Static information storage and retrieval – Read/write circuit – Differential sensing
Reexamination Certificate
2011-07-12
2011-07-12
Le, Thong Q (Department: 2827)
Static information storage and retrieval
Read/write circuit
Differential sensing
C365S189040, C365S185210, C365S230060, C365S196000, C365S189150
Reexamination Certificate
active
07978552
ABSTRACT:
A memory includes memory cells, wherein during a first write operation in which first logical data is written in all memory cells connected to a first word line, a source line driver and a word line driver, the source line driver shifts a voltage of a selected source line corresponding to the first word line in a direction away from the voltage of the first word line and the word line driver shifts a voltage of a second word line in a same direction as a transition direction of voltage of a selected source line, and during a second write operation in which second logical data is written in a selected cell connected to the first word line, the source line driver and the word line driver shift voltages of the selected source line and the second word line in a direction approaching the voltage of the first word line.
REFERENCES:
patent: 6621725 (2003-09-01), Ohsawa
patent: 7539043 (2009-05-01), Ohsawa
patent: 2009/0273976 (2009-11-01), Maejima et al.
patent: 2006-301377 (2006-11-01), None
Matsuoka Fumiyoshi
Ohsawa Takashi
Kabushiki Kaisha Toshiba
Le Thong Q
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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