Electrical computers and digital data processing systems: input/ – Input/output data processing – Transfer direction selection
Reexamination Certificate
2004-09-08
2008-03-04
Huynh, Kim (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Transfer direction selection
C710S052000, C710S058000, C326S093000, C326S094000
Reexamination Certificate
active
07340541
ABSTRACT:
A system and method for buffering bidirectional digital input/output (I/O) lines. The system (e.g., data acquisition system) may comprise a device including circuitry for buffering bidirectional digital lines. A first integrated circuit (IC) of the device includes a first and a second bidirectional buffer coupled to a first bidirectional digital I/O line, and a second IC of the device includes a third bidirectional buffer. The first IC and the second IC each include a control unit to control the driving direction of the corresponding bidirectional buffers independently to change the direction of the data flow through the first bidirectional digital I/O line from the output direction to the input direction or vice versa. The driving direction of the bidirectional buffers are changed at different times in a particular sequence, and the order depends on whether the direction change is from the output direction to the input direction or vice versa.
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Castro Rafael
Moch Andrew B.
Nickel Sean M.
Hood Jeffrey C.
Huynh Kim
Lewin Mario J.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
National Instruments Corporation
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