SU545079A1 - Delta telephone channel demodulator - Google Patents

Delta telephone channel demodulator

Info

Publication number
SU545079A1
SU545079A1 SU2131141A SU2131141A SU545079A1 SU 545079 A1 SU545079 A1 SU 545079A1 SU 2131141 A SU2131141 A SU 2131141A SU 2131141 A SU2131141 A SU 2131141A SU 545079 A1 SU545079 A1 SU 545079A1
Authority
SU
USSR - Soviet Union
Prior art keywords
delta
channel demodulator
telephone channel
signal
demodulator
Prior art date
Application number
SU2131141A
Other languages
Russian (ru)
Inventor
Михаил Дмитриевич Венедиктов
Юрий Петрович Женевский
Борис Шлемович Златкин
Сергей Артаваздович Мусаелян
Виктор Григорьевич Павлов
Original Assignee
Предприятие П/Я А-7956
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-7956 filed Critical Предприятие П/Я А-7956
Priority to SU2131141A priority Critical patent/SU545079A1/en
Application granted granted Critical
Publication of SU545079A1 publication Critical patent/SU545079A1/en

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Description

ноБремснпо на вход секционированного узла задержки и на один нз входов дешифратора комбинаций, на выходе которого формируетс  сигнал, отображающий наличие в двоичном дельта-модулированном сигнале характерных комбинаций символов. Этот сигнал постунает на расширитель имнульсов, который формиj )yeT сигнал коррекцнн, представл юший собой носледовательность нмнульсов длительностью , равной двум нериодам тактовой частоты . Сигнал коррекции унравл ет ключевым узлом , включенным между интегратором и одним из выходов секционированного узла задержки . В результате анироксимируюн1,ее нанр женне в течение двух тактов коррекции сохран етс  неизменным, тем самым выбросы абсолютной величнны искажений квантовани  уменьшаютс  на величину шага квантовани . Таким образом, данное устройство без усложненн  дельта-демодул тора на иередаюшей стороне нозвол ет уменьшить абсолютную велнчину искажений квантовани  и соответственно улучшить отношенне сигнал/Hiy.M квантовани  на выходе дельта-демодул тора, т. с. иа выходе телефониого канала.Bremnpo to the input of the partitioned delay node and one for the inputs of the decoder combinations, the output of which generates a signal indicating the presence in the binary delta-modulated signal characteristic character combinations. This signal is sent to the expander of pulses, which forms a yeT signal, which is a corrective signal, which is a sequence of nm pulses with a duration equal to two clock frequency neerodes. The correction signal is equalized by a key node connected between the integrator and one of the outputs of the partitioned delay node. As a result, it is aniroximized1, its duration during the two correction cycles remains unchanged, thus the emissions of the absolute magnitude of quantization distortions are reduced by the magnitude of the quantization step. Thus, this device without complicating the delta demodulator on the transmit side can reduce the absolute quantization distortion and, accordingly, improve the ratio of the quantization signal / Hiy.M at the output of the delta demodulator, t. and phone channel output.

Claims (2)

1. De Jager F. Delta modulation - a Method of PCM Transmission Using the Unit-Code Philips, Pescarch Reports, 1952, v. 7, № 6.1. De Jager F. Delta modulation - A Method for PCM Transmission Using the Unit-Code Philips, Pescarch Reports, 1952, v. 7, no. 6. 2. БОСЫЙ H. Д. Многоканальные системы иередачи информации, Кнев, Техника, 1971,2. Bare H.D. Multichannel Systems and Information Transmission, Knev, Technique, 1971, с. 106 (нрототии).with. 106 (nrototy). ))
SU2131141A 1975-04-28 1975-04-28 Delta telephone channel demodulator SU545079A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2131141A SU545079A1 (en) 1975-04-28 1975-04-28 Delta telephone channel demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2131141A SU545079A1 (en) 1975-04-28 1975-04-28 Delta telephone channel demodulator

Publications (1)

Publication Number Publication Date
SU545079A1 true SU545079A1 (en) 1977-01-30

Family

ID=20618447

Family Applications (1)

Application Number Title Priority Date Filing Date
SU2131141A SU545079A1 (en) 1975-04-28 1975-04-28 Delta telephone channel demodulator

Country Status (1)

Country Link
SU (1) SU545079A1 (en)

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