JPS553251A - Error control system - Google Patents

Error control system

Info

Publication number
JPS553251A
JPS553251A JP7570178A JP7570178A JPS553251A JP S553251 A JPS553251 A JP S553251A JP 7570178 A JP7570178 A JP 7570178A JP 7570178 A JP7570178 A JP 7570178A JP S553251 A JPS553251 A JP S553251A
Authority
JP
Japan
Prior art keywords
circuits
data
inversion
coincidence
parallel data
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
JP7570178A
Other languages
Japanese (ja)
Inventor
Fusao Hata
Kenji Nagai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7570178A priority Critical patent/JPS553251A/en
Publication of JPS553251A publication Critical patent/JPS553251A/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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • 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

Landscapes

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

Abstract

PURPOSE:To carry out the error control through the simple constitution of the circuit by performing the data transfer between units in parallel along with the inverted data, and thus to accelerate the error detection time and thus to increase the detecting capacity. CONSTITUTION:In case the data transfer is carried out between the CPU and input/ output control unit IOC, the following circuits are installed at interface parts IF1 and IF2: switch control circuits SWC1-SWC4 for the two-way data transfer; buffer circuits BF1-BF4; inversion control circuits IV1 and IV2; coincidence detection circuits CP1 and CP2, timing generation circuits TG1 and TG2; and gate circuits G1-G7. Thus the parallel data are transmitted in inversion and continuously after transmitting once the parallel data from the transmission side. At the same time, the comparison and collation is given at the reception side between the noninversion parallel data and the inversion parallel data. And when the coincidence is detected under the inverse relation, the correct reception data is processed; while the retransmission request is given to the transmission side in case no coincidence is obtained. With this retransmission request, the inverse transmission is carried out again at the transmission side.
JP7570178A 1978-06-22 1978-06-22 Error control system Pending JPS553251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7570178A JPS553251A (en) 1978-06-22 1978-06-22 Error control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7570178A JPS553251A (en) 1978-06-22 1978-06-22 Error control system

Publications (1)

Publication Number Publication Date
JPS553251A true JPS553251A (en) 1980-01-11

Family

ID=13583781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7570178A Pending JPS553251A (en) 1978-06-22 1978-06-22 Error control system

Country Status (1)

Country Link
JP (1) JPS553251A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58183581U (en) * 1982-05-31 1983-12-07 富士電機株式会社 vending machine case
JPS60227545A (en) * 1984-04-26 1985-11-12 Nippon Telegr & Teleph Corp <Ntt> Information transfer system
JPH04260537A (en) * 1990-10-17 1992-09-16 Francesco Canziani Sorting device and controlling method therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289402A (en) * 1976-01-21 1977-07-27 Hitachi Ltd Data transmitting device
JPS5295907A (en) * 1976-02-09 1977-08-12 Hitachi Ltd Data transmission device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289402A (en) * 1976-01-21 1977-07-27 Hitachi Ltd Data transmitting device
JPS5295907A (en) * 1976-02-09 1977-08-12 Hitachi Ltd Data transmission device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58183581U (en) * 1982-05-31 1983-12-07 富士電機株式会社 vending machine case
JPS639025Y2 (en) * 1982-05-31 1988-03-17
JPS60227545A (en) * 1984-04-26 1985-11-12 Nippon Telegr & Teleph Corp <Ntt> Information transfer system
JPH04260537A (en) * 1990-10-17 1992-09-16 Francesco Canziani Sorting device and controlling method therefor

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