Patent US5577033A successfully refreshed from Google Patents.
US5577033A
Expired / Lapsed
US
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Local area network transmission emulator
Assignee: Hewlett Packard Development Co LP
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Filing: 1994-06-03
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Granted: 1996-11-19
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Expires: 2014-06-03
Abstract
Abstract A method and apparatus for using switched telecommunications services to emulate a local area network (LAN) medium. The method and apparatus convert a public switched network or an equivalent private network into a LAN cabling method for connecting distant devices using the same communications software as used in traditionally wired LANs.
Inventors
- 👤 Eugene Y. Chang
- 👤 David B. Richardson
- 👤 Bennett C. Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:34
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/02; H04L12/16; H04L12/18; H04L12/28; H04L12/1886; Y; Y10; Y10S; Y10S370/00; Y10S370/901; Y10S370/902; Y10S370/903; Y10S370/904
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
131 words
Apparatus for allowing communication between a source and a destination via a switched transmission media, comprising: an interface for receiving, from a protocol layer which is above a logical link control (LLC) layer and a media access control (MAC) layer, a datagram which is intended for receipt by the LLC or MAC layer and which has a source address identifying the source and a destination address identifying the destination; a classifier for retrieving from a storage location an address on the switched transmission media which corresponds to the destination address; a channel manager for using the switched transmission media address to initiate connection to a channel of the switched transmission media; and a dispatcher for providing the datagram to the channel of the switched transmission media for transmission to the destination.
Claim 2
Dependent Claim
131 words
Apparatus for allowing communication between a source and a destination via a switched transmission media, comprising: an interface for receiving, from a protocol layer which is above a logical link control (LLC) layer and a media access control (MAC) layer, a datagram which is intended for receipt by the LLC or MAC layer and which has a source address identifying the source and a destination address identifying the destination; a classifier for retrieving from a storage location an address on the switched transmission media which corresponds to the destination address; a channel manager for using the switched transmission media address to initiate connection to a channel of the switched transmission media; and a dispatcher for providing the datagram to the channel of the switched transmission media for transmission to the destination.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein the source and the destination are computer network devices capable of communication over a local area network.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 wherein the channel manager also monitors datagram traffic on the channel and disconnects and reconnects the channel based on the datagram traffic.
Claim 5
Dependent Claim
28 words
The apparatus of claim 1 wherein the storage location comprises a network definition table which includes one or more entries which identify devices on the switched transmission media.
Claim 6
Dependent Claim
16 words
The apparatus of claim 1 wherein the switched transmission media comprises a switched telecommunication network service.
Claim 7
Dependent Claim
17 words
The apparatus of claim 1 wherein the channel of the switched transmission media comprises a physical channel.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6 wherein the physical channel comprises one or more circuit or packet switched channels.
Claim 9
Dependent Claim
12 words
The apparatus of claim 1 wherein the datagram comprises a directed datagram.
Claim 10
Dependent Claim
12 words
The apparatus of claim 1 wherein the datagram comprises a multicast datagram.
Claim 11
Dependent Claim
12 words
The apparatus of claim 1 wherein the datagram comprises a broadcast datagram.
Claim 12
Independent Claim
119 words
A method for allowing communication between a source and a destination via a switched transmission media, comprising: receiving, from a protocol layer which is above a logical link control (LLC) layer and a media access control (MAC) layer, a datagram which is intended for receipt by the LLC or MAC layer and which has a source address identifying the source and a destination address identifying the destination; retrieving from a storage location an address on the switched transmission media which corresponds to the destination address; using the switched transmission media address to initiate connection to a channel of the switched transmission media; and providing the datagram to the channel of the switched transmission media for transmission to the destination.
Claim 13
Independent Claim
119 words
A method for allowing communication between a source and a destination via a switched transmission media, comprising: receiving, from a protocol layer which is above a logical link control (LLC) layer and a media access control (MAC) layer, a datagram which is intended for receipt by the LLC or MAC layer and which has a source address identifying the source and a destination address identifying the destination; retrieving from a storage location an address on the switched transmission media which corresponds to the destination address; using the switched transmission media address to initiate connection to a channel of the switched transmission media; and providing the datagram to the channel of the switched transmission media for transmission to the destination.
Claim 14
Dependent Claim
23 words
The method of claim 11 wherein the source and the destination are computer network devices capable of communication over a local area network.
Claim 15
Dependent Claim
27 words
The method of claim 11 further comprising the step of monitoring datagram traffic on the channel and disconnecting and reconnecting the channel based on the datagram traffic.
Claim 16
Dependent Claim
28 words
The method of claim 11 wherein the storage location comprises a network definition table which includes one or more entries which identify devices on the switched transmission media.
Claim 17
Dependent Claim
16 words
The method of claim 11 wherein the switched transmission media comprises a switched telecommunication network service.
Claim 18
Dependent Claim
17 words
The method of claim 11 wherein the channel of the switched transmission media comprises a physical channel.
Claim 19
Dependent Claim
18 words
The method of claim 16 wherein the physical channel comprises one or more circuit or packet switched channels.
Claim 20
Dependent Claim
12 words
The method of claim 11 wherein the datagram comprises a directed datagram.
Claim 21
Dependent Claim
12 words
The method of claim 11 wherein the datagram comprises a multicast datagram.
Claim 22
Dependent Claim
12 words
The method of claim 11 wherein the datagram comprises a broadcast datagram.
References Cited (Backward Citations)
US4868866A
Cited
US4787082A
Cited
US4818984A
Cited
EP0302646A2
Cited
US4926420A
Cited
US4930123A
Cited
US5093827A
Cited
US5280481A
Cited
US5323388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |