AU635787B2 - Priority process for shared communications bus - Google Patents
Priority process for shared communications busInfo
- Publication number
- AU635787B2 AU635787B2 AU65539/90A AU6553990A AU635787B2 AU 635787 B2 AU635787 B2 AU 635787B2 AU 65539/90 A AU65539/90 A AU 65539/90A AU 6553990 A AU6553990 A AU 6553990A AU 635787 B2 AU635787 B2 AU 635787B2
- Authority
- AU
- Australia
- Prior art keywords
- frame
- priority
- digital
- significance
- communications bus
- 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.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40143—Bus networks involving priority mechanisms
- H04L12/40163—Bus networks involving priority mechanisms by assigning priority to messages according to a message field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/407—Bus networks with decentralised control
- H04L12/413—Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Detergent Compositions (AREA)
- Confectionery (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Method of contention resolution upon the simultaneous generation, by several local digital interfaces (A, B, C, D, E) able to correspond with one another, of a digital frame (T) on a local bus (LAN). Each digital interface transmits a frame-header contention module which possesses a high-significance fixed part defining a fixed priority and a low-significance variable part. The binary number which corresponds to this variable priority is decremented by one unit after each failure after subsequent collision. By contrast, that of the master passes, after transmission of the frame of this master, to its lowest priority value (all 1). <IMAGE>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8914665A FR2654281A1 (en) | 1989-11-08 | 1989-11-08 | METHOD AND DEVICE FOR RESOLVING CONTENT FOR A TELEPHONE CENTER WITH A SMALL OR MEDIUM CAPACITY. |
FR8914665 | 1989-11-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU6553990A AU6553990A (en) | 1991-05-16 |
AU635787B2 true AU635787B2 (en) | 1993-04-01 |
Family
ID=9387211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU65539/90A Expired - Fee Related AU635787B2 (en) | 1989-11-08 | 1990-10-26 | Priority process for shared communications bus |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0431316B1 (en) |
AT (1) | ATE116083T1 (en) |
AU (1) | AU635787B2 (en) |
DE (1) | DE69015333T2 (en) |
ES (1) | ES2066935T3 (en) |
FR (1) | FR2654281A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2439127B (en) * | 2006-06-13 | 2009-02-18 | Siconnect Ltd | Communications apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4488218A (en) * | 1982-01-07 | 1984-12-11 | At&T Bell Laboratories | Dynamic priority queue occupancy scheme for access to a demand-shared bus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2570233B1 (en) * | 1984-09-12 | 1991-08-16 | France Etat | ASYNCHRONOUS DIGITAL NETWORK |
DE3736468A1 (en) * | 1987-10-28 | 1989-05-11 | Philips Patentverwaltung | Method for priority-controlled access and arrangement for carrying out the method |
-
1989
- 1989-11-08 FR FR8914665A patent/FR2654281A1/en active Pending
-
1990
- 1990-10-26 AU AU65539/90A patent/AU635787B2/en not_active Expired - Fee Related
- 1990-11-02 EP EP90121033A patent/EP0431316B1/en not_active Expired - Lifetime
- 1990-11-02 DE DE69015333T patent/DE69015333T2/en not_active Expired - Fee Related
- 1990-11-02 AT AT90121033T patent/ATE116083T1/en active
- 1990-11-02 ES ES90121033T patent/ES2066935T3/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4488218A (en) * | 1982-01-07 | 1984-12-11 | At&T Bell Laboratories | Dynamic priority queue occupancy scheme for access to a demand-shared bus |
Also Published As
Publication number | Publication date |
---|---|
EP0431316A1 (en) | 1991-06-12 |
EP0431316B1 (en) | 1994-12-21 |
FR2654281A1 (en) | 1991-05-10 |
DE69015333D1 (en) | 1995-02-02 |
ATE116083T1 (en) | 1995-01-15 |
ES2066935T3 (en) | 1995-03-16 |
AU6553990A (en) | 1991-05-16 |
DE69015333T2 (en) | 1995-05-18 |
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