Redundant circuit presents connections on specified I/O ports
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United States of America Patent
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Nov 24, 2009
Grant Date -
N/A
app pub date -
Oct 13, 2006
filing date -
Dec 18, 2003
priority date (Note) -
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Abstract
A method and apparatus for utilizing redundant circuitry on integrated circuits (ICs) that may increase manufacturing yields, while maintaining a predetermined set of interfaces for connection with external circuitry without drastically increasing die area and circuit complexity are provided. In this manner, even though an IC may have defects which would otherwise render it inoperable, embodiments of the present invention allow the defects to be circumscribed or avoided while still maintaining a predetermined set of interfaces, thus providing for an operational circuit. Various embodiments further provide a method for sorting or separating devices based on their level of functionality or performance, which in turn depends on their number of defects and the desired number of interfaces.
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