GAIN CALIBRATION DEVICE AND METHOD OF GAIN CALIBRATION
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United States of America Patent
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Issued Date -
May 20, 2010
app pub date -
Nov 13, 2009
filing date -
Nov 14, 2008
priority date (Note) -
Abandoned
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Abstract
A gain calibration device includes an integrator, a first register, a controller, and a second register. When an optical image stabilizer is activated, the controller determines whether a current magnification of an image processing equipment is the same as a previous magnification. When the current magnification is not the same as the previous magnification, the controller reads the current magnification. Then the first registers stores a reference magnification, which is corresponding to a reference gain value of the optical image stabilizer. The second register temporarily stores a current gain value. Based on the reference magnification, the reference gain value and the current magnification, the controller calculates the current gain value corresponding to the current magnification for compensating the optical image stabilizer.
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