Static information storage and retrieval – Radiant energy – Amorphous
Reexamination Certificate
2005-07-29
2008-12-02
Phan, Trong (Department: 2827)
Static information storage and retrieval
Radiant energy
Amorphous
C365S148000, C365S163000
Reexamination Certificate
active
07460389
ABSTRACT:
Improved write operation techniques for use in phase-change-material (PCM) memory devices are disclosed. By way of one example, a method of performing a write operation in a phase-change-material memory cell, the memory cell having a set phase and a reset phase associated therewith, comprises the following steps. A word-line associated with the memory cell is monitored. Performance of a write operation to the memory cell for the set phase is initiated when the word-line is activated. The write operation to the memory cell for the set phase may then be continued when valid data for the set phase is available. A write operation to the memory cell for the reset phase may be performed when valid data for the reset phase is available. Other improved PCM write operation techniques are disclosed.
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Hsu Louis L. C.
Ji Brian L.
Lam Chung Hon
International Business Machines - Corporation
Phan Trong
Ryan & Mason & Lewis, LLP
Tuchman Ido
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