IT1186008B - Digital data signal recovery system for telephone transmission - Google Patents

Digital data signal recovery system for telephone transmission

Info

Publication number
IT1186008B
IT1186008B IT22553/85A IT2255385A IT1186008B IT 1186008 B IT1186008 B IT 1186008B IT 22553/85 A IT22553/85 A IT 22553/85A IT 2255385 A IT2255385 A IT 2255385A IT 1186008 B IT1186008 B IT 1186008B
Authority
IT
Italy
Prior art keywords
signal
digital
level
digital data
input
Prior art date
Application number
IT22553/85A
Other languages
Italian (it)
Other versions
IT8522553A0 (en
Inventor
Robert H Beeman
Paul U Lind
Original Assignee
Gte Communication Syst
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 Gte Communication Syst filed Critical Gte Communication Syst
Publication of IT8522553A0 publication Critical patent/IT8522553A0/en
Application granted granted Critical
Publication of IT1186008B publication Critical patent/IT1186008B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/12—Compensating for variations in line impedance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0292—Arrangements specific to the receiver end
    • H04L25/0294—Provision for current-mode coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

The system for recovery of digital data from an input data flow allows the acceptable level of a signal to be determined. The signal is preceded by a leading synchronised pulse. A receiver accepts the input digital signal and provides an output for connection to other circuits. A signal level comparator operates after reception of the input signal following the sync. pulse, using a higher level then the reference level in order to produce a control signal. Amplitude logic (AL) counts the number of control signals emitted, and produces a digital signal concerning the number. A digital-to-analogue converter (DAC1) acts in response to the digital count to produce an analogue logic level which serves as the new reference level.
IT22553/85A 1984-10-25 1985-10-18 Digital data signal recovery system for telephone transmission IT1186008B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66462284A 1984-10-25 1984-10-25

Publications (2)

Publication Number Publication Date
IT8522553A0 IT8522553A0 (en) 1985-10-18
IT1186008B true IT1186008B (en) 1987-11-18

Family

ID=24666744

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22553/85A IT1186008B (en) 1984-10-25 1985-10-18 Digital data signal recovery system for telephone transmission

Country Status (2)

Country Link
BE (1) BE903512A (en)
IT (1) IT1186008B (en)

Also Published As

Publication number Publication date
BE903512A (en) 1986-02-17
IT8522553A0 (en) 1985-10-18

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