Current mode circuitry to modulate a common mode voltage

Details Current mode circuitry to modulate a common mode voltage Current mode circuitry to modulate a common mode voltage

2011-01-18

2011-01-18

Cho, James (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S086000

Reexamination Certificate

active

07872498

ABSTRACT:
In some embodiments, a chip includes transmitters to transmit differential signals on conductors; and current mode circuitry to selectively modulate a common mode voltage of the differential signals to communicate data. In other embodiments, a system includes a first chip to transmit first and second differential signals on conductors, and a second chip. The second chip includes receivers to receive the first and second differential signals from the conductors and provide received signals representative thereof, and current mode circuitry to selectively modulate a common mode voltage of either the first or second differential signals to communicate data and wherein the first chip includes common mode detection circuitry to detect changes in the common mode voltage. Other embodiments are described and claimed.

REFERENCES:
patent: 6307543 (2001-10-01), Martin
patent: 6469652 (2002-10-01), Aude
patent: 6617888 (2003-09-01), Volk
patent: 6639434 (2003-10-01), Rahman
patent: 6696890 (2004-02-01), Hedberg et al.
patent: 6731135 (2004-05-01), Brunolli
patent: 7348810 (2008-03-01), Nair
patent: 2006/0187329 (2006-08-01), Panicacci
patent: 2006/0232336 (2006-10-01), Gatti

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