of counter 7 and connected by a fourth discharge output to the second input of an AND 6 element, an AND-OR 15 element connected to the Zero Set Input of the first trigger 3, to the counting input of the second trigger 9 and to the output bus 12 reads the information code, the static register 16, the OR element 17 and the delay element 18. The static register 16 is connected to the outputs of the second group of inputs of the adder 1. Element OR 17 is connected to the first and second inputs respectively to the output of the tenth bit of the decoder 4 and to the input Bus 13 start recording and is connected to the output of the last input of the element OR NOT 5. the delay is connected by one output to the input of the setting of the zero of the counter 7. An additional decoder 14 is connected by the outputs from the second to twenty-second bits

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to the first inputs of the element AND-OR 15, which is connected by one of the second inputs to the output of the element OR 17. The decoder 4 is connected by outputs from the tenth to the twenty-second bit to the other second inputs of the element AND-OR 15 connected by the output to the input of the delay element 18 and with the zero setting input of the static register, which is connected by a synchronization input to another output of the delay element 18 and connected by information inputs to the outputs of the counter 7.

The device for digital magnetic recording works as follows.

The code of information to be recorded is fed through the input buses 2 of the information code to the first group of inputs of the adder 1, the second group of inputs of which is affected by a static register 16. The output code of the adder 1 is fed to the decoder 4, which acts directly and through the element OR 17 NOT 5 and to the element AND-OR 15. At the same time, the element OR 17 is given a start signal from the source of the information code through the input bus 13, and the signal from the generator of 8 pulses goes to counter 7, acting through an additional the encoder 14 on the element AND-OR 15 and on the element AND b. The pulses of the element AND-OR 15 are applied to the element 18 of the delay, on

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static register 16, on the output bus 12 read the information code, on the first trigger 3 and on the second trigger 9. The second trigger 9 acts through the write amplifier 10 on the write magnetic head 11,

The arrival of the recording start signal on the input bus 13 start recording allows the ninth pulse of the generator 8 to pass through the AND-OR element 15. After passing through two ninth pulses, the second trigger 9 forms an initial time interval equal to nine periods of the pulse generator 8 pulses , At this point, the nine-digit code is stored in the static register 16, the adder 1 is in the subtraction mode, and the counter 7 is in the zero state. The second of the ninth pulses is read

the code of the first character to be written from the source of information. From this code in adder 1, the code stored in the static register is subtracted .16. If the difference is less than the value of the code corresponding to the initial time interval, then the first trigger 3 is set by the fourth pulse of the generator 8 pulses in one state, and the adder 1 performs the summation of the input codes. The result of the summation of the codes is compared by means of the decoder 4, the additional decoder 14 and the element AND-OR 15 with the counter code 7. In this case, if the codes are equal, the element AND-OR 15 produces a pulse limiting the generated time interval. Subsequent characters are recorded from the source of information in a similar manner.

Claims (1)

Claims 25 A device for digital magnetic recording, containing an adder connected by a first group of inputs to input buses of an information code, connected by addition and subtraction inputs to the direct and inverse outputs of the first trigger, respectively, and connected by outputs to the inputs of a decoder connected by outputs from twenty-twenty to twenty-second bits to the first inputs of the OR-NOT element, the output of which is connected to the first input of the AND element connected by the output to the installation input of the unit of the first trigger, a counter connected by a counting input to pulse generator output, second trigger, output 0 five 0 five 0 five 0 which is connected via a recording amplifier with a recording magnetic head, an output bus for reading the information code and an input bus for writing, characterized in that, in order to reduce the write error of the multi-core information codes, an additional decoder is connected to it, connected by inputs to the outputs of the counter and connected by the fourth output A relay with the second input of the AND element, the AND-OR element connected by the output to the input of the zero setting of the first trigger, to the counting input of the second trigger, and to the output code reading bus information, a static register connected to the outputs of the second group of inputs of the adder, the OR element connected to the first and second inputs respectively to the output of the ninth digit of the decoder and to the input bus of the start of recording and connected to the output of the last input of the element OR NOT, element a delay connected by one output to the input of the zero meter installation, with the additional decoder-f tor connected by outputs from the ninth to twenty-second bits to the first inputs of the AND-OR element, which is connected by one of the second inputs to the output ele en-OR, and a decoder lodkkgg on outputs from the tenth to twenty-second bits to the other second inputs of the OR element connected by the output to the input of the delay element and to the installation input zero of the static register that is connected by the synchronization input to the other output of the delay element and connected information inputs with outputs. counter. Compiled by I.-V.Yu. Rosenkrantz Editor M.Tsitkina Techred M. Didyk Order 1516Discount 492Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Proofreader L. Patay