US5724356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Advanced bridge/router local area network modem node
Assignee: Multi Tech Systems Inc
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Filing: 1995-04-28
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Granted: 1998-03-03
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Expires: 2015-04-28
Abstract
Abstract An intelligent LAN modem node is used in a bridge system which provides transparent internetwork communications over a plurality of channels. The LAN modem node is protocol independent and has a packet load distribution system which shares packet traffic across the channels using optional user-defined channel preferences. The LAN modem nodes used in the bridge system provides compression for increasing bridge transmission speed. The bridge system provides a filtering system to control access over the bridge and restrict unnecessary bridge traffic. Additionally, the bridge system provides automatic redial in the event modem communications are lost.
Inventors
- 👤 Vidyasagaran Parameswaran Nair
- 👤 Damodar Bhat
- 👤 Hung S. Ngo
- 👤 Narasimhan Sundarraajan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:36
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06; H04L; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/4612
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A modem node, comprising: a controller for controlling data flow and processing within the modem node; a network interface, interconnecting the controller and a network, for interfacing the modem node to the network; and a modem, interconnecting the controller to a plurality of data links, the modem having a plurality of channels; the controller including a filter for filtering data received from the network to control access to the plurality of data links and the modem node programmable for performing data balancing on the plurality of data links.
Claim 2
Dependent Claim
88 words
A modem node, comprising: a controller for controlling data flow and processing within the modem node; a network interface, interconnecting the controller and a network, for interfacing the modem node to the network; and a modem, interconnecting the controller to a plurality of data links, the modem having a plurality of channels; the controller including a filter for filtering data received from the network to control access to the plurality of data links and the modem node programmable for performing data balancing on the plurality of data links.
Claim 3
Dependent Claim
26 words
The modem node of claim 1 wherein the controller further comprises a data compressor for compressing data before transmitting it to the plurality of data links.
Claim 4
Dependent Claim
24 words
The modem node of claim 1 wherein the controller further comprises a data decompressor for uncompressing data received from the plurality of data links.
Claim 5
Dependent Claim
25 words
The modem node of claim 1 wherein the controller further comprises a router for routing data transferred between the network and the plurality of links.
Claim 6
Dependent Claim
27 words
The modem node of claim 1 wherein the controller further comprises a redialing device to re-establish communications at least one link of the plurality of data links.
Claim 7
Independent Claim
73 words
A method for transmitting packetized data, comprising the steps of: preprogramming a filter in a first modem node having a first modem connected to a first network, the first modem node connected to a second modem at a second modem node via a plurality of channels; compressing packetized data transferred over the plurality of channels; and distributing packetized data originating at the first network over the plurality of channels according to the filter.
Claim 8
Independent Claim
73 words
A method for transmitting packetized data, comprising the steps of: preprogramming a filter in a first modem node having a first modem connected to a first network, the first modem node connected to a second modem at a second modem node via a plurality of channels; compressing packetized data transferred over the plurality of channels; and distributing packetized data originating at the first network over the plurality of channels according to the filter.
Claim 9
Dependent Claim
35 words
The method of claim 6 wherein the step of preprogramming comprises the steps of: designating a preferred channel for a first range of source addresses; and prohibiting transmission for a second range or source addresses.
Claim 10
Dependent Claim
35 words
The method of claim 6 wherein the step of preprogramming comprises the steps of: designating a preferred channel for a first range of destination addresses; and prohibiting transmission for a second range of destination addresses.
Claim 11
Dependent Claim
30 words
The method of claim 6 further comprising the steps of: dynamically constructing a local user table; and prohibiting transmission of packets destined for addresses found in the local user table.
Claim 12
Dependent Claim
76 words
A bridge system comprising: a first network comprising a first modem and a second modem; a second network comprising a third modem and a fourth modem; first channel means connecting the first modem to the third modem; second channel means connecting the second modem to the fourth modem; compression means for compressing data; uncompression means for uncompressing data; and filter means for load balancing and restricting access to the first channel means and second channel means.
Claim 13
Dependent Claim
76 words
A bridge system comprising: a first network comprising a first modem and a second modem; a second network comprising a third modem and a fourth modem; first channel means connecting the first modem to the third modem; second channel means connecting the second modem to the fourth modem; compression means for compressing data; uncompression means for uncompressing data; and filter means for load balancing and restricting access to the first channel means and second channel means.
Claim 14
Dependent Claim
22 words
The bridge system of claim 10 wherein the filter means comprises source filtering means for load balancing according to packet source address.
Claim 15
Dependent Claim
22 words
The bridge system of claim 10 wherein the filter means comprises destination filtering means for load balancing according to packet destination address.
Claim 16
Dependent Claim
24 words
The bridge system of claim 10 wherein the filter means comprises learn table filtering means for restricting native packet traffic to a local network.
References Cited (Backward Citations)
US4406004A
Cited
US4610022A
Cited
US4625081A
Cited
DE3409532A1
Cited
DE3504064A1
Cited
US4794595A
Cited
US4873715A
Cited
DE3630469A1
Cited
US4866704A
Cited
US4901312A
Cited
JPH0257748A
Cited
JPH02193489A
Cited
US4996707A
Cited
US5220560A
Cited
US5479407A
Cited
US5202899A
Cited
US5452289A
Cited
US5406557A
Cited
US5355365A
Cited
US5477547A
Cited
US5390239A
Cited
US5416776A
Cited
US5550816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-02 | 2001-09-01 | 2002-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-02 | 2005-09-01 | 2006-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-02 | 2009-09-01 | 2010-03-03 | $7700.00 | Window Closed / Lapsed |