SU510793A1

SU510793A1 - Method for adaptive information transfer

Info

Publication number: SU510793A1
Application number: SU1846472A
Authority: SU
Inventors: Николай Михайлович Бондаренко; Владимир Ильич Пустоваров; Виктор Иванович Сапрыкин; Алексей Иванович Флеров
Priority date: 1972-11-13
Filing date: 1972-11-13
Publication date: 1976-04-15

Description

ращени сигнала путем вычитани из полученного отсчета предыдущего отсчета, записанного в регистре 5 предыдущего отсчета. С помощью схемы анализа 4 сравнивают абсолютную величину приращени , полученного в блоке вычитани 3, с величиной П фиксированного порога. Если абсолютна величина приращени сигнала оказываетс мешьше П, то на регистр блока считывани 6 по сигналу со схемы анализа 4 записывают код величины приращени сигнала с разр дностью /i logsH -j- 1. в противном случае, в регистр блока считывани 6 занос т признак полного отсчета разр дности /ь полный отсчет величины сигнала разр дности п и код величины приращени сигнала разр дности /2. Затем информацию из регистра блока считывани 6 передают в капал св зи 7, одновременно код величины сигнала записывают в регистр 5 предыдущего отсчета. При получении каждого нового цифрового отсчета повтор ют описанные операции.the signal is computed by subtracting from the obtained reference the previous reference recorded in register 5 of the previous reference. Using the analysis circuit 4, the absolute value of the increment obtained in subtractor 3 is compared with the value of P a fixed threshold. If the absolute value of the signal increment is found in a P, then the readout register 6 of the signal from analysis circuit 4 is written with the code of the magnitude of the signal increment with the size / i logsH -j- 1. Otherwise, the sign of the readout register 6 is entered readout of the size of the discharge / s is a complete readout of the magnitude of the signal of the size n and the code of the magnitude of the increment of the signal of the length of the discharge / 2. Then the information from the register of the readout unit 6 is transmitted to the drop of communication 7, at the same time the code of the signal magnitude is written into the register 5 of the previous count. Upon receipt of each new digital readout, the operations described are repeated.

Claims

Invention Formula

A method of adaptive information transmission with discretization, wherein for transmission

a single sample of the input signal is converted from analog to digital form, obtaining a signal magnitude code that is compared with a threshold, which is used as a previous discrete signal sample, obtaining a code for the signal increment value in one sampling period, and from the resulting codes form a code word for transmission to the communication channel, characterized by

that, in order to reduce the redundancy of the transmitted information without reducing the accuracy of the transmission, before forming the code word, the absolute value of the signal increment is determined, which is additionally compared with a fixed threshold value, and when the absolute value of the signal increment exceeds the threshold value, the code word for transmission is formed from a full reference sign code signal magnitude and

the code of the signal increment value, and with the absolute value of the signal increment smaller than a fixed threshold value, the code word for transmission is formed only from the code of the increment value.