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 Title: |
US5349583:
Multi-channel token ring
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Christensen, Kenneth J.; Apex, NC
Noel, Jr., Francis E.; Durham, NC
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| Assignee: |
International Business Machines Corporation, Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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| Published / Filed: |
1994-09-20
/ 1991-08-16
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| Application Number: |
US1991000746677
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| IPC Code: |
Advanced:
G06F 13/368;
H04L 12/433;
H04L 12/46;
H04L 29/10;
H04Q 11/04;
Core:
H04L 12/427;
more...
IPC-7:
H04J 3/02;
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| ECLA Code: |
H04L12/433; H04L12/46R;
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| U.S. Class: |
Current:
370/434;
370/447;
370/452;
370/463;
Original:
370/085.5;
370/085.7;
370/085.12;
370/085.14;
370/085.15;
370/825.06;
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| Field of Search: |
370/85.9,88.5,85.12,85.14,85.15,85.7
340/825.06
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| Priority Number: |
| 1991-08-16 |
US1991000746677 |
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| Abstract: |
A system for utilizing a transmission media such as a token ring having multiple, independent channels operating in parallel. The invention provides optimal use of multi-channel bandwidth to a plurality of interconnected workstations, file servers, and other devices. The workstations and devices attach to the token ring via dedicated lobe rings connected to concentrators on the token ring. Each concentrator contains the processors, memory, and logic necessary to coordinate the transmission and receipt of data over the token ring among the interconnected workstations and devices. The multi-channel token ring provides increased bandwidth and reliability to an existing token ring without requiring modifications to existing physical devices, interfaces, or protocols.
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| Attorney, Agent or Firm: |
Timar, John J. ;
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| Primary / Asst. Examiners: |
Olms, Douglas W.; Blum, Russell W.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
DE FR GB
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| Family: |
Show 5 known family members
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First Claim:
Show all 9 claims |
What is desired to be protected by Letters patent is:
1. A communications system comprising:
- a transmission media having multiple channels;
- a plurality of access units, each interfacing with each of the individual channels of said transmission media;
- at least one device associated with each of said access units, each said device interfacing with its associated access unit to receive data from and send data to said transmission media; and
- means for sending data between said at least one device and its associated access unit, said sending means including a dedicated communications channel for each said at least one device and its associated access unit;
- wherein each said access unit determines which data, if any, being transmitted over the channels of said transmission media is intended for one of said device associated therewith, intercepts only the intended data, and sends the intercepted data to said associated device via said dedicated communications channel of said sending means, and
- wherein each said dedicated communications channel of said sending means comprises a lobe ring, each lobe ring providing communications between one of said access units and said at least one device associated with said one access unit, and wherein each of said access units includes:
- at least one first physical interface, each first interface interfacing with and corresponding to each lobe ring associated with the access unit;
- second physical interfaces, one corresponding to and interfacing with each channel of said transmission media with which
- means for controlling access to the first physical interfaces, receipt of data from and transmission of data to the channels of said transmission media and access to the second physical interfaces.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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