Static information storage and retrieval – Associative memories – Ferroelectric cell
Reexamination Certificate
2006-06-01
2008-03-18
Yoha, Connie C. (Department: 2827)
Static information storage and retrieval
Associative memories
Ferroelectric cell
C365S205000, C711S108000, C711S158000
Reexamination Certificate
active
07345897
ABSTRACT:
Ternary content-addressable memory (TCAM) entries are disclosed for use in performing error-protected lookup operations by allowing an error budget of u deviations in values stored in each entry. Each TCAM entry is configured to identify a hit condition (else a miss condition) with an input lookup word if its stored value matches each bit of the lookup word with the exception of zero to u of its cells not matching. This determination may be made, for example, using discrete logic or based a voltage level of one or more match lines. Furthermore, it is possible to store at least 2u+1 copies of a data value desired to be protected in a such a TCAM entry among its said t TCAM cells.
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Krishnan Sriram Chitoor
Panigrahy Rina
Parthasarathy Sunil
Cisco Technology Inc.
The Law Office of Kirk D. Williams
Yoha Connie C.
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