SU1501274A1 - Code conversion device - Google Patents

Abstract

The invention relates to computing, can be used in information processing and transmission systems, and allows the formation of a pulse sequence containing two independent code sequences, which expands the field of use of the device. The device for converting codes contains shapers 1 and 3 pulses, blocks 2 and 6 of separating the falling edge of pulses, converters 4 and 5, positional code-resistance, and converters 7 and 8 of parallel four-digit code into decimal positional code. 1 ill., 1 tab.

Description

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The invention relates to computing technology and can be used in information processing and transmission systems.

The purpose of the invention is to expand the field of use of the device by ensuring the formation of two independent codes in one pulse sequence.

The drawing shows a block diagram of the device.

The device for converting codes contains the first pulse shaper 1, the first pulse edge rising unit 2, the second pulse shaper 3, the first and second transducers 4 and 5 positional code-resistance, the second pulse rising edge block 6, the first and second parallel converters 7 and 8 four-digit code in the Destiral position code.

The first 9 and second 10 inputs of the device, the first 11 and second 12 control outputs of the device, and the information output of the device 13 are also indicated in the drawing.

Converters 4 and 5 can be performed on a digital-to-analog converter of type K5 72 PL2. Converters 7 and 8 can be implemented on a decoder of type K155Iifl1, the outputs of which are connected to the elements NOT, for example, a chip of type K155ЛН 1.

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Device to convert

codes works as follows.

Conversion of a parallel four-bit code in converters 7 and 8 is carried out in accordance with columns 1 and 2 of the table, column 3 of which shows the corresponding resistance values generated by each converter 4 and 5.

The pulse duration (pause) is determined by the formula

t K (2-t-N) R-C,

where K is a constant coefficient determined by the response threshold for the voltage of drivers 1 and 3;

N is the decimal code value, C is the value of the time of the driver of the capacitor of 1 or 3 pulses.

2744

In the absence of a 1T1 input encoder (at the inputs,) and 10 zeros, the converter forms a pulse sequence of the meander type. Permanently the leading edge of each output pulse 1 about the pulse (the falling edge of the negative output pulse of the driver 3 pulses), divided in the block of the falling edge and entering the first control input of the converter 4, the code from the output of the converter 7 is recorded,

15 to converter 5 (via the second control input) and starting the driver 1 pulses.

With the falling edge of each negative output pulse of the pulse forming transducer 1, selected in the falling edge selection block 2, a code is written from the output of the converter 8 to the converter 5, the code advances through the converter

25 A and starting the imager 3 pulses.

Thus, at output 13, a pulse sequence is formed, in which each code from the first code sequence corresponds to a pulse of a certain duration, and to each code from the code sequence there is a pause, also a certain duration.

35

Claims (1)

Invention Formula 50 A device for converting codes, containing the first pulse shaper 40, the output of which is connected to the input of the first pulse edge selection unit, the output of which is connected to the trigger input of the second pulse shaper, about m - e5 Spoiled by the fact that ensuring the formation of two independent codes in one pulse sequence, the device is inserted into a device; a position code - resistance, a second block in the gap of the trailing edge of pulses, and rvy and second transducers parallel chetfeh- JJ bit code in ten tirazr projectile loader positioner code which outputs .Connect to the data inputs of like transducers positional code ny - resistance outputs ko51 second with information inputs. :) dio-iment pulse shapers, the first control input is nepBoi o. the transducer position code - the resistance is connected to the output of the second pulse edge unit, the output of the second pulse driver is connected to the BTopoi O input of the pulse edge front section and is the information output of the device, the output of the second pulse edge edge unit is connected to the first control input the first p1 of the transducer, the position code is the resistance, with the start input of the first form Pusher code - resistance, the first control input of which is connected to the input of the first block of the falling edge of the pulses, the inputs of the first and BTOpoi converters of the parallel four-bit code to the ten-digit positioning code are respectively the first and the second inputs of the device, the outputs of the first and second pulse edge selection units are respectively the first and second control outputs of the device. R is the resistance value of one resistor R - 2R of the K5721IA2 D / A converter matrix. Editor I. Segl Nick Compiled by B. Khodov Tehred M. Didyk Proofreader I. Muska Order A891 / 56 Circulation 884 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 1PP35, Moscow, Zh-35, Raushsk nab., 4 /) Subscription