Patent US3638093A successfully refreshed from Google Patents.
US4969146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protocol for network having a plurality of intelligent cells
Assignee: Echelon Systems Corp
•
Filing: 1988-11-08
•
Granted: 1990-11-06
•
Expires: 2008-11-08
Abstract
Abstract A network for sensing, controlling and communicating information. The network comprises a plurality of cells including a first cell for sending a packet of information, a second cell for receiving the packet of information and a plurality of repeater cells for repeating the packet prior to its arrival at the second cell. A method is described including the steps of generating a random number and including the random number in the packet; performing a calculation by the repeater cells of fields including the random number to generate a first number; storing the first number; performing a calculation on subsequent packets received by the repeater cells to provide a second number; comparing the second number to the first number; and rebroadcasting the subsequently received packet if the second number is different than the first number.
Inventors
- 👤 William B. Twitty
- 👤 Wendell B. Sander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:45
CPC Classifications
G; G08; G08C; G08C15/00; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1337; H05; H05B; H05B47/00; H05B47/10; H05B47/155; Y; Y02; Y02B; Y02B20/00; Y02B20/40; Y02B70/00; Y02B70/30; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/242; Y04S20/246
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
In a network for sensing, controlling and communicating which network has a plurality of cells a method for communicating a packet from a first of said cells to a second of said cells where said packet is repeated by others of said cells before arriving at said second cell comprising the steps of: generating a random number with said first cell and including said random number in a field in said packet; performing a calculation by said others of said cells on predetermined fields in said packet which fields include said random number field to generate a first number: storing said first number by said others of said cells; performing said calculation on subsequent packets received by said others of said cells to provide a second number; comparing said second number to said first number; rebroadcasting said subsequently received packet if said second number is different than said first number.
Claim 2
Dependent Claim
150 words
In a network for sensing, controlling and communicating which network has a plurality of cells a method for communicating a packet from a first of said cells to a second of said cells where said packet is repeated by others of said cells before arriving at said second cell comprising the steps of: generating a random number with said first cell and including said random number in a field in said packet; performing a calculation by said others of said cells on predetermined fields in said packet which fields include said random number field to generate a first number: storing said first number by said others of said cells; performing said calculation on subsequent packets received by said others of said cells to provide a second number; comparing said second number to said first number; rebroadcasting said subsequently received packet if said second number is different than said first number.
Claim 3
Dependent Claim
18 words
The method defined by claim 1 wherein said storing step comprises storing said number in a circular list.
Claim 4
Dependent Claim
23 words
The method defined by claim 1 or 2 wherein said calculation performed by said cells comprises the computation of a cyclic redundancy code.
Claim 5
Dependent Claim
145 words
In a network for sensing, communicating and controlling having a plurality of cells each of said cells comprising: processing means for preparing packets and receiving packets, each of said packets having protocol fields including a source address field and a destination address field; said processing means for preparing and interpreting predetermined messages for carrying out at least one of said sensing, communicating and controlling, said messages being included in said packets; said processing means generating a random number of a predetermined length, said random number being included in one of said fields within said packet when said processing means prepares packets; said processing means operating upon the random number in received packets to determine if a packet has been previously received; interface means for interfacing between said processing means and said network for communicating packets to and from said network; whereby a cell is realized.
Claim 6
Dependent Claim
145 words
In a network for sensing, communicating and controlling having a plurality of cells each of said cells comprising: processing means for preparing packets and receiving packets, each of said packets having protocol fields including a source address field and a destination address field; said processing means for preparing and interpreting predetermined messages for carrying out at least one of said sensing, communicating and controlling, said messages being included in said packets; said processing means generating a random number of a predetermined length, said random number being included in one of said fields within said packet when said processing means prepares packets; said processing means operating upon the random number in received packets to determine if a packet has been previously received; interface means for interfacing between said processing means and said network for communicating packets to and from said network; whereby a cell is realized.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |