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JPS5787644A - Data relay device - Google Patents

Data relay device

Info

Publication number
JPS5787644A
JPS5787644A JP55163313A JP16331380A JPS5787644A JP S5787644 A JPS5787644 A JP S5787644A JP 55163313 A JP55163313 A JP 55163313A JP 16331380 A JP16331380 A JP 16331380A JP S5787644 A JPS5787644 A JP S5787644A
Authority
JP
Japan
Prior art keywords
synchronizing signal
data
modem
reception data
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
JP55163313A
Other languages
Japanese (ja)
Inventor
Shigeo Kobayashi
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 JP55163313A priority Critical patent/JPS5787644A/en
Publication of JPS5787644A publication Critical patent/JPS5787644A/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
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To prevent data error, by giving a function to correct the deviation between the bit speed of data received from a terminal station and that by a synchronizing signal in an MODEM, to a data relay device. CONSTITUTION:Under the condition that the frequency of an MODEM synchronizing signal is set slightly lower than the transmission speed of reception data from a terminal controller 1, the reception data is fetched to a bit buffer 48 serially in synchronizing with the synchronizing signal extracted up from the reception data from a terminal device 3, and the data in the bit buffer 48 is outputted to a line 404 in synchronizing with the MODEM synchronizing signal. The number of bits of the reception data synchronizing signal produced in one- bit interval of an MODEM synchronizing signal 403 is monitored at a phase comparison section 45, and if the reception data synchronizing signal is detected >=2 bits, the data input to the bit buffer 48 is temporarily stopped immediately after the reception of aport sequence from the terminal device 3 and the speed variation is corrected.
JP55163313A 1980-11-21 1980-11-21 Data relay device Pending JPS5787644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163313A JPS5787644A (en) 1980-11-21 1980-11-21 Data relay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163313A JPS5787644A (en) 1980-11-21 1980-11-21 Data relay device

Publications (1)

Publication Number Publication Date
JPS5787644A true JPS5787644A (en) 1982-06-01

Family

ID=15771453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163313A Pending JPS5787644A (en) 1980-11-21 1980-11-21 Data relay device

Country Status (1)

Country Link
JP (1) JPS5787644A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111327389A (en) * 2019-12-20 2020-06-23 中国人民解放军陆军工程大学 Real-time cooperative networking system and method for ultraviolet light communication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111327389A (en) * 2019-12-20 2020-06-23 中国人民解放军陆军工程大学 Real-time cooperative networking system and method for ultraviolet light communication

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