GB967533A - Arrangement for the correct reception of binary-coded information items - Google Patents

Arrangement for the correct reception of binary-coded information items

Info

Publication number
GB967533A
GB967533A GB1258563A GB1258563A GB967533A GB 967533 A GB967533 A GB 967533A GB 1258563 A GB1258563 A GB 1258563A GB 1258563 A GB1258563 A GB 1258563A GB 967533 A GB967533 A GB 967533A
Authority
GB
United Kingdom
Prior art keywords
repetition
signal
amplitude
error
bit
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
GB1258563A
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
Publication of GB967533A publication Critical patent/GB967533A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

967,533. Telegraphy. STANDARD TELEPHONES & CABLES Ltd. March 29, 1963 [April 5, 1962], No. 12585/63. Drawings to Specification. Heading H4P. In a telegraph system in which errors are corrected by repetition of faulty signals, each bit of a received signal is fed to a device which determines whether or not the amplitude of the bit lies within one or other of two preset ranges, corresponding to mark and space bits. Repetition is requested if the amplitude lies outside the ranges, the repetition request signal itself being checked at the main station. The system described uses an error-detecting code, and errors detected by way of the code also cause repetition. The return channel normally carries a signal having positive polarity, which indicates that the receiver has detected no error. The signal is reversed in polarity when a repetition is to be started, the transmitter receiver including a device which checks the amplitude of the return signal. Repetition is initiated if the return signal is negative or outside a preset positive amplitude range.
GB1258563A 1962-04-05 1963-03-29 Arrangement for the correct reception of binary-coded information items Expired GB967533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST19060A DE1188331B (en) 1962-04-05 1962-04-05 Arrangement for error-free reception of binary encrypted transmitted information

Publications (1)

Publication Number Publication Date
GB967533A true GB967533A (en) 1964-08-26

Family

ID=7458081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1258563A Expired GB967533A (en) 1962-04-05 1963-03-29 Arrangement for the correct reception of binary-coded information items

Country Status (3)

Country Link
DE (1) DE1188331B (en)
GB (1) GB967533A (en)
SE (1) SE310895B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000941A1 (en) * 1992-06-30 1994-01-06 H. Heuer Instruments Pty. Ltd. Margin test apparatus for integrated services digital networks

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994000941A1 (en) * 1992-06-30 1994-01-06 H. Heuer Instruments Pty. Ltd. Margin test apparatus for integrated services digital networks
US5663968A (en) * 1992-06-30 1997-09-02 H. Heuer Instruments Pty Ltd. Margin test method and apparatus for intergrated services digital networks

Also Published As

Publication number Publication date
SE310895B (en) 1969-05-19
DE1188331B (en) 1965-03-04

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