GB973967A - Improvements relating to telegraph systems - Google Patents

Improvements relating to telegraph systems

Info

Publication number
GB973967A
GB973967A GB4315360A GB4315360A GB973967A GB 973967 A GB973967 A GB 973967A GB 4315360 A GB4315360 A GB 4315360A GB 4315360 A GB4315360 A GB 4315360A GB 973967 A GB973967 A GB 973967A
Authority
GB
United Kingdom
Prior art keywords
check signals
block
elements
check
signal
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
GB4315360A
Inventor
Esmond Philip Goodwin Wright
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 GB4315360A priority Critical patent/GB973967A/en
Priority to DEST17442A priority patent/DE1187665B/en
Priority to US153479A priority patent/US3144634A/en
Priority to CH1431961A priority patent/CH393413A/en
Priority to NL272560A priority patent/NL272560A/xx
Priority to BE611564A priority patent/BE611564A/en
Priority to FR882063A priority patent/FR1308217A/en
Priority to DEI21027A priority patent/DE1146912B/en
Priority to GB4104/62A priority patent/GB945916A/en
Priority to FR887106A priority patent/FR81093E/en
Priority to NL274576A priority patent/NL274576A/xx
Publication of GB973967A publication Critical patent/GB973967A/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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H04L1/0063—Single parity check

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

973,967. Telegraphy. STANDARD TELEPHONES & CABLES Ltd. Dec. 8, 1961 [Dec. 15, 1960], No. 43153/60. Heading H4P. A telegraph system includes at the transmitter, means for deriving a plurality of check signals from a block of signal elements, each check signal comprising a number of elements which are individually derived from different groups of signal elements in the block, the different check signals being derived in accordance with different mathematical laws, and at the receiver, means is provided for deriving corresponding check signals from the received block of signal elements and for comparing them with the transmitted check signals in order to detect errors. Specification 636,700 is referred to.
GB4315360A 1960-12-15 1960-12-15 Improvements relating to telegraph systems Expired GB973967A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
GB4315360A GB973967A (en) 1960-12-15 1960-12-15 Improvements relating to telegraph systems
DEST17442A DE1187665B (en) 1960-12-15 1961-02-08 Circuit arrangement for determining test points in a system for error-free transmission of binary coded data
US153479A US3144634A (en) 1960-12-15 1961-11-20 Telegraph systems
CH1431961A CH393413A (en) 1960-12-15 1961-12-11 Electric telegraph system
NL272560A NL272560A (en) 1960-12-15 1961-12-15
BE611564A BE611564A (en) 1960-12-15 1961-12-15 Improvements to data operating systems
FR882063A FR1308217A (en) 1960-12-15 1961-12-15 Improvements to data operating systems
DEI21027A DE1146912B (en) 1960-12-15 1961-12-15 Method for error detection of telegraphic messages transmitted in blocks
GB4104/62A GB945916A (en) 1960-12-15 1962-02-02 Data-transmission error-detecting arrangement
FR887106A FR81093E (en) 1960-12-15 1962-02-06 Improvements to data operating systems
NL274576A NL274576A (en) 1960-12-15 1962-02-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4315360A GB973967A (en) 1960-12-15 1960-12-15 Improvements relating to telegraph systems

Publications (1)

Publication Number Publication Date
GB973967A true GB973967A (en) 1964-11-04

Family

ID=10427544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4315360A Expired GB973967A (en) 1960-12-15 1960-12-15 Improvements relating to telegraph systems

Country Status (2)

Country Link
BE (1) BE611564A (en)
GB (1) GB973967A (en)

Also Published As

Publication number Publication date
BE611564A (en) 1962-06-15

Similar Documents

Publication Publication Date Title
ES268034A1 (en) Repeater terminal for frequency division multiplex communication systems
GB1210846A (en) Improvements in or relating to data transmission systems
GB948519A (en) Improvements relating to arrangements for detecting signal transmission errors in telegraph and like systems
GB1086315A (en) Improvements in or relating to data transmission systems
GB910453A (en) Improvements in or relating to data transmission systems
ES409302A1 (en) Frame synchronization system
GB973967A (en) Improvements relating to telegraph systems
GB935777A (en) Telegraph system with protection against errors and correction of same
GB970655A (en) Self-checking pulse transmission systems
GB929336A (en) A.c. telegraph system using a limited frequency band
GB967643A (en) Improvements in or relating to digital message transmission systems
DK108284C (en) Color television systems with a transmitter and at least one receiver and of the type in which two picture signals are transmitted alternately on a single transmission channel, as well as transmitter and receiver for use in such a system.
ES336386A1 (en) Supervision system for multiple telecommunication systems by time division. (Machine-translation by Google Translate, not legally binding)
GB1157310A (en) Data Communication System
GB902206A (en) Improvements in or relating to communication systems
GB996277A (en) Two-way signalling system with error correction by repetition
GB945607A (en) Improvements in receiving apparatus with electronic selector and controller with storage system
GB932830A (en) Improvements in or relating to communication systems
GB970316A (en) Improvements in electrical signalling systems employing pulse transmission
GB993345A (en) Improvements to data transmission systems
GB862856A (en) Improvements in and relating to secondary radar systems
GB1385537A (en) Data transmission systems
GB968279A (en) Data transmission system
GB1115865A (en) Signalling system
JPS51113525A (en) Error detecting system of data transmission