SU545079A1 - Delta telephone channel demodulator - Google Patents
Delta telephone channel demodulatorInfo
- 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
Links
Landscapes
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
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)
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) |
-
1975
- 1975-04-28 SU SU2131141A patent/SU545079A1/en active
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