JPS54128204A - Block transmission system - Google Patents

Block transmission system

Info

Publication number
JPS54128204A
JPS54128204A JP3632678A JP3632678A JPS54128204A JP S54128204 A JPS54128204 A JP S54128204A JP 3632678 A JP3632678 A JP 3632678A JP 3632678 A JP3632678 A JP 3632678A JP S54128204 A JPS54128204 A JP S54128204A
Authority
JP
Japan
Prior art keywords
alpha1
block
occurrence rate
transmission
error occurrence
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
JP3632678A
Other languages
Japanese (ja)
Inventor
Noboru Uechi
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP3632678A priority Critical patent/JPS54128204A/en
Publication of JPS54128204A publication Critical patent/JPS54128204A/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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1635—Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages

Landscapes

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

Abstract

PURPOSE:To secure the optimum transmission efficiency at all times by giving the constant check to the error occurrence rate of the transmission line. CONSTITUTION:With transmission of block B1, reception confirmation signal ACK plus error signal ERROR1 to inform error occurrence rate alpha1 are sent back from the reception side. When rate alpha1 is small, block B2 corresponding from the beginning of digital information D through (n1 + 1) character - (n1 + n2) character is transmitted from the transmission side. In this case, if the error signal informing error occurrence rate alpha2 (>alpha1) is sent back from the reception side, block B2' (n2>n2') corresponding to character (n1 + 1) - (n2 + n2') which is shorter than B2 is transmitted from the transmission side. At the reception side, error occurrence rate alpha1' is sent back when block B2' is received correctly, and the fact that the value of alpha1' is small can be recognized. The above actions are given also to block B3 and B4.
JP3632678A 1978-03-29 1978-03-29 Block transmission system Pending JPS54128204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3632678A JPS54128204A (en) 1978-03-29 1978-03-29 Block transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3632678A JPS54128204A (en) 1978-03-29 1978-03-29 Block transmission system

Publications (1)

Publication Number Publication Date
JPS54128204A true JPS54128204A (en) 1979-10-04

Family

ID=12466708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3632678A Pending JPS54128204A (en) 1978-03-29 1978-03-29 Block transmission system

Country Status (1)

Country Link
JP (1) JPS54128204A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62104246A (en) * 1985-10-30 1987-05-14 Hitachi Ltd Document data transmission method
JPH0558807U (en) * 1992-10-22 1993-08-03 三菱自動車工業株式会社 Engine oil return structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62104246A (en) * 1985-10-30 1987-05-14 Hitachi Ltd Document data transmission method
JPH0558807U (en) * 1992-10-22 1993-08-03 三菱自動車工業株式会社 Engine oil return structure

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