US 6,982,918 B2 | ||
Data storage device and refreshing method for use with such device | ||
Pierre Fazan, Avenue Du Carroz 1, 1110 Morges (Switzerland); and Serguei Okhonin, Avenue Jolimont 2, 1005 Lausanne (Switzerland) | ||
Appl. No. 10/487,162 PCT Filed Mar. 17, 2003, PCT No. PCT/EP03/02747 § 371(c)(1), (2), (4) Date Feb. 17, 2004, PCT Pub. No. WO03/088255, PCT Pub. Date Oct. 23, 2003. |
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Claims priority of application No. 02405314 (EP), filed on Apr. 18, 2002; and application No. 02077116 (EP), filed on May 29, 2002. | ||
Prior Publication US 2004/0240306 A1, Dec. 02, 2004 | ||
Int. Cl. G11C 11/00 (2006.01) |
U.S. Cl. 365—222 | 16 Claims |
1. A data storage device comprising:
a plurality of data storage cells, each said cell having a physical parameter in use which varies with time and has one of
two data representing states, each said data representing state representing a respective binary logic state; and
refreshing means for applying input signals to each said data storage cell to at least partially reverse variation of said
physical parameter with time of at least those data storage cells in a predetermined one of said states, wherein said input
signals cause a different variation in said physical parameter in cells in one of said data representing states than the variation
caused in cells in the other of said data representing states.
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