SU636795A1

SU636795A1 - Method of converting pulse-phase code into voltage

Info

Publication number: SU636795A1
Application number: SU762352714A
Authority: SU
Inventors: Олег Александрович Малый
Original assignee: Предприятие П/Я Г-4466
Priority date: 1976-04-26
Filing date: 1976-04-26
Publication date: 1978-12-05

Description

II

Изобретение относитс к аналогоцифровой вычислительной технике, может быть использовано в устройствах дл преобразовани информации, представленной в цифровой фазоимпульсной форме, в аналоговую (в напр жение, амплитуда которого пропорциональна исходному числу).The invention relates to an analog-digital computer technology, can be used in devices for converting information presented in a digital phase-pulse form into analog (to a voltage whose amplitude is proportional to the original number).

Известен способ преобразовани кода в напр жение путем усреднени промежуточной последовательности импульсов , вл ющейс аналогом исходного кода. Промежуточную последовательность импульсов получают путем преобразовани кода в последовательность импульсов, число которых в течение посто нного интервала времени пропорционально коду l .There is a known method of converting a code into a voltage by averaging an intermediate pulse sequence, which is analogous to the source code. An intermediate pulse sequence is obtained by converting the code into a sequence of pulses, the number of which during a constant time interval is proportional to code l.

Недостаток указанного способа малое быстродействие, так как период промежуточной последовательности в а раз больше периода тактовой частоты (а - основание кода, П - число разр дов кода). Кроме того, этот способ может быть использован только дл преобразовани двоичного кода.The disadvantage of this method is low speed, since the period of the intermediate sequence is a times larger than the period of the clock frequency (a is the code base, P is the number of code bits). In addition, this method can only be used to convert binary code.

Наиболее близким к данному изобретению техническим решением вл етс способ, основанный на усреднении промежуточной последовательности им2The closest technical solution to this invention is a method based on averaging the intermediate sequence im2.

пульсов, полученной смешиванием разделенных во времени последовательностей импульсов, содержаашх информацию о весе и значении кода соответствующего разр да, включающий формирование и последовательное деление на основание кода частоты тактовой последовательности импульсов 2 .pulses obtained by mixing time-separated pulse sequences containing information on the weight and code value of the corresponding bit, including the generation and sequential division by the base of the code of the frequency of the clock sequence of pulses 2.

Недостатком известного способа вл етс узкоцелевое назначение - может быть использован только при преобразовании двоичного кода в напр жение.The disadvantage of this method is a narrow-purpose assignment — it can only be used when converting a binary code to a voltage.

Цель изобретени - расширение функционапьных возможностей способа.The purpose of the invention is to expand the functional capabilities of the method.

Claims

This goal is achieved by the fact that pulse sequences obtained by dividing the frequency of the clock sequence by the code base are used when generating pulse sequences containing information about the code value and the weight of the corresponding bit. The latter are formed by converting the phase-pulse (FI) code into the pulse width of pulse-width (SHI) sequences whose frequencies are proportional to the weight of the corresponding bit. At the same time, non-overlapping strobe pulses are formed. Then, the sequences are divided in time by gating them in addition to the formed 1M11 pulses, the length of which is one and the same (or multiple) to the period of the pulses of the lowest-order sequence. After that, the time-separated SI sequences are mixed, obtaining a single intermediate sequence of pulses containing information about the weight and code value of the corresponding bit, to which the second is then averaged. The average value of the intermediate sequence is analogous to the source code. This allows one to convert a phase-pulse code with any base (in particular, a decimal one) into a voltage. The drawing shows a structural electrical circuit of the device implementing the proposed method. The clock pulses produced by oscillator 1 are fed to series-connected frequency dividers and to clock input of register 5, which stores the conversion codes of FIs. The FI codes from the corresponding outputs of register 5 are sent to the first inputs of the FI conversion blocks of the code in the SI sequence, the second inputs of which receive pulses from the corresponding dividers 2–4. 2, the frequency of which is equal to the second input of block 7 pulses from divider 3, the frequency of which is equal to ±, and to the second input of block 8 that converts its lower bit of the number to pulses from divider 4 having a frequency -. From blocks 6-8 to one input of the elements And 9-11, the SI sequence and duration arrive. pulses of which are proportional to the code value of the corresponding bit, i.e. the digit and the frequency of the pulses is proportional to the weight of the bits, i.e. the values of || -, -fj-, -. Non-overlapping strobe pulses from the corresponding outputs of shaper 12 are sent to the other inputs of the AND 9-11 elements, and pulses are fed to the input of a frequency from the divide 4. corresponding bit These sequences are fed to the mixer 13, where they form a single intermediate sequence of pulses containing all the information about the value of the number being converted. From here, the pulses arrive at the averaging block 14, which allocates a constant component (average value) proportional to the initial phase-pulse code. The described method allows converting the phase-pulse code with any base (in particular, decimal) to a voltage. A method for converting a phase-pulse code to a voltage by averaging an intermediate pulse sequence obtained by mixing time-separated pulse sequences containing information about the weight and code value of the corresponding bit, including the generation and successive division by base of the clock frequency code of pulses differing in that, in order to extend the functionality, the phase-pulse code of the bit is transformed into a duration pulse width pulse sequences, whose frequencies are proportional to the weight of the corresponding bit, and divide the bits in time by gating the pulse width sequences by additionally formed non-overlapping strobe pulses, the duration of which is the same and equal to (or multiple) the pulse width of the pulse width sequence of the young bit Sources of information taken into account in the examination: 1. Klebansky R. B. Code to Voltage Converters, M., Energie, 1973, p. 34-36.

2. The patent of Great Britain 1154092, cl. G4, 04.06.69.