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 Title: |
US5555377:
System for selectively compressing data transferred in network in response to produced first output when network utilization exceeds first threshold and data length over limit
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Christensen, Kenneth J.; Apex, NC
Polge, Steven E.; Cary, NC
Walker, Anthony D.; 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: |
1996-09-10
/ 1993-12-20
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| Application Number: |
US1993000168613
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| IPC Code: |
Advanced:
H04L 12/56;
H04L 29/06;
Core:
more...
IPC-7:
G06F 13/00;
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| ECLA Code: |
H04L12/56D; H04L29/06; H04L29/06C5;
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| U.S. Class: |
Current:
709/247;
370/468;
370/470;
709/224;
709/235;
Original:
395/200.11;
370/085.13;
364/222.2;
364/284.4;
364/285.4;
364/DIG.1;
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| Field of Search: |
395/200,200.01,200.02,200.10,200.11,200.13,200.18,200.21
370/084,118,85.13,94.1,110.1,60.1,79,85.1,95.1
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| Priority Number: |
| 1993-12-20 |
US1993000168613 |
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| Abstract: |
A data communications system including a network and a number of data communication stations attached to the network wherein each of the stations includes a processor, a memory, a bus, and a communications adaptor for operatively connecting the processor and memory to the network, the communications adaptor including a means for monitoring network activity on a real time basis and enabling or disabling data compression when network activity exceeds a predetermined threshold.
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| Attorney, Agent or Firm: |
Cockburn, Joscelyn G. ;
Clark, George E. ;
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| Primary / Asst. Examiners: |
Lee, Thomas C.; Meky, Moustafa Mohamed
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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 2 known family members
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First Claim:
Show all 5 claims |
What is claimed is:
1. A data communications system for efficiently transferring data with variable length between two or more terminals in a network by selectively compressing the data, comprising:
- two or more terminals connected via a token ring transfer medium in a network;
- means in each terminal for monitoring network utilization by detecting the number of frames traveling over the network having a token busy during a predetermined time period, producing a first output when network utilization exceeds a first threshold and producing a second output when said network utilization is below a second threshold;
- means associated with each of said terminals for compressing data, to be transmitted from the first terminal to a second terminal on said network, in response to said first output of said monitoring means when said variable data length is over a selected limit;
- means for transmitting data from said first terminal to said second terminal on said network without compressing the data in response to said second output or the absence of said first output;
- means associated with each of said terminals for detecting compressed data received by said second terminal;
- means associated with each of said terminals for decompressing data, received by said second terminal, in response to an output of said detecting means; and
- means associated with each of said terminals for controlling said means for compressing and said means for decompressing such that said means for compressing and decompressing are operational only when the number of frames having a busy token, detected by said means for detecting, are above a predetermined number.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 23 U.S. patent(s) that reference this one
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