JPS5694894A - Loop communication system - Google Patents

Loop communication system

Info

Publication number
JPS5694894A
JPS5694894A JP17367679A JP17367679A JPS5694894A JP S5694894 A JPS5694894 A JP S5694894A JP 17367679 A JP17367679 A JP 17367679A JP 17367679 A JP17367679 A JP 17367679A JP S5694894 A JPS5694894 A JP S5694894A
Authority
JP
Japan
Prior art keywords
loop
communication
loops
speed
time slot
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
JP17367679A
Other languages
Japanese (ja)
Inventor
Haruki Koretomo
Tetsuo Isayama
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 JP17367679A priority Critical patent/JPS5694894A/en
Publication of JPS5694894A publication Critical patent/JPS5694894A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/025—Time division multiplex systems, e.g. loop systems

Abstract

PURPOSE:To realize a direct connection between the master loop and the slabe loop in case the communication speed is different between them, by controlling the switching the switching means which connects the 1st and 2nd communication loops in accordance with the output of the time slot detecting means of a communication loop. CONSTITUTION:The master loop 20 is connected to plural number of slave loops 26 via the connecting part 25-1, and a loop communication is carried out in the different communication speeds. In this case, the specified time slot of the loop 20 is detected at the time slot identifying part 39. The 1st and 2nd switching parts 41 and 42 which connect the loops 20 and 26 are controlled by the output detected at the part 39. The clock of the master loop clock generating part 27 is put into the part 42, and the output speed converting part 44 is connected to convert the signal supplied from the loop 26 into the speed of the loop 20. At the same time, the input speed converting part 43 is connected to the part 41 to supply the clock of the 1st slave loop clock generating part 40 and then convert the signal from the loop 20 into the speed of the loop 26. In such way, a direct connection is possible among the loops having the different communication speeds.
JP17367679A 1979-12-27 1979-12-27 Loop communication system Pending JPS5694894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17367679A JPS5694894A (en) 1979-12-27 1979-12-27 Loop communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17367679A JPS5694894A (en) 1979-12-27 1979-12-27 Loop communication system

Publications (1)

Publication Number Publication Date
JPS5694894A true JPS5694894A (en) 1981-07-31

Family

ID=15965025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17367679A Pending JPS5694894A (en) 1979-12-27 1979-12-27 Loop communication system

Country Status (1)

Country Link
JP (1) JPS5694894A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170252A (en) * 1982-03-31 1983-10-06 Fujitsu Ltd Data transmission system
JPS6065643A (en) * 1983-09-20 1985-04-15 Nec Corp Exchange of two optical loops
JPH04192944A (en) * 1990-11-27 1992-07-13 Mitsubishi Electric Corp Network device with storage function
US7424227B2 (en) 1999-07-15 2008-09-09 Fujitsu Limited Optical repeater converting wavelength and bit rate between networks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170252A (en) * 1982-03-31 1983-10-06 Fujitsu Ltd Data transmission system
JPS6065643A (en) * 1983-09-20 1985-04-15 Nec Corp Exchange of two optical loops
JPH04192944A (en) * 1990-11-27 1992-07-13 Mitsubishi Electric Corp Network device with storage function
US7424227B2 (en) 1999-07-15 2008-09-09 Fujitsu Limited Optical repeater converting wavelength and bit rate between networks
US7522843B2 (en) 1999-07-15 2009-04-21 Fujitsu Limited Optical repeater converting wavelength and bit rate between networks

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