Pulse or digital communications – Cable systems and components
Reexamination Certificate
2008-08-07
2009-12-08
Tran, Khai (Department: 2611)
Pulse or digital communications
Cable systems and components
C375S219000
Reexamination Certificate
active
07630446
ABSTRACT:
An automatic polarity swap is implemented in a communications system. Two or more transceivers having differential inputs and outputs are coupled together through an interface, such as a backplane to form a communications system. In such a configuration, it is possible to cross-connect the differential data lines or signals at the interface, which will cause invalid data words to received at the second transceiver. Accordingly, the present invention includes an error check and correction module that detects invalid data words after parallel-to-serial conversion. More specifically, an error check determines if the parallel differential signal represents a valid data word. This can be done, for example, by storing and comparing valid data words in a memory such as RAM. If the received data word is valid, then no corrective action is taken. However, if the received data word is invalid, then the parallel differential signal is inverted using a logic circuit, which will correct the error if it is due to cross-connection of the differential lines at the interface or anywhere else.
REFERENCES:
patent: 4627070 (1986-12-01), Champlin et al.
patent: 4833605 (1989-05-01), Terada et al.
patent: 4833695 (1989-05-01), Greub
patent: 4967201 (1990-10-01), Rich, III
patent: 5726991 (1998-03-01), Chen et al.
patent: 5793990 (1998-08-01), Jirgal et al.
patent: 5903613 (1999-05-01), Ishida
patent: 5933021 (1999-08-01), Mohd
patent: 6081570 (2000-06-01), Ghuman et al.
patent: 6137734 (2000-10-01), Schoner et al.
patent: 6140956 (2000-10-01), Hillman et al.
patent: 6259693 (2001-07-01), Ganmukhi et al.
patent: 6317804 (2001-11-01), Levy et al.
patent: 6438717 (2002-08-01), Butler et al.
patent: 6483849 (2002-11-01), Bray et al.
patent: 6820232 (2004-11-01), Kim et al.
patent: 7032139 (2006-04-01), Iryami et al.
patent: 7035228 (2006-04-01), Baumer
patent: 7133648 (2006-11-01), Robinson et al.
patent: 7298837 (2007-11-01), Patterson
patent: 7430240 (2008-09-01), Parthasarathy
patent: 2001/0012288 (2001-08-01), Yu
patent: 2001/0015664 (2001-08-01), Taniguchi
patent: 2001/0017595 (2001-08-01), Cliff et al.
patent: 2001/0021953 (2001-09-01), Nakashima
patent: 2002/0054569 (2002-05-01), Morikawa
patent: 2003/0009307 (2003-01-01), Mejia et al.
patent: 2003/0048781 (2003-03-01), Pierson
patent: 2003/0057932 (2003-03-01), Chang et al.
patent: 2003/0120791 (2003-06-01), Weber et al.
patent: 2003/0172332 (2003-09-01), Rearick et al.
patent: 2004/0083077 (2004-04-01), Baumer et al.
patent: 2004/0088443 (2004-05-01), Tran et al.
patent: 2004/0117698 (2004-06-01), Tran et al.
patent: 2004/0141497 (2004-07-01), Amirichimeh et al.
patent: 2004/0141531 (2004-07-01), Amirichimeh et al.
patent: 2004/0153945 (2004-08-01), Takami
patent: 2004/0181734 (2004-09-01), Saliba
patent: 2005/0086571 (2005-04-01), Farnsworth
patent: 2005/0190690 (2005-09-01), Tran
patent: 2006/0250985 (2006-11-01), Baumer
patent: 2007/0011587 (2007-01-01), Platenberg et al.
Cisco Systems, Hiroshi Suzuki: Taking Ethernet Beyond the LAN, http:/
ewsroom.cisco.com/dlls/innovators/optical/hiroshi—suzuki—profile.html, first online Dec. 4, 2002, 2 pages.
Cisco Systems, Q&A: Hiroshi Suzuki on Extending Ethernet Beyond the LAN, http:/
ewsroom.cisco.com/dlls/innovators/optical/hiroshi—suzuki—qa.html, first online Dec. 4, 2002, 3 pages.
Cisco Systems, Innovators Profiles, http:/
ewsroom.cisco.com/dlls/innovators/inn—profiles.html, first online Oct. 21, 2002, 8 pages.
Cisco Systems, Optical, http:/
ewsroom.cisco.com/dlls/innovatros/optical/ (2002), 2 pages.
Cisco Systems, Cisco Systems ad Aretae Interactive Launch Internet Powered Property (IP2), http:/
ewroom.cisco.com/dlls/global/asiapac
ews/2000/pr—07-25.html, 3 pages, Jul. 25, 2000.
“Broadcom Announces the First 0.13-micron CMOS Multi-Rate Gigabit Octal Serializers/Deserializers” [online], Broadcom Press Release, Oct. 29, 2002, http://www.broadcom.com/cgi-bin/pr/prps.cgi?pr—id=PR021029, 5 pages.
BCM8040 8-Channel Multi-rate 1.0-3.2-GBPS Retimer Switch [online], Broadcom Products Site Guide http://www.broadcom.com/products/8040.html (2 pages), first online Dec. 27, 2002.
8-Channel Multi-Rate CMOS Retimer with Full Redundancy [online], BCM8040 Product Brief, Broadcom Corporation, http://www.broadcom.com/products/8040.html, 2 pages, Mar. 8, 2002.
BCM8020 8-Channel Multi-rate 1.0-3.2-GBPS Transceiver [online], Broadcom Products Site Guide, http://www.broadcom.com/products/8020.html, 2 pages, first online Nov. 6, 2002.
8-Channel Multi-Rate CMOS Transceiver with Full Redundancy [online], BCM8020 Product Brief, Broadcom Corporation, http://www.broadcom.com/products/8020.html, 2 pages, Mar. 8, 2002.
BCM8021 4-Channel Multi-rate 1.0-3.2-GBPS Transceiver with High-Speed Redundancy [online], Broadcom Products Site Guide, http://www.broadcom.com/products/8021.html, 2 pages, first online Dec. 27, 2002.
4-Channel Multirate 1.0-3.2-GBPS Transceiver with High-Speed Redundancy [online], BCM8021 Product Brief, Broadcom Corporation http://www.broadcom.com/products/8021.html, 2 pages, Oct. 30, 2002.
Broadcom Announces the Industry's First 0.13-micron CMOS Advanced Transciver Solution with Signal Conditioning for Low-Cost 10-Gigabit Over Copper Links [online], Broadcom Press Release, Apr. 29, 2003, http://www.broadcom.com/cgi-bin/pr/prps.cgi?pr—id=PR030429A, 4 pages.
Alaska Quad-Port Gigabit Ethernet Over Copper Transceivers, from http://www.marvell.com/products/transceivers/quadport/ . . . , 1 page, (2002).
Alaska X10 Gigabit Ethernet Alaska Gigabit Ethernet Fast Ethernet Physical Layer (PHY) Transceiver Families Provide a Full Range of Ethernet Transceiver Solutions for the Broadband Communications Industry, from http://www.nuhorizons.com/FeaturedProducts/Volume3/Marvell/phy—transceiver.asp , 4 pages, first online Feb. 26, 2007.
Industry Breakthrough: Marvell Announces the First Quad-Port Transceiver to Support Both Copper and Fiber-Optic Gigabit Ethernet Interfaces, from Business Wire at www.encyclopedia.com/printable/aspx?id=1G1:68912211, 4 pages, Jan. 9, 2001.
David Maliniak (ed.), Bel's integrated connector modules support Marvell's Alaska quad Gigabit Ethernet transceiver, from http://www.electronicsweb.com/Content
ews/ . . . , 1 page, Dec. 14, 2000.
Marvell Gets Small, from http://www.lightreading.com/document.asp?doc—id=12004&print—true, 1 page, Feb. 19, 2002.
Marvell Introduces the Industry's Smallest Quad-Port Gigabit Transceiver Device, Enabling Ultra High Port Density Enterprise Switching Systems, from http://www.marvell.com/press/pressNewsDisplay.do?releaseID-41, 3 pages, Feb. 19, 2002.
Q&A: Hiroshi Suzuki on Extending Ethernet Beyond the LAN, from http:/
ewsroom.cisco.com/dlls/innovators/optical/hiroshi—suzuki—qa.html, 3 pages, first online Dec. 4, 2002.
IEEE Std. 802.3, Part 3: Carrier Sense Multiple Access with Collision Detection(CSMA/CD)access method and physical layer specifications, Section Two, pp. 9-55, 2002.
IEEE Std. 802.3, Part 3: Carrier Sense Multiple Access with Collision Detection(CSMA/CD)access method and physical layer specifications, Section Four, pp. 9-152, 2005.
Ed Turner, David Law, Sept. 17-19, 2001, “IEEE P802.3ae MDC/MDIO”, http://www.ieee802.org/3/efm/public/sep01/turner—1—0901.pdf.
Broadcom Corporation
Sterne Kessler Goldstein & Fox P.L.L.C.
Tran Khai
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