SU616262A1 - Information input device - Google Patents

Description

(54) DEVICE FOR INPUT OF INFORMATION

the multiplication kami and information frequencies associated with the playback unit.

The drawing applies a block diagram of the device.

The device consists of a playback unit 1, a 2 clock pulse driver, a trigger 3, delay elements 4 and 5, a first counter 6, a NOT element 7, a matching amplifier unit 8, a signal generation unit 9, a register 1O, a carrier frequency multiplication unit 11, a block 1.2 multiplying the information frequency, elements 13 and 14 And, the second counter 15, the adder 16.

The device works as follows.

On the magnetic dent of the playback unit 1, information is recorded using frequency modulation, and the carrier frequency is always recorded on the first channel, set by a highly stable crystal oscillator. The carrier frequency at the first output of the playback unit 1 is fed to the input of the generator 25 clock pulses 2, in which it is divided by P times and telegraphic pulses of positive polarity are formed at the output. Each pulse arrives at the input of the trigger 3 and sets it to the state J, as well as to the input of the delay element 4. The first output of the playback unit 1 is also connected to the input of the carrier frequency multiplying unit 11. In block 11, carrier frequency 35 is multiplied by K times and a sequence of telegraph pulses of positive polarity is generated at its output, which is fed to the first input of an Elemett I 13.40

Similarly, the second output of the playback unit 1 to the input of the multiplication unit 12 receives the information frequency, which is also multiplied by K times and from the output of the unit 12 the sequence of telegraphic pulses of Positive polarity goes to the first input of the And 14 element. with zero trigger output 3.

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Since the arrival of n: the first impulse

from the output of block 2, the trigger 3 is set to state I, then at the second inputs of elements 13 and 14 the inhibitory potential of the zero output of trigger 3 and pulses from blocks 11 and 12 through elements 13 and 14 do not pass. The first clock pulse through the delay element 4 is fed to the input of the delay element 5 and the first inputs of the register 10,

rewriting into it the contents of the adder 16.

The clock pulse from the output of the delay element 5 is fed through the element NOT 7 to the first input of the signal generation unit 9. The same pulse resets counters 6, 15 and trigger 3 to O. As soon as trigger 3 switches to state O, the enabling potential is applied to the second inputs of elements 13 and 14, and they start to pass 6 and 15 pulses to the input of counters. The outputs of the counters 6 and 15 are connected to the inputs of the adder 16 so that at the output of the adder 16 at the end of each clock cycle there is a difference in the number of pulses counted by the counters 6 and 15.

Thus, at the end of each clock cycle, at the output of the adder 16, a difference code is formed, which is then rewritten into the register 1O, the outputs of which are connected to the inputs of the block 8 of matching amplifiers. The outputs of which are connected to a computer. In the interval between the two clock pulses, trigger 3 is in the state O and the first potential is supplied to the first input of the signal generation unit 9, the same potential is applied to the Second input with the output of the negative element, therefore, the next counting potential is set at the output of the signal generation unit 9, which is fed to the input of a computer.

Thus, the next countdown is entered into the computer. In addition, the device allows to obtain frequency deviation without processing in a computer.

Formula inventions

An information input device comprising a playback unit connected to a clock pulse generator connected to a trigger and to a first delay element connected through a register with a block of matching amplifiers and through a second delay element with a NOT element to the first counter and trigger that is different The fact that, in order to expand the area of application of the device, a multiplier of the carrier frequency, a multiplier of the information frequency, two AND elements, a second counter, an adder and a signal generation unit, are inserted into it connected with the element NOT, a trigger, two AND elements connected respectively to two counters connected via an adder with a register, and multiplication blocks of the sounds and information frequencies connected to the playback unit.

Sources of information taken into account in the examination:

1. USSR Author's Certificate No. 395830, (06 Р 3/04, 197.4.

2, USSR Author's Certificate No. 439799, q 06 P 3/05, 1974.

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