Ethernet automatic fiber/copper media selection logic

Details Ethernet automatic fiber/copper media selection logic Ethernet automatic fiber/copper media selection logic

2003-05-09

2008-01-29

Abelson, Ronald (Department: 2616)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S384000, C370S469000

Reexamination Certificate

active

07324507

ABSTRACT:
A network device includes a media access controller (MAC) and a physical layer device including an interface that communicates with the MAC, and first and second transceivers. A first autonegotiation circuit attempts to establish a first link using the first transceiver over a first medium. A second autonegotiation circuit attempts to establish a second link using the second transceiver over a second medium. A media selector communicates with the interface and the first and second autonegotiation circuits and enables data flow from the first medium to the MAC using the interface when the link over the first medium is established first. When a preferred medium selector prefers the second medium, the media selector monitors the second medium for a qualified energy detect event. When the qualified energy detect event occurs, the media selector allows a link to be established by the second medium.

REFERENCES:
patent: 5610903 (1997-03-01), Crayford
patent: 5737108 (1998-04-01), Bunch et al.
patent: 5922052 (1999-07-01), Heaton
patent: 6072803 (2000-06-01), Allmond et al.
patent: 6073006 (2000-06-01), Sawyer et al.
patent: 6215816 (2001-04-01), Gillespie et al.
patent: 6259745 (2001-07-01), Chan
patent: 6272173 (2001-08-01), Hatamian
patent: 6275501 (2001-08-01), Lucas et al.
patent: 6285659 (2001-09-01), Feuerstraeter et al.
patent: 6385738 (2002-05-01), Lo
patent: 7012897 (2006-03-01), Sowizral et al.
patent: 2003/0035410 (2003-02-01), Laroia et al.
patent: 2004/0022238 (2004-02-01), Kimmitt
patent: 0986217 (2000-03-01), None
IEEE Stadard 802.3, Local and Metropolitan Area Networks: Physical Layer Link Signaling for 10 Mb/s, and 1000 Mb/s Auto-Negotiation on Twisted Pair, 2000 Edition, pp. 698-745; and pp. 1009-1033.
IEEE Standard 802.3, 2000 Edition, Local and Metropolitan Area Networks: Sections 28-38, pp. 698-1033.

Affiliated with

Also associated with

Rating

Ethernet automatic fiber/copper media selection logic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ethernet automatic fiber/copper media selection logic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ethernet automatic fiber/copper media selection logic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3963647