JPS5567820A - Optical bus control unit - Google Patents
Optical bus control unitInfo
- Publication number
- JPS5567820A JPS5567820A JP14023978A JP14023978A JPS5567820A JP S5567820 A JPS5567820 A JP S5567820A JP 14023978 A JP14023978 A JP 14023978A JP 14023978 A JP14023978 A JP 14023978A JP S5567820 A JPS5567820 A JP S5567820A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- bus
- exclusive right
- control
- 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
Links
Landscapes
- Optical Communication System (AREA)
Abstract
PURPOSE: To secure a simple and assured control for the exclusive right of the optical bus by switching the bus exclusive right control signal via the optical switch and then giving the bus exclusive right to one of the several terminal units which received the reception test.
CONSTITUTION: The CPU containing bus control module 2 is connected to input/ output control modules 3a, 3b and so on connected with terminal units 4a, 4b and so on via optical fiber cable 5. Here optical switch 15 of modules 3a, 3b... each is connected in series to optical signal sending circuit LS1 via control line 6b, and the optical signal path of switch 15 is switched by the data transmission request of units 4a, 4b and so on. Thus the optical signals emitted from circuit LS1 are detected, and the bus exclusive right is given one of units 4a, 4b and so on. As a result, a simple and assured control is ensured for the exclusive right of the optical bus.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14023978A JPS5567820A (en) | 1978-11-14 | 1978-11-14 | Optical bus control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14023978A JPS5567820A (en) | 1978-11-14 | 1978-11-14 | Optical bus control unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5567820A true JPS5567820A (en) | 1980-05-22 |
Family
ID=15264137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14023978A Pending JPS5567820A (en) | 1978-11-14 | 1978-11-14 | Optical bus control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5567820A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192601U (en) * | 1982-06-17 | 1983-12-21 | 日本電気株式会社 | optical communication line |
-
1978
- 1978-11-14 JP JP14023978A patent/JPS5567820A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58192601U (en) * | 1982-06-17 | 1983-12-21 | 日本電気株式会社 | optical communication line |
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