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PERFORMING LOOKUP OPERATIONS USING ASSOCIATIVE MEMORIES OPTIONALLY INCLUDING MODIFYING A SEARCH KEY IN GENERATING A LOOKUP WORD AND POSSIBLY FORCING A NO-HIT INDICATION IN RESPONSE TO MATCHING A PARTICULAR ENTRY

  • US 7,103,708 B2
  • Filed: 08/10/2002
  • Issued: 09/05/2006
  • Est. Priority Date: 08/10/2002
  • Status: Active Grant
First Claim
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1. A method performed by an associative memory for use in performing a lookup operation on a plurality of associative memory entries included in the associative memory, the method comprising:

  • receiving a search key and modification data;

    identifying a modification mapping;

    modifying the search key based on the modification data and the modification mapping to generate a lookup word; and

    performing the lookup operation on the plurality of associative memory entries based on the lookup word to generate a result.

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