Power saving data storage circuit, data writing method in...

Details Power saving data storage circuit, data writing method in... Power saving data storage circuit, data writing method in...

2008-05-20

2008-05-20

Sough, Hyung S. (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S101000

Reexamination Certificate

active

07376801

ABSTRACT:
It is an object to provide, in a data storage circuit for storing data, a power saving data storage circuit and a data writing method in the data storage circuit, and, further, to provide a data storage device. Thus, in the present invention, reading out existing data stored in a storage element M is performed prior to performing writing of new data to the storage element M to compare the existing data and the new data. The data storage circuit is configured so that in a case where the existing data and the new data are identical with each other, writing to the storage element M is not performed, and, in a case where the existing data and the new data are not identical with each other, writing of the new data to the storage element M is performed. The data storage circuit is formed on a semiconductor substrate to have a data storage device.

REFERENCES:
patent: 5412402 (1995-05-01), Searby et al.
patent: 6052302 (2000-04-01), Moyer et al.
patent: 2002/0145902 (2002-10-01), Kunikiyo et al.
patent: 59-135698 (1984-08-01), None
patent: 07-065586 (1995-03-01), None
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patent: 2003-016779 (2003-01-01), None
Supplementary European Search Report, Oct. 20, 2006.
Japanese Office Application No. 2002-079528 dated Jun. 20, 2006.

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