Apparatus for determining locations of fields in a data unit

Details Apparatus for determining locations of fields in a data unit Apparatus for determining locations of fields in a data unit

2011-07-12

2011-07-12

Shah, Chirag G (Department: 2477)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

Reexamination Certificate

active

07978700

ABSTRACT:
A header analyzer unit generates attribute information regarding headers of a data unit. The header analyzer unit includes a programmable memory unit having a content addressable memory (CAM) with an input to receive a first portion of the data unit and a second portion of the data unit. The programmable memory unit also includes a memory separate from the CAM and coupled to an output of the CAM. The CAM stores indications of locations within the memory separate from the CAM, and the memory separate from the CAM programmably stores header attribute information regarding a plurality of different types of headers for data units having different formats.

REFERENCES:
patent: 6304903 (2001-10-01), Ward
patent: 7212531 (2007-05-01), Kopelman et al.
patent: 2002/0163909 (2002-11-01), Sarkinen et al.
patent: 2005/0141513 (2005-06-01), Oh et al.
Pagiamtzis et al. “Content-Addressable Memory (CAM) Circuits and Architectures: A Tutorial and Survey,”IEEE Journal of Solid-State Circuits, vol. 31, No. 3, pp. 712-727, Mar. 2006.

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