JPS5481734A - Aquiring system of right of usage for common bus - Google Patents

Aquiring system of right of usage for common bus

Info

Publication number
JPS5481734A
JPS5481734A JP15024277A JP15024277A JPS5481734A JP S5481734 A JPS5481734 A JP S5481734A JP 15024277 A JP15024277 A JP 15024277A JP 15024277 A JP15024277 A JP 15024277A JP S5481734 A JPS5481734 A JP S5481734A
Authority
JP
Japan
Prior art keywords
usage
loop
common bus
usage request
units
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
JP15024277A
Other languages
Japanese (ja)
Inventor
Kazuhiro Akuta
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15024277A priority Critical patent/JPS5481734A/en
Publication of JPS5481734A publication Critical patent/JPS5481734A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable to obtain the right of usage in good order, according to the usage request with a simple constitution, by obtaining the right of usage of common bus through stopping the oscillation of loop oscillated in a give period with the usage request of each control unit.
CONSTITUTION: The control units 11 ... 1n are commonly connected to the common bus 20, and the common memory 30 can be accessed from either of the units 11 ... 1n. Then, the circuit stopping the loop oscillation by holding the output level constant is inserted serially to the loop oscillated in a given period when the units 11 ... 1n make usage request, allowing the control unit stopping the loop oscillation with the usage request of itself to obtain the right of usage for the bus 20. Thus, the right of usage can be obtained in good order according to the usage request with a simple constitution.
COPYRIGHT: (C)1979,JPO&Japio
JP15024277A 1977-12-13 1977-12-13 Aquiring system of right of usage for common bus Pending JPS5481734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15024277A JPS5481734A (en) 1977-12-13 1977-12-13 Aquiring system of right of usage for common bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15024277A JPS5481734A (en) 1977-12-13 1977-12-13 Aquiring system of right of usage for common bus

Publications (1)

Publication Number Publication Date
JPS5481734A true JPS5481734A (en) 1979-06-29

Family

ID=15492661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15024277A Pending JPS5481734A (en) 1977-12-13 1977-12-13 Aquiring system of right of usage for common bus

Country Status (1)

Country Link
JP (1) JPS5481734A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015765A (en) * 1983-07-05 1985-01-26 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Access control system for common bus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6015765A (en) * 1983-07-05 1985-01-26 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Access control system for common bus
JPH0316659B2 (en) * 1983-07-05 1991-03-06 Intaanashonaru Bijinesu Mashiinzu Corp

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