Static information storage and retrieval – Read/write circuit – Differential sensing
Reexamination Certificate
2006-10-16
2010-10-26
Hur, J. H. (Department: 2824)
Static information storage and retrieval
Read/write circuit
Differential sensing
C365S222000
Reexamination Certificate
active
07821860
ABSTRACT:
A refresh control circuit and method generates a refresh signal in response to one of a plurality of clock signals and a temperature signal. The clock signals and temperature signal may be synchronized to prevent an incomplete refresh operation at a trip point of a temperature sensor. In one embodiment, a pulse generator may generate a temperature sensor enable signal in response to the clock signals when the clock signals are synchronized. In other embodiments, the temperature signal may be latched to prevent a transition in the refresh signal during a refresh operation. The temperature signal may be latched in response to one of the clock signals or the refresh signal.
REFERENCES:
patent: 5495452 (1996-02-01), Cha
patent: 7035157 (2006-04-01), Chang
patent: 2005/0052919 (2005-03-01), Chou
patent: 2006/0023546 (2006-02-01), Park
patent: 2006/0190210 (2006-08-01), Mukherjee
patent: 2005-222574 (2005-08-01), None
patent: 10-0232749 (1999-09-01), None
English language abstract for Korean Publication No. 10-0232749 in the form of Japanese Patent Application No. 07-092038.
English language abstract for Japanese Publication No. 2005-222574.
Won Myung-Gyoo
Yang Hiu-Kap
Hur J. H.
Samsung Electronics Co,. Ltd.
Volentine & Whitt PLLC
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