JPS5637746A - Communication control processing system - Google Patents

Communication control processing system

Info

Publication number
JPS5637746A
JPS5637746A JP11289879A JP11289879A JPS5637746A JP S5637746 A JPS5637746 A JP S5637746A JP 11289879 A JP11289879 A JP 11289879A JP 11289879 A JP11289879 A JP 11289879A JP S5637746 A JPS5637746 A JP S5637746A
Authority
JP
Japan
Prior art keywords
transmission
data
break pattern
command
reception
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
JP11289879A
Other languages
Japanese (ja)
Inventor
Kazufumi Ishikawa
Noboru Okazaki
Shuichi Yoshii
Kenzo Iioka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11289879A priority Critical patent/JPS5637746A/en
Publication of JPS5637746A publication Critical patent/JPS5637746A/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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1838—Buffer management for semi-reliable protocols, e.g. for less sensitive applications such as streaming video
    • 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

Abstract

PURPOSE:To enhance the efficiency of transmission, by giving an immediate report of the error to the transmission side (without waiting for the transmission/reception signal of the final character) in case the data error is detected at the reception side and then completing immediately the reception and transmission commands. CONSTITUTION:Error checking 3 is carried out successively for the received data at the device of the reception side. And when a data error is detected, the data error detection part 3 delivers the data reception stop command. Receiving this command, the communication control part 5 completes immediately the received command under execution and at the same time delivers the break pattern sending command. Thus the break pattern sending part 4 sends immediately the break pattern to the SD line. On the other hand, the data transmission 1 is started at the device of the reception side and based on the data sending start command given from the part 5. And at the same time, the detection 2 is given to the break pattern with every transmission of one character. The break pattern sent for a fixed time from the device of the reception side is detected 2, and the break pattern detection signal is sent to the part 5. And the part 5 completes immediately the transmitted command under execution and at the same time stops the data transmission 1.
JP11289879A 1979-09-05 1979-09-05 Communication control processing system Pending JPS5637746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11289879A JPS5637746A (en) 1979-09-05 1979-09-05 Communication control processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11289879A JPS5637746A (en) 1979-09-05 1979-09-05 Communication control processing system

Publications (1)

Publication Number Publication Date
JPS5637746A true JPS5637746A (en) 1981-04-11

Family

ID=14598255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11289879A Pending JPS5637746A (en) 1979-09-05 1979-09-05 Communication control processing system

Country Status (1)

Country Link
JP (1) JPS5637746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219151A (en) * 1986-03-20 1987-09-26 Fujitsu Ltd Decentralized system communication control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62219151A (en) * 1986-03-20 1987-09-26 Fujitsu Ltd Decentralized system communication control system

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