US5287356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic termination of loop circulating messages
Assignee: Aviat Networks Inc
•
Filing: 1992-02-10
•
Granted: 1994-02-15
•
Expires: 2012-02-10
Abstract
Abstract A data transmission network includes circulating loops designed to increase the reliability of the network and its transmission speed. Redundant transmission within the circulating loops is sensed and terminated. This is accomplished by identifying those stations serving as an entrance port to a circulating loop within the network. When a transmission of information is received at that station, it is marked with that station's address. The information is sent into the network including into the circulating loop. As the circulating loop leads back to itself, that transmission is received at the same entrance station which transmitted it into the circulating loop. Upon receipt, the entrance station recognizes its own address and terminates any further transmission.
Inventors
- 👤 Mehr A. Parkhideh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:56
CPC Classifications
H; H04; H04L; H04L41/00; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/462
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
202 words
A method for terminating the transmission of a message sent in two directions along a first circulating loop, including a plurality of node stations comprising the steps of: a. transmitting a message packet to a first node station in said first circulating loop, from a second node station located outside said first circulating loop; b. receiving said message packet at said first node station; c. placing the identification of said first node station within said message packet; d. transmitting said message packet from said first node station to said plurality of node stations in said first circulating loop in a first direction around said first circulating loop and in a second direction around said first circulating loop opposite to said first direction. e. receiving said message packet, transmitted in said first direction at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; f. receiving said message packet transmitted in said second direction, at said first node station, detecting said identification of said first node station placed in said message packet and terminating the transmission in said second direction of said message packet.
Claim 2
Independent Claim
202 words
A method for terminating the transmission of a message sent in two directions along a first circulating loop, including a plurality of node stations comprising the steps of: a. transmitting a message packet to a first node station in said first circulating loop, from a second node station located outside said first circulating loop; b. receiving said message packet at said first node station; c. placing the identification of said first node station within said message packet; d. transmitting said message packet from said first node station to said plurality of node stations in said first circulating loop in a first direction around said first circulating loop and in a second direction around said first circulating loop opposite to said first direction. e. receiving said message packet, transmitted in said first direction at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; f. receiving said message packet transmitted in said second direction, at said first node station, detecting said identification of said first node station placed in said message packet and terminating the transmission in said second direction of said message packet.
Claim 3
Dependent Claim
51 words
The method of claim 1 including the steps of transmitting said message packet in said first and second directions to a third node station located within said first circulating loop and transmitting said message packet from said third node station to a fourth node station located outside said first circulating loop.
Claim 4
Dependent Claim
203 words
The method of claim 1 including the steps of transmitting said message packet in said first and second directions to a third node station located within said first circulating loop and transmitting said message packet from said third node station to a fourth node station located outside said first circulating loop and within a second circulating loop; and the steps of a. receiving said message packet at said fourth node station; b. placing the identification of said fourth node station within said message packet; c. transmitting said message packet from said fourth node station to said plurality of node stations in said second circulating loop in a first direction and in a second direction around said second circulating loop opposite to said first direction; d. receiving said message packet, transmitted in said first direction, at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; e. receiving said message packet, transmitted in said second direction, at said fourth station, detecting said identification of said fourth node station placed in said message packet, and terminating the transmission in said second direction of said message packet.
Claim 5
Dependent Claim
68 words
The method of claim 3 including the step of adding the identification of a destination node station to said message packet; said step of transmitting said message packet includes the step of transmitting said message packet to said destination node station; and the step of receiving said message packet at said destination node station, detecting said destination node station identification, and terminating the transmission of said message packet.
Claim 6
Dependent Claim
37 words
The method of claim 4 including the step of identifying node stations locations in said first and second circulating loops, connected to node stations outside said first and second circulating loops, as entrance or exit node stations.
Claim 7
Dependent Claim
44 words
The method of claim 5 including the step of marking a message packet transmitted from an exit node station located in said second circulating loop to a fifth node station located outside said second circulating loop, with the identity of said exit node station.
Claim 8
Dependent Claim
33 words
The method of claim 6 including the step of using said exit port location for retransmitting said message packet in a reverse direction from said fifth node station to said exit node station.
Claim 9
Dependent Claim
17 words
The method of claim 1 wherein said first and second directions are in clockwise and counterclockwise directions.
Claim 10
Dependent Claim
24 words
The method of claim 1 wherein said transmitting step in said first and second directions transmits said message packet in clockwise and counterclockwise directions.
Claim 11
Independent Claim
211 words
A system for terminating the transmission of a message sent in two directions along a first circulating loop, including a plurality of node stations comprising: a. means for transmitting a message packet to a first node station in said first circulating loop, from a second node station located outside said first circulating loop; b. means for receiving said message packet at said first node station; c. means for placing the identification of said first node station within said message packet; d. means for transmitting said message packet from said first node station to said plurality of node stations in said first circulating loop in a first direction around said first circulating loop and in a second direction around said first circulating loop opposite to said first direction. e. means for receiving said message packet, transmitted in said first direction at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; f. means for receiving said message packet transmitted in said second direction, at said first node station, detecting said identification of said first node station placed in said message packet and terminating the transmission in said second direction of said message packet.
Claim 12
Independent Claim
211 words
A system for terminating the transmission of a message sent in two directions along a first circulating loop, including a plurality of node stations comprising: a. means for transmitting a message packet to a first node station in said first circulating loop, from a second node station located outside said first circulating loop; b. means for receiving said message packet at said first node station; c. means for placing the identification of said first node station within said message packet; d. means for transmitting said message packet from said first node station to said plurality of node stations in said first circulating loop in a first direction around said first circulating loop and in a second direction around said first circulating loop opposite to said first direction. e. means for receiving said message packet, transmitted in said first direction at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; f. means for receiving said message packet transmitted in said second direction, at said first node station, detecting said identification of said first node station placed in said message packet and terminating the transmission in said second direction of said message packet.
Claim 13
Dependent Claim
50 words
The system of claim 10 including means for transmitting said message packet in said first and second directions to a third node station located within said first circulating loop and transmitting said message packet from said third node station to a fourth node station located outside said first circulating loop.
Claim 14
Dependent Claim
209 words
The system of claim 10 including means for transmitting said message packet in said first and second directions to a third node station located within said first circulating loop and transmitting said message packet from said third node station to a fourth node station located outside said first circulating loop and within a second circulating loop; and a. means for receiving said message packet at said fourth node station; b. means for placing the identification of said fourth node station within said message packet; c. means for transmitting said message packet from said fourth node station to said plurality of node stations in said second circulating loop in a first direction and in a second direction around said second circulating loop opposite to said first direction; d. means for receiving said message packet, transmitted in said first direction, at said first node station, detecting said identification of said first node station placed in said message packet, and terminating said transmission in said first direction of said message packet; e. means for receiving said message packet, transmitted in said second direction, at said fourth station, detecting said identification of said fourth node station placed in said message packet, and terminating the transmission in said second direction of said message packet.
Claim 15
Dependent Claim
65 words
The system of claim 12 including means for adding the identification of a destination node station to said message packet; said means for transmitting said message packet includes means for transmitting said message packet to said destination node station; and means for receiving said message packet at said destination node station, detecting said destination node station identification, and terminating the transmission of said message packet.
Claim 16
Dependent Claim
36 words
The system of claim 13 including means for identifying node stations locations in said first and second circulating loops, connected to node stations outside said first and second circulating loops, as entrance or exit node stations.
Claim 17
Dependent Claim
43 words
The system of claim 14 including means for marking a message packet transmitted from an exit node station located in said second circulating loop to a fifth node station located outside said second circulating loop, with the identity of said exit node station.
Claim 18
Dependent Claim
32 words
The system of claim 15 including means for using said exit port location for retransmitting said message packet in a reverse direction from said fifth node station to said exit node station.
Claim 19
Dependent Claim
17 words
The system of claim 15 wherein said first and second directions are in clockwise and counterclockwise directions.
References Cited (Backward Citations)
US4558428A
Cited
US4707832A
Cited
US4745593A
Cited
US4905233A
Cited
US4941142A
Cited
US5031174A
Cited
US4912656A
Cited
US5086428A
Cited
US5056085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |