Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus expansion or extension
Reexamination Certificate
2006-09-12
2006-09-12
Dang, Khanh (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus expansion or extension
C710S316000
Reexamination Certificate
active
07107380
ABSTRACT:
A single 10/100/1000BT Ethernet network physical layer chip and a single transformer, both within a mobile computer, are employed to provide a network connection to the mobile computer either through a network connection interface within a docking station receiving the mobile computer, when the mobile computer is docked, or through a network connection interface within the mobile computer, when the mobile computer is not docked. Connection traces to the unused network connection interface have the characteristics of a small, unterminated stub, with any reflections handled by intrinsic echo cancellation during 1000BT operation and negligible during 10/100BT operation.
REFERENCES:
patent: 5680397 (1997-10-01), Christensen et al.
patent: 2005/0097218 (2005-05-01), Sultenfuss et al.
Pericom's PI3L301D Application of the Week, Feb. 26, 2003.
Optimizing Laptop Docking Station Designs Using LAN Switches, Jun. 12, 2002.
Transformerless Ethernet and PICMG Applications, Vitesse, Sep. 20, 2004.
LAN Magnetics, Tuan Khuu, Feb. 23, 2001.
Dang Khanh
National Semiconductor Corporation
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