GB993509A - Improvements in or relating to electrical circuits - Google Patents

Improvements in or relating to electrical circuits

Info

Publication number
GB993509A
GB993509A GB3617163A GB3617163A GB993509A GB 993509 A GB993509 A GB 993509A GB 3617163 A GB3617163 A GB 3617163A GB 3617163 A GB3617163 A GB 3617163A GB 993509 A GB993509 A GB 993509A
Authority
GB
United Kingdom
Prior art keywords
messages
priority
waystation
central station
perforator
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
GB3617163A
Inventor
Geoffrey George Smith
David Charles Edwin Hanney
Hans Joachim Wollak
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB3617163A priority Critical patent/GB993509A/en
Priority to DE19641271153 priority patent/DE1271153B/en
Publication of GB993509A publication Critical patent/GB993509A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

993,509. Telegraphy. STANDARD TELEPHONES & CABLES Ltd. Sept. 13, 1963, No. 36171/63. Drawings to Specification. Heading H4P. [Also in Division G4] In a telegraph system in which a waystation is connected over a duplex line to a central station both stations comprise means for transmitting and receiving messages in 7-bit start-stop code and second means for transmitting an occasional message, relating to reservations for example, which has priority over normal messages. A priority message is preceded by a space nominally two characters long, and the station includes a testing arrangement for determining whether a long space signal is character 32, a valid priority signal or a fault (i.e. an excessively short or long space). Normal messages pass via a one-character shift register before passing to the printer or perforator but this store is disconnected when a priority signal arrives. At the waystation the normal messages come from an automatic transmitter and the priority messages from a separate keyset. At the central station these messages pass to a perforator and a computer, respectively. A teleprinter is provided at the waystation and an automatic transmitter at the central station. Specification 910,471 is referred to.
GB3617163A 1963-09-13 1963-09-13 Improvements in or relating to electrical circuits Expired GB993509A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3617163A GB993509A (en) 1963-09-13 1963-09-13 Improvements in or relating to electrical circuits
DE19641271153 DE1271153B (en) 1963-09-13 1964-09-12 Circuit arrangement for switching over an existing telex duplex connection between two stations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3617163A GB993509A (en) 1963-09-13 1963-09-13 Improvements in or relating to electrical circuits

Publications (1)

Publication Number Publication Date
GB993509A true GB993509A (en) 1965-05-26

Family

ID=10385633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3617163A Expired GB993509A (en) 1963-09-13 1963-09-13 Improvements in or relating to electrical circuits

Country Status (2)

Country Link
DE (1) DE1271153B (en)
GB (1) GB993509A (en)

Also Published As

Publication number Publication date
DE1271153B (en) 1968-06-27

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