Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2006-03-28
2006-03-28
Korzuch, William (Department: 2653)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S047510, C369S053260
Reexamination Certificate
active
07020061
ABSTRACT:
A method for detecting a current through a pick-up head in an optical storage device. An output value is first set and a root-mean-square value corresponding to the current is further obtained. Next, compute a new value according to the root-mean-square value and a preset value, wherein the preset value is expressed in exponential form and related to an allowable current and a maximum current of the pick-up head. The output value is set as the new value. The pick-up head is shut down if the output value is greater than a threshold value within a sampling number, else repeating the step of obtaining the root-mean-square value.
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Chu Meng-Huang
Lin Meng-Fu
Chu Kim-Kwok
J.C. Patents
Korzuch William
VIA Technologies Inc.
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