Entry location in a content addressable memory

Details Entry location in a content addressable memory Entry location in a content addressable memory

2007-06-05

2007-06-05

Bragdon, Reginald (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C365S049130

Reexamination Certificate

active

10789705

ABSTRACT:
A method for performing a search in a content addressable memory (“CAM”) device comprising comparing a search key with compound entries in a CAM array, wherein at least one of the compound entries includes (i) a ternary CAM word having a data word and a mask word, and (ii) a mask specifier that indicates the state of the mask word, and wherein the search key includes (i) a search word component, and (ii) a search mask component, and wherein the ternary CAM word is compared with the search word and the mask specifier is compared with the search word component; and generating a match signal associated with an compound entry that matches the search key.

REFERENCES:
patent: 5920886 (1999-07-01), Feldmeier
patent: 6199140 (2001-03-01), Srinivasan et al.
patent: 6289414 (2001-09-01), Feldmeier et al.
patent: 6460112 (2002-10-01), Srinivasan et al.
patent: 6539455 (2003-03-01), Khanna et al.
patent: 6996664 (2006-02-01), Giambalvo

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