Tap board

Details Tap board Tap board

2006-10-23

2010-12-28

Bui, Hung S (Department: 2841)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C714S039000, C714S758000, C361S803000, C361S728000, C361S729000, C361S737000, C361S784000, C439S079000, C439S540100

Reexamination Certificate

active

07859856

ABSTRACT:
A protocol analyzer for analyzing traffic on a bus. A tap card is used to tap into a bidirectional bus. The tap provides a pass through connection from the card to the host and taps off of the bus. While tapping off the bus, stubs lengths are minimized and input capacitance is minimized. A repeater that preferably has no internal termination provides a differential input and a differential output or a single ended output. The bus lines are input to one of the inputs in the differential inputs and a reference voltage is provided to the other differential input. The reference voltage enables the tap to determine if the data is high or low. A jumper is also included in the tap such that the reference voltage can be selected from the host or from the pod.

REFERENCES:
patent: 4935864 (1990-06-01), Schmidt et al.
patent: 5260970 (1993-11-01), Henry et al.
patent: 5316488 (1994-05-01), Gardner et al.
patent: 5625805 (1997-04-01), Fenwick et al.
patent: 6352434 (2002-03-01), Emmert
patent: 6985967 (2006-01-01), Hipp
patent: 2001/0025353 (2001-09-01), Jakel
patent: 2004/0158793 (2004-08-01), Blightman et al.
patent: 2005/0040233 (2005-02-01), Korber et al.

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