JPS5631237A - Information transmission system - Google Patents

Information transmission system

Info

Publication number
JPS5631237A
JPS5631237A JP10743079A JP10743079A JPS5631237A JP S5631237 A JPS5631237 A JP S5631237A JP 10743079 A JP10743079 A JP 10743079A JP 10743079 A JP10743079 A JP 10743079A JP S5631237 A JPS5631237 A JP S5631237A
Authority
JP
Japan
Prior art keywords
signal
transmitted
transmission
picture information
time
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.)
Pending
Application number
JP10743079A
Other languages
Japanese (ja)
Inventor
Masaaki Abe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10743079A priority Critical patent/JPS5631237A/en
Publication of JPS5631237A publication Critical patent/JPS5631237A/en
Pending 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
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—Buffer management
    • 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
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Abstract

PURPOSE:To perform retransmission without a complicated picture information memory circuit for the retransmission signal, by transmitting a dummy signal for a fixed time before transmission of the picture information signal after the training signal is transmitted from the transmitter side. CONSTITUTION:After transmission of training signal T, dummy signal D independent of picture information signal P is transmitted for fixed time t0 which is longer than time (t) obtained by adding the transfer time of signal T from the transmitter to the receiver and the transmission time of retransmission request signal R from the receiver to the transmitter, and after that, blocks of signal P are transmitted. Thus, since several blocks of signal P are not transmitted, it is unnecessary to retransmit signal P and it is sufficient if signals T and D are transmitted again even if a trouble occurs. Signal R does not come in transmission of signal D until signal P is transmitted following signal D.
JP10743079A 1979-08-22 1979-08-22 Information transmission system Pending JPS5631237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10743079A JPS5631237A (en) 1979-08-22 1979-08-22 Information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10743079A JPS5631237A (en) 1979-08-22 1979-08-22 Information transmission system

Publications (1)

Publication Number Publication Date
JPS5631237A true JPS5631237A (en) 1981-03-30

Family

ID=14458936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10743079A Pending JPS5631237A (en) 1979-08-22 1979-08-22 Information transmission system

Country Status (1)

Country Link
JP (1) JPS5631237A (en)

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