JPS6444151A - Communication control system - Google Patents

Communication control system

Info

Publication number
JPS6444151A
JPS6444151A JP62201224A JP20122487A JPS6444151A JP S6444151 A JPS6444151 A JP S6444151A JP 62201224 A JP62201224 A JP 62201224A JP 20122487 A JP20122487 A JP 20122487A JP S6444151 A JPS6444151 A JP S6444151A
Authority
JP
Japan
Prior art keywords
communication controller
monopolization
communication
request signal
controller
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
JP62201224A
Other languages
Japanese (ja)
Inventor
Shotaro Tanaka
Hiroshi Sasanuma
Yukiko Ono
Masao Ikezaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62201224A priority Critical patent/JPS6444151A/en
Publication of JPS6444151A publication Critical patent/JPS6444151A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent disabled communication of other communication controller due to a fault of a communication controller by providing a means allowing other communication controller to release monopolization when a communication controller monopolies one communication line. CONSTITUTION:Let suppose that a communication controller 21 requests the monopolization of a communication line 1 and communicates a communication controller 22, the the communication controller 22 monitors the interval of a sent message and when the interval of message is larger than a prescribed time T or over, a monopoly acknowledge signal 6 is sent to the communication controller 21. When the monopolization still continues, the communication controller 21 returns a monopolization request signal 7 to the communication controller 22. On the other hand, when the communication controller 21 does not return the monopolization request signal 7 due to a fault or the like, the communication controller 22 release the monopolization of the communication controller 21 on the condition of unreceived monopolization request signal 7.
JP62201224A 1987-08-12 1987-08-12 Communication control system Pending JPS6444151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201224A JPS6444151A (en) 1987-08-12 1987-08-12 Communication control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201224A JPS6444151A (en) 1987-08-12 1987-08-12 Communication control system

Publications (1)

Publication Number Publication Date
JPS6444151A true JPS6444151A (en) 1989-02-16

Family

ID=16437393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201224A Pending JPS6444151A (en) 1987-08-12 1987-08-12 Communication control system

Country Status (1)

Country Link
JP (1) JPS6444151A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431873A (en) * 1977-08-17 1979-03-08 Hitachi Ltd Multiple controller
JPS593642U (en) * 1982-06-29 1984-01-11 ラツクス株式会社 Voltage supply circuit in frequency synthesizer receiver
JPS6215951A (en) * 1985-07-15 1987-01-24 Canon Inc Network system
JPS62136144A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Home bus line acquisition and supervising system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5431873A (en) * 1977-08-17 1979-03-08 Hitachi Ltd Multiple controller
JPS593642U (en) * 1982-06-29 1984-01-11 ラツクス株式会社 Voltage supply circuit in frequency synthesizer receiver
JPS6215951A (en) * 1985-07-15 1987-01-24 Canon Inc Network system
JPS62136144A (en) * 1985-12-10 1987-06-19 Matsushita Electric Ind Co Ltd Home bus line acquisition and supervising system

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