GB1397276A - Transmitting and receiving circuit for a teleprinter subscriber station - Google Patents

Transmitting and receiving circuit for a teleprinter subscriber station

Info

Publication number
GB1397276A
GB1397276A GB3361372A GB3361372A GB1397276A GB 1397276 A GB1397276 A GB 1397276A GB 3361372 A GB3361372 A GB 3361372A GB 3361372 A GB3361372 A GB 3361372A GB 1397276 A GB1397276 A GB 1397276A
Authority
GB
United Kingdom
Prior art keywords
relay
transmission
turns
remote station
station
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.)
Expired
Application number
GB3361372A
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.)
GERAETEWERK KARL MARX STADT IM
MESSGERAETWERK ZWOENITZ VEB
Original Assignee
GERAETEWERK KARL MARX STADT IM
MESSGERAETWERK ZWOENITZ VEB
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 GERAETEWERK KARL MARX STADT IM, MESSGERAETWERK ZWOENITZ VEB filed Critical GERAETEWERK KARL MARX STADT IM
Priority to GB3361372A priority Critical patent/GB1397276A/en
Publication of GB1397276A publication Critical patent/GB1397276A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • 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
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)

Abstract

1397276 Teleprinter circuits GERATEWERK KARL - MARX - STADT IM KOMBINAT VEB MESSGERATEWERK ZWONITZ VEB 18 July 1972 33613/72 Heading H4P A receiving relay 6 at a local teleprinter subscriber's station permits reception from a remote station only if it receives two signals which indicate respectively that the remote station is transmitting and the local one is not. A signal received at EL to indicate that the remote station is ready to receive, turns on T1 and T2 thereby connecting the receiving relay 6 to the lower battery terminal, and also turning on T4. T4 being on enables a transmission control relay 9 to be energized by closure of a transmission key 10, and to be subsequently held on by 9.1, and turned off when necessary by a "cancel" contact 11. Relay 9 has normally closed contacts 9.2 which normally short out a punched tape transmitter terminal 1 and a "duplex teleprinting magnet" 3, so that energization of relay 9 permits transmission from 1 to pass through a single current-double current converter 4 to transmission terminals SL. When a distant transmission is to be received, a low polarity is placed on SL and is applied through R8 to turn on T2 so that relay 6 can be energized (via T2) by the received signal. When a particular (high) signal from the remote station appears at EL (during transmission to that station) to stop transmission from 4 for fault or other reasons, T1 turns off and thereby turns off T4 to de-energize relay 9 and stop the transmission at 9.2, and also turns off T2 to de-energize relay 6.
GB3361372A 1972-07-18 1972-07-18 Transmitting and receiving circuit for a teleprinter subscriber station Expired GB1397276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3361372A GB1397276A (en) 1972-07-18 1972-07-18 Transmitting and receiving circuit for a teleprinter subscriber station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3361372A GB1397276A (en) 1972-07-18 1972-07-18 Transmitting and receiving circuit for a teleprinter subscriber station

Publications (1)

Publication Number Publication Date
GB1397276A true GB1397276A (en) 1975-06-11

Family

ID=10355192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3361372A Expired GB1397276A (en) 1972-07-18 1972-07-18 Transmitting and receiving circuit for a teleprinter subscriber station

Country Status (1)

Country Link
GB (1) GB1397276A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees