JPS554106A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS554106A
JPS554106A JP7628078A JP7628078A JPS554106A JP S554106 A JPS554106 A JP S554106A JP 7628078 A JP7628078 A JP 7628078A JP 7628078 A JP7628078 A JP 7628078A JP S554106 A JPS554106 A JP S554106A
Authority
JP
Japan
Prior art keywords
transmission
signal
importance
memory
circuit
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.)
Granted
Application number
JP7628078A
Other languages
Japanese (ja)
Other versions
JPS6036145B2 (en
Inventor
Kunihiko Sekiya
Yuzo Omiya
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53076280A priority Critical patent/JPS6036145B2/en
Publication of JPS554106A publication Critical patent/JPS554106A/en
Publication of JPS6036145B2 publication Critical patent/JPS6036145B2/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
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements

Landscapes

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

Abstract

PURPOSE:To shorten the transmission time of a facsimile, etc., by repeating transmission only when it is detected that frame information high in importance has a transmission error. CONSTITUTION:In transmission part 1, a signal obtained from picture signal generating circuit 11 is coded and stored in memory 12 in sequence. At this time, this coded signal is given a resending request discrimination code according to its importance. This signal in memory 12 is read out, on a unit of a fixed number of bits, to code generating adding circuit 13, where a block number and error detection code are added, and it is sent out by way of interface circuit 14 and transmission line 3. At the reception part, on the other hand, the input from interface circuit 21 is supplied to resending request discrimination circuit 23, where its importance is discriminated, and when it is high in importance and has an error detected, a resending refuest signal 24 is generated and sent back to transmission part 1. Then, this resending request is detected 15 and a siganl read out from memory 12 is sent again. In this way, the transmission signal can be shortened.
JP53076280A 1978-06-23 1978-06-23 Signal transmission method Expired JPS6036145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53076280A JPS6036145B2 (en) 1978-06-23 1978-06-23 Signal transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53076280A JPS6036145B2 (en) 1978-06-23 1978-06-23 Signal transmission method

Publications (2)

Publication Number Publication Date
JPS554106A true JPS554106A (en) 1980-01-12
JPS6036145B2 JPS6036145B2 (en) 1985-08-19

Family

ID=13600862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53076280A Expired JPS6036145B2 (en) 1978-06-23 1978-06-23 Signal transmission method

Country Status (1)

Country Link
JP (1) JPS6036145B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116362A (en) * 1980-02-20 1981-09-12 Ricoh Co Ltd Error retransmission system in facsimile data transmission
US7436454B2 (en) 1997-03-17 2008-10-14 Matsushita Electric Industrial Co., Ltd. Method and apparatus for transmitting encoded information based upon piority data in the encoded information

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116362A (en) * 1980-02-20 1981-09-12 Ricoh Co Ltd Error retransmission system in facsimile data transmission
JPS6332311B2 (en) * 1980-02-20 1988-06-29 Ricoh Kk
US7436454B2 (en) 1997-03-17 2008-10-14 Matsushita Electric Industrial Co., Ltd. Method and apparatus for transmitting encoded information based upon piority data in the encoded information

Also Published As

Publication number Publication date
JPS6036145B2 (en) 1985-08-19

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