SU913588A1 - Code-to-frequency difference converter - Google Patents

Description

The invention relates to computing and can be used to communicate a computer with external devices, control systems and modeling systems, measuring systems.

A linear transducer · code-pulse pulse is known, containing a clock pulse generator, a register, a logic circuit, an adder, a comparison circuit, a code-voltage transducer and a linear interpolator, the converted code through a register and logic circuits, the second inputs of which are connected to the output clock generator, is fed to an adder, the output of which through a code-voltage converter and a linear interpolator, the second input of which is connected to the output of the clock pulse generator, is connected to the first input c These are the comparisons, the second input of which is connected to the reference voltage, and the output. to the input of the clock generator and the control input of the adder [1].

However, this converter does not take into account the sign of the value being converted and its output value.

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not. presented in the form of two frequency streams.

The closest technical solution to the proposed is a frequency converter in the code> containing a pulse distributor, the first and second switches, the sum register, the first information register, the third switch, combination combiner, the output of the second switch through the second information register connected in series and the fourth switch connected to the fourth input combinational adder, the output of which is connected to the input of the sum register, the third and fourth outputs of the pulse distributor are connected to the control inputs of the third and fourth switches, the control inputs of the first and second synchronizers are connected to the fifth output of the pulse distributor,

_; the sixth output of which is connected to the control inputs of the third and fourth synchronizers, the outputs of the first and third synchronizers through the first element OR are connected to the first input of the combinational adder, to the second input of which through the second element OR are connected

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the outputs of the second and fourth synchronizers, the output of the write switch is connected to the control input of the first information register and the input of the character trigger, whose outputs are connected to the first inputs of the first 5 | AND second keys, the output of the overflow register of the sum register is connected via an inverter to the second input of the first key and directly to the second input of the second key [2]. YU

But in this converter its output value is not presented in the form of two frequency streams.

The aim of the invention is to enhance the functionality. 15

This goal is achieved by the fact that the code converter is a frequency difference containing a pulse distributor, the first output of which is connected to the control inputs · 2θ of the first and second switches, the outputs of which are connected to the inputs of the combinational adder, the output of which is connected to the input of the sum register, the output of which connected to the 25th input of the third switch, whose control input is connected to the second output of the pulse distributor, the output of the third switch is connected to the input of the first register, the output of which to Connected to the input of the second switch, the output of the second register is connected to the input of the first switch, the discharge output of the sum register overflow is connected via an inverter to the first input of the first key and directly to the first input of the second key, the forward and inverse outputs of the sign trigger are connected to the second inputs first and second keys 49

accordingly, four additional OR elements, four keys and a prohibition element are added to it, with the second output of the pulse distributor connected to the third inputs of the first 45 and second keys, the outputs of which through the first OR element are connected to the first input of the second OR element and to the input of the prohibition element, the third output of the plug-in pulse distributor to the second input of the second OR element, the output of which is connected to the first inputs of the first and second additional keys, to the second inputs of which are connected respectively inv rsny and direct access to $ 5

the sign trigger, the fourth output of the pulse distributor is connected to the input of the prohibition element, the output of which is connected to the first inputs of the third and fourth additional 60 keys, to the second inputs of which. inverse and direct outputs of the sign trigger, respectively, are connected, the outputs of the first and third additional keys are connected to the inputs of the third- 65

element OR, the outputs of the second and fourth additional keys are connected to the inputs of the fourth element OR.

The drawing shows a functional diagram of the Converter.

The code converter to the frequency difference contains a distributor of 1 pulses, registers 2 and 3, switches 4-6 ,. combinational adder 7, sum register 8, trigger 9 characters, inverter 10, prohibition element 11, keys 12-17, elements OR 18-21, input bus 22, output buses 23 and 24.

The Converter operates as follows.

The convertible binary code enters the converter via bus 22 and is written to register 2, and the sign bit to the trigger 9 characters. The pulse from the output of the distributor 1 pulses is fed to the control inputs of switches 5 and 6. The code from register 3 is fed to the input of combinational adder 7, where it is added to the converted code from register 2. The result is written to the register of sum 8. Then a pulse is sent to the control input of switch 4 , and the value of the register of sum 8 is rewritten into register 3. The value of the digit of the overflow of the register of sum 8 is given to keys 12 or 13, and depending on the state of the trigger 9 characters at the output of the element OR 19, an output pulse is formed. If the sign of the binary code is positive, then the key is triggered; 13, if the sign is negative, then the key is 12, The moment of appearance of the pulse at the output of the element OR 19 coincides in time with the pulses of the second output of the distributor 1 of pulses. Such cyclic summation is performed on the entire conversion interval. The frequency of appearance of pulses at the output of the element OR 19 is directly proportional to the size of the code being converted. To organize the dependence of the frequency on the code, the pulse distributor 1 generates two periodic series of pulses with equal frequencies. The pulses of the third output of the distributor 1 do not coincide in time with the pulses at the output of the element OR 19. As a result, the element OR 18 forms the sum of the indicated frequencies. The fourth-output pulses of the pulse distributor 1 are shifted relative to the third-output pulses in such a way that the prohibition element 11 generates the frequency difference between the pulses of the fourth output of the pulse distributor 1 and the pulses from the output of the OR element 19. The keys 14-17 and the OR elements 20 and 21 form two dependencies

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frequencies from the code are increasing and decreasing P ^. The frequency E) is removed from the output of the element OR 20, and the frequency P ^ from the output of the element OR 21.

Thus, the use of new elements in the converter: four keys, four elements OR, a prohibition element and their connection allows the conversion of the number represented in the additional binary code to two frequencies, the difference of which is directly proportional to the code being converted.

Claims (1)

Claim A code to frequency difference converter containing a pulse distributor, the first output of which is connected to the control inputs of the first and second switches, the outputs of which are connected to the inputs of a combinational adder, the output of which is connected to the input of the sum register, the output of the register of the sum is connected to the input of the third switch, whose control input connected to the second output of the pulse distributor, the output of the third switch is connected to the input of the first register, the output of which is connected to the input of the second switch, the output to orogo register connected to the input of the first switch, the sum of the register overflow discharge outlet is connected via an inverter to the first input of the first key and directly to the first input of the second switch, the forward and inverted outputs of the sign flip-flop are connected to first and second inputs the second keys, respectively, differing in the fact that, in order to expand the functionality, four OR elements, four keys and a prohibition element are additionally introduced into it, the second output of the pulse distributor is connected to the third inputs of the first and second keys, the outputs of which through the first OR element connected to the first inlet of the second OR element and to the input of the entree element, the third output of the distributor (pulses connected to the second input of the second OR element, the output of which is connected to the first inputs of the first and volt of additional keys, to the second inputs of which the inverse and direct outputs of the sign trigger are connected, the fourth output of the pulse distributor is connected to the input of the prohibition element, the output of which is connected to the first inputs of the third and fourth additional keys, to the second inputs of which are connected the direct and inverse outputs of the trigger the sign, the outputs of the first and third additional keys are connected to the inputs of the third element OR, the outputs of the second and fourth additional keys are connected to the inputs the fourth element OR.