Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2006-09-05
2006-09-05
Sparks, Donald (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S002000, C711S005000, C711S101000, C711S108000, C711S170000, C711S173000, C711S202000, C370S235000, C370S328000, C370S382000, C370S386000, C370S389000, C370S392000, C370S400000, C707S793000
Reexamination Certificate
active
07103708
ABSTRACT:
Methods and apparatus are disclosed for performing lookup operations using associative memories, including, but not limited to modifying search keys within an associative memory based on modification mappings, forcing a no-hit condition in response to a highest-priority matching entry including a force no-hit indication, selecting among various sets or banks of associative memory entries in determining a lookup result, and detecting and propagating error conditions. In one implementation, each block retrieves a modification mapping from a local memory and modifies a received search key based on the mapping and received modification data. In one implementation, each of the associative memory entries includes a field for indicating that a successful match on the entry should or should not force a no-hit result. In one implementation, an indication of which associative memory blocks or sets of entries to use in a particular lookup operation is retrieved from a memory.
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Devireddy Dileep Kumar
Eatherton William N.
Ertemalp Fusun
Holbrook Hugh Weber
Kanekar Bhushan Mangesh
Cisco Technology Inc.
Farrokh Hahem
Sparks Donald
The Law Office of Kirk D. Williams
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