GB1358849A - Data transmission - Google Patents

Data transmission

Info

Publication number
GB1358849A
GB1358849A GB4089870A GB4089870A GB1358849A GB 1358849 A GB1358849 A GB 1358849A GB 4089870 A GB4089870 A GB 4089870A GB 4089870 A GB4089870 A GB 4089870A GB 1358849 A GB1358849 A GB 1358849A
Authority
GB
United Kingdom
Prior art keywords
bit
signals
signal
aug
read out
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
GB4089870A
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB4089870A priority Critical patent/GB1358849A/en
Publication of GB1358849A publication Critical patent/GB1358849A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Abstract

1358849 Selective signalling; detecting passage of vehicles PLESSEY CO Ltd 6 Aug 1971 [25 Aug 1970] 40898/70 Headings G4H and G4L To facilitate the location of a digital identity signal in a repetitive transmission of that signal, one of two predetermined signals alternately separate adjacent identity signals. A five-bit binary signal is repeatedly sent from say a car to a central tariff control, or a railway waggon to a marshalling control. Adjacent signals are separated alternately by a 1 or a 0 bit. At the receiver (Fig. 2) the data stream enters a 7-bit register and detection by comparator 13 of the simultaneous presence in register positions 1 and 7 of a 1 and 0, or 0 and 1, operates decoder 15 to read out bit positions 2- 6, or alternatively or additionally operate gate 16 to read out the next 5 bits.
GB4089870A 1971-08-06 1971-08-06 Data transmission Expired GB1358849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4089870A GB1358849A (en) 1971-08-06 1971-08-06 Data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4089870A GB1358849A (en) 1971-08-06 1971-08-06 Data transmission

Publications (1)

Publication Number Publication Date
GB1358849A true GB1358849A (en) 1974-07-03

Family

ID=10417169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4089870A Expired GB1358849A (en) 1971-08-06 1971-08-06 Data transmission

Country Status (1)

Country Link
GB (1) GB1358849A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211995A1 (en) * 1985-08-28 1987-03-04 International Business Machines Corporation Method and arrangement for detecting the presence of a training signal in a modem receiver
US4782484A (en) * 1986-04-18 1988-11-01 Bell Communications Research, Inc. Encoding and decoding signals for transmission over a multi-access medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211995A1 (en) * 1985-08-28 1987-03-04 International Business Machines Corporation Method and arrangement for detecting the presence of a training signal in a modem receiver
US4782484A (en) * 1986-04-18 1988-11-01 Bell Communications Research, Inc. Encoding and decoding signals for transmission over a multi-access medium

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years