Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2007-07-31
2009-08-18
Dole, Timothy J (Department: 2831)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S533000, C324S534000
Reexamination Certificate
active
07576548
ABSTRACT:
A physical layer device includes a cable tester that determines a cable status of a cable and that includes a test module. The test module transmits a test pulse on the cable, measures a reflection amplitude, calculates a cable length, and determines the cable status based on the measured amplitude and the calculated cable length. An insertion loss estimator communicates with the cable tester, and estimates insertion loss of the cable based at least in part on a feedback equalizer gain.
REFERENCES:
patent: 4914394 (1990-04-01), Meyer
patent: 5420512 (1995-05-01), Spillane et al.
patent: 5461318 (1995-10-01), Borchert et al.
patent: 5559427 (1996-09-01), Hinds et al.
patent: 6138080 (2000-10-01), Richardson
patent: 6198727 (2001-03-01), Wakeley et al.
patent: 6341358 (2002-01-01), Bagg et al.
patent: 6377640 (2002-04-01), Trans
patent: 6434716 (2002-08-01), Johnson et al.
patent: 6438163 (2002-08-01), Raghavan et al.
patent: 6447899 (2002-09-01), Johnson et al.
patent: 6448899 (2002-09-01), Thompson
patent: 6522152 (2003-02-01), Tonti et al.
patent: 6535983 (2003-03-01), McCormack et al.
patent: 6694017 (2004-02-01), Takada
patent: 6728216 (2004-04-01), Sterner
patent: 6775529 (2004-08-01), Roo
patent: 6777952 (2004-08-01), Seymour
patent: 6825672 (2004-11-01), Lo
patent: 6829223 (2004-12-01), Richardson et al.
patent: 6873827 (2005-03-01), Wright
patent: 6891803 (2005-05-01), Chang et al.
patent: 6898185 (2005-05-01), Agazzi et al.
patent: 7127481 (2006-10-01), Lam
patent: 7203851 (2007-04-01), Lo et al.
patent: 2002/0124110 (2002-09-01), Tanaka
patent: WO 01/11861 (2001-02-01), None
patent: WO 01/11861 (2001-02-01), None
patent: WO 01/11861 (2001-02-01), None
U.S. Appl. No. 09/678,728, filed Oct. 4, 2000.
U.S. Appl. No. 60/217,418, filed Jul. 11, 2000.
U.S. Appl. No. 10/098,865, filed Mar. 15, 2002.
U.S. Appl. No. 09/991,043, filed Nov. 21, 2001.
IEEE Computer Society; IEEE Standard 802.3ab; IEEE Std 802.3-2002, IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications, Mar. 8, 2002, pp. 147-249.
Intel, LXT9784 Octal 10/100 Transceiver Hardware Integrity Function Overview, Jan. 2001, pp. 1-14.
IEEE Std. 802.3 IEEE Standard for Information Technology—Telecommunications and Information Exchange Between Systems-Local and Metropolitan Area Networks—Specific Requirements; Part 3: Carrier Sense Multiple Access with Collision (CSMA/DC) Access Method and Physical Layer Specifications, 2002, pp. 1-173.
Guo Yiging
He Runsheng
Janofsky Eric
Leung Tsin-Ho
Lo William
Dole Timothy J
Marvell International Ltd.
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