US 6,983,378 B1 | ||
Data storage device and detection method | ||
Kenichi Kokubo, Toyko (Japan) | ||
Assigned to NEC Corporation, Tokyo (Japan) | ||
Filed on Dec. 20, 1999, as Appl. No. 9/466,925. | ||
Claims priority of application No. 11/009568 (JP), filed on Jan. 18, 1999. | ||
Int. Cl. G06F 11/30 (2006.01) |
U.S. Cl. 713—201 | 10 Claims |
1. A data storage device comprising:
storage means, installed in a housing, for storing predetermined confidential data;
data generation means comprising two electrodes disposed on said housing for generating data representing a deflection of
said housing in which said storage means is installed;
detection means for detecting a physical impact applied to said housing in accordance with the data generated by said data
generation means;
measure means for measuring a temperature in said housing in which said storage means is installed; and
correction means for correcting the data generated by said data generation means in accordance with the temperature measured
by said measure means,
wherein said detection means detects the physical impact applied to said housing in accordance with the data representing
the deflection after the correction by said correction means.
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