JPS55154853A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS55154853A
JPS55154853A JP6156479A JP6156479A JPS55154853A JP S55154853 A JPS55154853 A JP S55154853A JP 6156479 A JP6156479 A JP 6156479A JP 6156479 A JP6156479 A JP 6156479A JP S55154853 A JPS55154853 A JP S55154853A
Authority
JP
Japan
Prior art keywords
circuit
sent
data
last signal
local address
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
JP6156479A
Other languages
Japanese (ja)
Inventor
Kenji Mizui
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 JP6156479A priority Critical patent/JPS55154853A/en
Publication of JPS55154853A publication Critical patent/JPS55154853A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
    • H04L5/24—Arrangements affording multiple use of the transmission path using time-division multiplexing with start-stop synchronous converters

Landscapes

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

Abstract

PURPOSE:To simplify data and hardware in constitution by adding data to be sent to a master station following transmitted data when there is no local address in a start-stop synchronization system. CONSTITUTION:When data sent from a master station to a subordinate station have no local address, decoder 17 detects a last signal without detecting a local address code. In this case, since FF28 is not reset, AND gate 29 stays open and the last signal is applied to transmitted data selecting circuit 22 via OR gate 27 and also to timer 18. Consequently, circuit 22 fetches data to be sent from the subordinate station to the master station via buffer 20 and sends them to character constituting circuit 23. Once a certain time needed for this fetch passes, a signal is sent from timer circuit 18 to circuit 22, and consequently, the last signal is sent from last signal generating circuit 21 to circuit 23.
JP6156479A 1979-05-21 1979-05-21 Data transmission system Pending JPS55154853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6156479A JPS55154853A (en) 1979-05-21 1979-05-21 Data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6156479A JPS55154853A (en) 1979-05-21 1979-05-21 Data transmission system

Publications (1)

Publication Number Publication Date
JPS55154853A true JPS55154853A (en) 1980-12-02

Family

ID=13174730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6156479A Pending JPS55154853A (en) 1979-05-21 1979-05-21 Data transmission system

Country Status (1)

Country Link
JP (1) JPS55154853A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148445A (en) * 1981-03-10 1982-09-13 Agency Of Ind Science & Technol Data transmission system
JPS59154839A (en) * 1983-02-23 1984-09-03 Sumitomo Electric Ind Ltd Transmission control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148445A (en) * 1981-03-10 1982-09-13 Agency Of Ind Science & Technol Data transmission system
JPS59154839A (en) * 1983-02-23 1984-09-03 Sumitomo Electric Ind Ltd Transmission control system

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