US Patent 7177225 Block redundancy implementation in heirarchical RAM'S

Patent 7177225 was granted and assigned to Broadcom (company) on February, 2007 by the United States Patent and Trademark Office.

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Patent Inventor Names

Cyrus Afghahi0

Esin Terzioglu0

Gil I. Winograd0

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Patent abstract

The present invention relates to a system and method for providing redundancy in a hierarchically memory, by replacing small blocks in such memory. The present invention provides such redundancy (i.e., replaces such small blocks) by either shifting predecoded lines or using a modified shifting predecoder circuit in the local predecoder block. In one embodiment, the hierarchal memory structure includes at least one redundant predecoder adapted to be shifted in for at least one active predecoder of a plurality of predecoders adapted to be shifted out.

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https://pdfpiw.uspto.gov/.piw?Docid=071772250

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