Memory with a refresh portion for rewriting data

Details Memory with a refresh portion for rewriting data Memory with a refresh portion for rewriting data

2006-09-21

2008-05-27

Hur, J. H. (Department: 2824)

Static information storage and retrieval

Systems using particular element

Ferroelectric

C365S222000, C365S230030, C711S106000

Reexamination Certificate

active

07379323

ABSTRACT:
This memory comprises a first frequency detecting portion detecting access frequencies with respect to a plurality of memory cell blocks respectively, a comparator comparing the access frequencies with respect to the plurality of memory cell blocks detected by the first frequency detecting portion with each other and a refresh portion exercising control for selecting a prescribed memory cell block from among the plurality of memory cell blocks on the basis of comparison data output from the comparator and preferentially rewriting data in the memory cells included in the selected memory cell block.

REFERENCES:
patent: 5777921 (1998-07-01), Takata et al.
patent: 5969981 (1999-10-01), Kono
patent: 6765838 (2004-07-01), Matsumoto et al.
patent: 6809951 (2004-10-01), Yamaguchi
patent: 2003/0058681 (2003-03-01), Coulson
patent: 2005/0207201 (2005-09-01), Madan et al.
patent: 2003-7051 (2003-01-01), None

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