US4825435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiport repeater
Assignee: Enterasys Networks Inc
•
Filing: 1985-11-08
•
Granted: 1989-04-25
•
Expires: 2005-11-08
Abstract
Abstract A multiport repeater "Hub" for interconnecting a plurality of transceiver cables to a local area network transceiver port. The hub also has an external bus which can be employed for daisy chaining up to a total of eight Hubs as a single connection to the transceiver port.
Inventors
- 👤 Keith B. Amundsen
- 👤 Richard P. Evans
- 👤 Richard C. Friess
- 👤 Robert J. Sooza
- 👤 Barry C. Zink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/02; H04L12/12; H04L12/28; H04L12/44; Y; Y10; Y10S; Y10S370/00; Y10S370/908
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A method for transmitting a packet of information including a preamble and data throughout a local area network comprising a multiport repeater having a plurality of ports for respectively connecting an end of each of a plurality of coaxial cables to said repeater, a port for connecting a transceiver cable to said repeater, FIFO buffer means, and repeating means, comprising the steps of: (a) storing information received on one of said ports in said FIFO buffer means; (b) regenerating a preamble in response to storage of said received information and transmitting said regenerated preamble on all of said ports except for said one port; (c) detecting an end of said received preamble at the output of said buffer means and; (d) always replicating the information stored in said buffer on all of said ports except for said one port in response to completion of said regenerated preamble.
Claim 2
Independent Claim
147 words
A method for transmitting a packet of information including a preamble and data throughout a local area network comprising a multiport repeater having a plurality of ports for respectively connecting an end of each of a plurality of coaxial cables to said repeater, a port for connecting a transceiver cable to said repeater, FIFO buffer means, and repeating means, comprising the steps of: (a) storing information received on one of said ports in said FIFO buffer means; (b) regenerating a preamble in response to storage of said received information and transmitting said regenerated preamble on all of said ports except for said one port; (c) detecting an end of said received preamble at the output of said buffer means and; (d) always replicating the information stored in said buffer on all of said ports except for said one port in response to completion of said regenerated preamble.
Claim 3
Dependent Claim
37 words
The method as defined in claim 1, further comprising the step of delaying the output of the data in said buffer in response to detection of said end of preamble prior to completion of said regenerated preamble.
Claim 4
Independent Claim
90 words
A method for transmitting received data throughout a local area network comprising a multiport repeater having a plurality of ports for respectively connecting an end of each of a plurality of coaxial cables to said repeater, a port for connecting a transceiver cable to said repeater, FIFO buffer means, and repeating means, comprising the steps of: (a) storing data received on one of said ports in said FIFO buffer means; (b) always replicating the data stored in said buffer means on all of said ports except for said one port.
Claim 5
Independent Claim
90 words
A method for transmitting received data throughout a local area network comprising a multiport repeater having a plurality of ports for respectively connecting an end of each of a plurality of coaxial cables to said repeater, a port for connecting a transceiver cable to said repeater, FIFO buffer means, and repeating means, comprising the steps of: (a) storing data received on one of said ports in said FIFO buffer means; (b) always replicating the data stored in said buffer means on all of said ports except for said one port.
Claim 6
Dependent Claim
141 words
A local area network comprising first, second and third multiport repeaters, each multiport repeater having a repeater interconnect port, a plurality of local ports and repeating means for coupling all data received at one port of said repeater for transmission at all other ports of said repeater, first, second and third pluralities of signal connection means coupled to said pluralities of local ports of said first, second and third multiport repeaters respectively, first, second and third repeater interconnection means coupled to said repeater interconnect ports of said first, second and third multiport repeaters respectively, and a repeater interconnect bus means connected to each of said repeater interconnection means at different junctions therealong, whereby data transmitted by a device coupled to any one of said signal connection means is received by all other devices coupled to said pluralities of signal connection means.
Claim 7
Dependent Claim
141 words
A local area network comprising first, second and third multiport repeaters, each multiport repeater having a repeater interconnect port, a plurality of local ports and repeating means for coupling all data received at one port of said repeater for transmission at all other ports of said repeater, first, second and third pluralities of signal connection means coupled to said pluralities of local ports of said first, second and third multiport repeaters respectively, first, second and third repeater interconnection means coupled to said repeater interconnect ports of said first, second and third multiport repeaters respectively, and a repeater interconnect bus means connected to each of said repeater interconnection means at different junctions therealong, whereby data transmitted by a device coupled to any one of said signal connection means is received by all other devices coupled to said pluralities of signal connection means.
Claim 8
Dependent Claim
34 words
The local area network as defined in claim 4, wherein each of said multiport repeaters further comprises restoring means for restoring timing margins in said repeated data and regenerating means for regenerating a preamble.
Claim 9
Dependent Claim
44 words
The local area network as defined in claim 4, further comprising a transceiver and transceiver connection means, wherein said first multiport repeater further comprises a transceiver connection port, said transceiver being connected to said transceiver connection port by way of said transceiver connection means.
Claim 10
Dependent Claim
90 words
The local area network as defined in claim 4, wherein said restoring means comprises a first-in/first-out buffer means for storing said preamble and said data received at said one port, and means for detecting an end of said received preamble at an output of said buffer means, wherein in response to detection of an end of said received preamble at said buffer means output before completion of said regenerated preamble by said regenerating means, said buffer means delays the output of said received data until said regenerated preamble is completed.
Claim 11
Dependent Claim
198 words
A global local area network connected to a standard Ethernet coaxial cable by means of transceiver, said local area network comprising first, second and third multiport repeaters, each multiport repeater having a repeater interconnect port, a plurality of local ports and repeating means for coupling all data received at one port of said repeater for transmission at all other ports of said repeater, first, second and third pluralities of signal connection means coupled to said pluralities of local ports of said first, second and third multiport repeaters respectively, first, second and third repeater interconnection means coupled to said repeater interconnect ports of said first, second and third multiport repeaters respectively, and a repeater interconnect bus means connected to each of said repeater interconnection means at different junctions therealong, said first multiport repeater having a transceiver connection port connected to said transceiver by a transceiver connection means, whereby data transmitted by a device coupled to any one of said signal connection means is received by all other devices coupled to said pluralities of signal connection means, and wherein each of said signal connection means has higher signal attenuation and lower resistance to interference than said standard Ethernet coaxial cable.
Claim 12
Dependent Claim
198 words
A global local area network connected to a standard Ethernet coaxial cable by means of transceiver, said local area network comprising first, second and third multiport repeaters, each multiport repeater having a repeater interconnect port, a plurality of local ports and repeating means for coupling all data received at one port of said repeater for transmission at all other ports of said repeater, first, second and third pluralities of signal connection means coupled to said pluralities of local ports of said first, second and third multiport repeaters respectively, first, second and third repeater interconnection means coupled to said repeater interconnect ports of said first, second and third multiport repeaters respectively, and a repeater interconnect bus means connected to each of said repeater interconnection means at different junctions therealong, said first multiport repeater having a transceiver connection port connected to said transceiver by a transceiver connection means, whereby data transmitted by a device coupled to any one of said signal connection means is received by all other devices coupled to said pluralities of signal connection means, and wherein each of said signal connection means has higher signal attenuation and lower resistance to interference than said standard Ethernet coaxial cable.
Claim 13
Dependent Claim
34 words
The local area network as defined in claim 8, wherein each of said multiport repeaters further comprises restoring means for restoring timing margins in said repeated data and regenerating means for regenerating a preamble.
References Cited (Backward Citations)
US3889064A
Cited
US4334306A
Cited
US4228535A
Cited
US4347498A
Cited
US4425662A
Cited
US4399531A
Cited
US4417334A
Cited
US4646361A
Cited
US4597079A
Cited
US4598399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |