Polarity switched data bus for reduced electromagnetic interfere

Details Polarity switched data bus for reduced electromagnetic interfere Polarity switched data bus for reduced electromagnetic interfere

1996-07-19

1998-05-05

Voeltz, Emanuel T.

Pulse or digital communications

Repeaters

Testing

395306, 39520063, 375260, 375288, 375289, 375360, 370545, 371 56, H04L 2534, H04L 2549

Patent

active

057489025

ABSTRACT:
In a data bus with m data bits, electromagnetic interference is produced by polarity switching the data on that data bus. When two consecutive data items result in a change of over half of the data bits, the polarity of the second data item is switched, and a polarity signal is correspondingly switched on the data bus. When the data is received, it is restored to its original polarity by adjusting the polarity of the received data according to the signal on the polarity line. In this way, the total number of bit transitions between any two data items is reduced to a maximum of m/2.

REFERENCES:
patent: 4369516 (1983-01-01), Byrns
patent: 4558409 (1985-12-01), Goss et al.
patent: 4823364 (1989-04-01), Herzog
patent: 4825450 (1989-04-01), Herzog
patent: 4897854 (1990-01-01), Harris et al.
patent: 5057646 (1991-10-01), Nichols et al.
patent: 5283807 (1994-02-01), Graham
patent: 5406632 (1995-04-01), Sogo et al.
patent: 5422919 (1995-06-01), Graham
patent: 5438342 (1995-08-01), Yamaguchi
patent: 5438621 (1995-08-01), Hornak et al.
patent: 5446772 (1995-08-01), Korhonen
patent: 5517433 (1996-05-01), Morrison
patent: 5623518 (1997-04-01), Pfiffner
65100/101 "Panellink Technology High Speed Transmitter and Receiver, Data Sheet Revision 0.7", pp. i-iv, and 1-36 (Dec. 1996).
Panellink Overview (Jun. 19, 1996), Revision 0.4.
"Chip Set Reduces Rising EMI in Notebook Computers", Electronic Design (Jun. 24, 1996), p. 48.

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