JPS57194653A - Reproducing repeater - Google Patents

Reproducing repeater

Info

Publication number
JPS57194653A
JPS57194653A JP56081580A JP8158081A JPS57194653A JP S57194653 A JPS57194653 A JP S57194653A JP 56081580 A JP56081580 A JP 56081580A JP 8158081 A JP8158081 A JP 8158081A JP S57194653 A JPS57194653 A JP S57194653A
Authority
JP
Japan
Prior art keywords
timing
circuit
reproducing
elastic memory
outgoing line
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP56081580A
Other languages
Japanese (ja)
Other versions
JPH0225581B2 (en
Inventor
Toru Koyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56081580A priority Critical patent/JPS57194653A/en
Publication of JPS57194653A publication Critical patent/JPS57194653A/en
Publication of JPH0225581B2 publication Critical patent/JPH0225581B2/ja
Granted legal-status Critical Current

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
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/24—Relay circuits using discharge tubes or semiconductor devices
    • H04L25/242—Relay circuits using discharge tubes or semiconductor devices with retiming

Landscapes

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

Abstract

PURPOSE:To suppress cumulation of jitter caused by reproducing repeating to the minimum, by providing an elastic memory on a reproducing repeate, and making the timing of a signal of an incoming line synchronize with a timing signal in an outgoing line having jitter little. CONSTITUTION:A reproducing repeater 5 is formed by an equalizing circuit 20, a timing extracting circuit 22 and a transmitting circuit 24, in an outgoing line 3. In an incoming line 4, an elastic memory 27 is inserted into an output of an equivalent circuit 21, and to this elastic memory 27, write-in is executed by synchronizing with a timing signal extracted by a timing circuit 23, and read-out is executed by synchronizing with a timing signal extracted by the timing circuit 23 of the outgoing line 3.
JP56081580A 1981-05-27 1981-05-27 Reproducing repeater Granted JPS57194653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081580A JPS57194653A (en) 1981-05-27 1981-05-27 Reproducing repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081580A JPS57194653A (en) 1981-05-27 1981-05-27 Reproducing repeater

Publications (2)

Publication Number Publication Date
JPS57194653A true JPS57194653A (en) 1982-11-30
JPH0225581B2 JPH0225581B2 (en) 1990-06-04

Family

ID=13750245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081580A Granted JPS57194653A (en) 1981-05-27 1981-05-27 Reproducing repeater

Country Status (1)

Country Link
JP (1) JPS57194653A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666658A1 (en) * 1994-02-07 1995-08-09 Hitachi, Ltd. An optical regenerator and an optical transmission system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121463A (en) * 1973-03-20 1974-11-20
JPS5312241A (en) * 1976-07-21 1978-02-03 Nec Corp Buffer memory unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121463A (en) * 1973-03-20 1974-11-20
JPS5312241A (en) * 1976-07-21 1978-02-03 Nec Corp Buffer memory unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666658A1 (en) * 1994-02-07 1995-08-09 Hitachi, Ltd. An optical regenerator and an optical transmission system
US5576876A (en) * 1994-02-07 1996-11-19 Hitachi, Ltd. Optical regenerator and an optical transmission system
US5838475A (en) * 1994-02-07 1998-11-17 Hitachi, Ltd. Optical regenerator and an optical transmission system

Also Published As

Publication number Publication date
JPH0225581B2 (en) 1990-06-04

Similar Documents

Publication Publication Date Title
JPS5477013A (en) Transmission system for picture sound
JPS55109042A (en) Selective individual calling system
DE3475684D1 (en) Ring communications system
JPS5731247A (en) Multiplexing tramsmission system
JPS55110448A (en) Digital signal transmission system
ES489851A1 (en) Method of synchronizing a quadphase receiver and clock synchronization device for carrying out the method
JPS57194653A (en) Reproducing repeater
JPS55161447A (en) Data transmission system
JPS574636A (en) Composite exchange system
JPS54161816A (en) Time-division type information transmission device
JPS5550765A (en) Digital signal receiver
JPS573447A (en) Time division multidimension connecting device
JPS57106264A (en) System for data reproducing
JPS5739639A (en) Delay type phase correction system
JPS55147887A (en) Synchronism re-acquisition system
JPS5451340A (en) Data transmitter
JPS53115120A (en) Intra-office phase synchronous system
JPS57157660A (en) Signal transmission system
JPS5620362A (en) Error information system
JPS5760508A (en) Signal processor for pcm signal
KR890001847Y1 (en) Data collector circuit
JPS5689156A (en) Repeater for digital communication
FR2361780A1 (en) Multiple telephone line data transmission system - divides message to be transmitted into two parallel transmitted parts
JPS573479A (en) Synchronizing circuit
JPS56164686A (en) Character broadcast receiver