JPS6464435A - Slot access control system - Google Patents

Slot access control system

Info

Publication number
JPS6464435A
JPS6464435A JP22012387A JP22012387A JPS6464435A JP S6464435 A JPS6464435 A JP S6464435A JP 22012387 A JP22012387 A JP 22012387A JP 22012387 A JP22012387 A JP 22012387A JP S6464435 A JPS6464435 A JP S6464435A
Authority
JP
Japan
Prior art keywords
slot
rate
control system
access control
bit
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
JP22012387A
Other languages
Japanese (ja)
Inventor
Yoshihiro Takiyasu
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 JP22012387A priority Critical patent/JPS6464435A/en
Publication of JPS6464435A publication Critical patent/JPS6464435A/en
Pending legal-status Critical Current

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  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To obtain a slot access control system to be suited for a network condition by providing a mode instructing bit to be re-written and controlled by a specified communication station in the plural communication stations to a communication frame. CONSTITUTION:A switching deciding part 601 of a control station, which is the specified communication station, changes an R bit (mode instructing bit) in a frame header FH according to instruction 606 from a control part 602. Namely, the using rate of a slot, which is successively informed by the control part 602, is averaged for a constant time in the switching deciding part 601. For example, when the average slot using rate is larger than 50%, it is set to be a successive system and when the rate is smaller than 50%, it is set to an arbitrary system. Thus, since an access mode is switched, the slot access control system can be obtained to be suited for the network condition of a traffic condition, an average transferring data length or a loop condition, etc.
JP22012387A 1987-09-04 1987-09-04 Slot access control system Pending JPS6464435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22012387A JPS6464435A (en) 1987-09-04 1987-09-04 Slot access control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22012387A JPS6464435A (en) 1987-09-04 1987-09-04 Slot access control system

Publications (1)

Publication Number Publication Date
JPS6464435A true JPS6464435A (en) 1989-03-10

Family

ID=16746273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22012387A Pending JPS6464435A (en) 1987-09-04 1987-09-04 Slot access control system

Country Status (1)

Country Link
JP (1) JPS6464435A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114330A (en) * 1989-09-28 1991-05-15 Hitachi Ltd Loop transmission system
DE112013004466B4 (en) 2012-09-13 2021-11-11 Mitsubishi Electric Corporation Area light source device and display device using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114330A (en) * 1989-09-28 1991-05-15 Hitachi Ltd Loop transmission system
DE112013004466B4 (en) 2012-09-13 2021-11-11 Mitsubishi Electric Corporation Area light source device and display device using the same

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