US Patent 7817516 Detection method for tilt of optical pickup head
Patent 7817516 was granted and assigned to Hon Hai Precision Industry Co Ltd on October, 2010 by the United States Patent and Trademark Office.
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A method is used for detecting a tilt of an optical pickup head. The method includes the steps of: capturing a plurality of images; converting the images to bitmap images; superposing the bitmap images together to form an superimposed bitmap image; setting a two-dimensional coordinating system of the superimposed bitmap image; determining coordinates of a first static spot, a second static spot, and dynamic spot; calculating a first distance between the first static spot and the dynamic spot, and a second distance between the second static spot and the dynamic spot based on the coordinates to determine a maximum distance; and comparing the maximum distance with a first standard distance to attain a conclusion whether the tilt is in an acceptable range.
US Patent 07817516 Detection method for tilt of optical pickup head US Patent 7817516 Detection method for tilt of optical pickup head
US Patent 07817516 Detection method for tilt of optical pickup head
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