US5301273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for managing address information utilized in message transmission and reception
Assignee: Toshiba Corp
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Filing: 1991-06-18
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Granted: 1994-04-05
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Expires: 2011-06-18
Abstract
Abstract In a bridge unit for connecting branch LANs through a trunk LAN, of address information registered in an address translation table, address information associated with a station not subjected to message transmission or reception for a predetermined period of time is recognized as address information to be deleted from the address translation table After this recognization, when a message is to be transmitted to a destination station represented by the station address included in the address information to be deleted, message transmission is performed by using the address information to be deleted When a response message is not received from the destination station, the address information to be deleted is deleted from the address translation table, and the message is retransmitted by broadcast.
Inventors
- 👤 Kuniyoshi Konishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
H; H04; H04L; H04L45/00; H04L45/74; H04L45/742; H04L12/00; H04L12/28; H04L12/46; H04L12/4604; H04L12/462; H04L12/4625; H04L2212/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
187 words
A network system comprising: at least one trunk network; a plurality of branch networks, each having at least one station; a plurality of trunk interfaces, each of the trunk interfaces being coupled to the trunk network; a plurality of branch interfaces, each of the branch interfaces being coupled to one of the branch networks; and a plurality of buses for coupling at least one of the trunk interfaces to at least one of the branch interfaces, and wherein each of the branch interfaces includes: a table for registering a plurality of address information; means for determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; means for transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station which is designated by the determined address information is a first message; and means for deleting the determined address information from the table and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 2
Dependent Claim
187 words
A network system comprising: at least one trunk network; a plurality of branch networks, each having at least one station; a plurality of trunk interfaces, each of the trunk interfaces being coupled to the trunk network; a plurality of branch interfaces, each of the branch interfaces being coupled to one of the branch networks; and a plurality of buses for coupling at least one of the trunk interfaces to at least one of the branch interfaces, and wherein each of the branch interfaces includes: a table for registering a plurality of address information; means for determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; means for transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station which is designated by the determined address information is a first message; and means for deleting the determined address information from the table and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 3
Dependent Claim
25 words
The system according to claim 1, wherein each of the trunk and branch interfaces further includes memory means for storing a message to be received.
Claim 4
Dependent Claim
52 words
The system according to claim 1, wherein the address information includes a first flag representing whether or not the address information is to be deleted from the table, and a second flag representing whether or not the first message is transmitted to a station which is designated by the determined address information.
Claim 5
Dependent Claim
48 words
The system according to claim 3, wherein when the first flag is set, the message is at least one of transmitted to a station which is designated by the determined address information and transmitted in a broadcast manner in accordance with a set/reset state of the second flag.
Claim 6
Independent Claim
112 words
A method for managing address information utilized in message transmission and reception, the method comprising the steps of: registering a plurality of address information; determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station which is designated by the determined address information is a first message; and deleting the determined address information from a table and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 7
Independent Claim
112 words
A method for managing address information utilized in message transmission and reception, the method comprising the steps of: registering a plurality of address information; determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station which is designated by the determined address information is a first message; and deleting the determined address information from a table and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 8
Dependent Claim
49 words
The method according to claim 5, wherein the address information includes a first flag representing whether or not the address information is to be deleted, and a second flag representing whether or not the first message is transmitted to a station which is designated by the determined address information.
Claim 9
Dependent Claim
48 words
The method according to claim 6, wherein when the first flag is set, the message is at least one of transmitted to a station which is designated by the determined address information and transmitted in a broadcast manner in accordance with a set/reset state of the second flag.
Claim 10
Dependent Claim
145 words
A network system comprising: at least one trunk network; a plurality of branch networks, each having at least one station; and a plurality of interface means for coupling the trunk network to the branch networks, and wherein each of the interface means includes: register means for registering a plurality of address information; means for determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; means for transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station designated by the determined address information is a first message; and means for deleting the determined address information from the register means and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 11
Dependent Claim
145 words
A network system comprising: at least one trunk network; a plurality of branch networks, each having at least one station; and a plurality of interface means for coupling the trunk network to the branch networks, and wherein each of the interface means includes: register means for registering a plurality of address information; means for determining address information which designates a station in which at least one of no message transmission and no message reception is executed during a predetermined period; means for transmitting a message to the station which is designated by the determined address information when the message to be transmitted to the station designated by the determined address information is a first message; and means for deleting the determined address information from the register means and transmitting the message in a broadcast manner when no response message to the first message is received.
Claim 12
Dependent Claim
22 words
The system according to claim 8, wherein each of the interfaces further includes memory means for storing a message to be received.
Claim 13
Dependent Claim
53 words
The system according to claim 8, wherein the address information includes a first flag representing whether or not the address information is to be deleted from the register means, and a second flag representing whether or not the first message is transmitted to a station which is designated by the determined address information.
Claim 14
Dependent Claim
48 words
The system according to claim 10, wherein when the first flag is set, the message is at least one of transmitted to a station which is designated by the determined address information and transmitted in a broadcast manner in accordance with a set/reset state of the second flag.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |