Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Reexamination Certificate
2006-06-27
2006-06-27
Tran, Anh Q. (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Bus or line termination
C326S033000, C326S034000, C326S086000
Reexamination Certificate
active
07068066
ABSTRACT:
A communication system having first and second states for use with a shared transmission line composed of at least two conductors and composed of first and second transmission line segments connected to each other at a single connection point. In the first state, a termination is coupled to the single connection point and is operative to at least attenuate a signal propagated between the first and second segments. In the second state, a driver is coupled to the connection point and is operative to conduct a signal over the first and second segments.
REFERENCES:
patent: 5530377 (1996-06-01), Walls
patent: 5608312 (1997-03-01), Wallace
patent: 5793223 (1998-08-01), Fankeny
patent: 6425025 (2002-07-01), Kamepalli
“Active Termination of a high-speed, multi-drop, Bidirectional Digital Transmission System”, IBM Technical Cisclosure Bulletin, IBM Corp. New York, US, Aug. 1, 1990, pp. 301-303.
“Active Termination for Transmission Line” Database IBM TDB ‘Online!IBM’; IBM Technical Disclosure Bulletin, Mar. 1986, XP002210580, whole document.
Browdy & Neimark PLLC
Serconet Ltd.
Tran Anh Q.
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