RO85705B1 - Data transmitter for differential phase modulation - Google Patents

Data transmitter for differential phase modulation

Info

Publication number
RO85705B1
RO85705B1 RO113443A RO11344384A RO85705B1 RO 85705 B1 RO85705 B1 RO 85705B1 RO 113443 A RO113443 A RO 113443A RO 11344384 A RO11344384 A RO 11344384A RO 85705 B1 RO85705 B1 RO 85705B1
Authority
RO
Romania
Prior art keywords
modulation
differential phase
phase modulation
data transmitter
transmitter
Prior art date
Application number
RO113443A
Other languages
Romanian (ro)
Inventor
Cornel-Eugen Sterian
Gheorghe Tucu
Original Assignee
Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Automatizari
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 Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Automatizari filed Critical Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Automatizari
Priority to RO113443A priority Critical patent/RO85705B1/en
Publication of RO85705B1 publication Critical patent/RO85705B1/en

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Inventia se refera la un transmitator de date pentru transmiterea datelor în banda vocala de frecventa pe canale telefonice prin aplicarea modulatiei diferentiale de faza. Transmitatorul de date pentru modulatia diferentiala de faza, conform inventiei, înlatura dezavantajele solutiilor cunoscute prin aceea ca realizeaza simultan functiile de modulare si de filtrare prin tehnici numerice, semnalul fiind sintetizat din esantioane precis determinate aplicate unui convertor dogitalanalogic, operatiile aritmetice fiind în cea mai mare parte preefectuate iar rezultatele acestora memorate în memorii semiconductoare din care sunt apelate la comanda datelor modulatoare.The invention relates to a data transmitter for transmitting data in the voice frequency band over the telephone channels by applying differential phase modulation. According to the invention, the phase difference modulation transmitter eliminates the disadvantages of the known solutions by simultaneously performing the modulation and filtering functions by numerical techniques, the signal being synthesized from precisely determined samples applied to a dogitalanalog converter, the arithmetic operations being the largest pre-performed parts and their results stored in semiconductor memories from which they are called to the modulating data command.

RO113443A 1984-01-28 1984-01-28 Data transmitter for differential phase modulation RO85705B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO113443A RO85705B1 (en) 1984-01-28 1984-01-28 Data transmitter for differential phase modulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO113443A RO85705B1 (en) 1984-01-28 1984-01-28 Data transmitter for differential phase modulation

Publications (1)

Publication Number Publication Date
RO85705B1 true RO85705B1 (en) 1985-01-30

Family

ID=40903543

Family Applications (1)

Application Number Title Priority Date Filing Date
RO113443A RO85705B1 (en) 1984-01-28 1984-01-28 Data transmitter for differential phase modulation

Country Status (1)

Country Link
RO (1) RO85705B1 (en)

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