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AssigneeSamsung Electronics Co., Ltd.
InventorsMin Hwangbo, Byeong-ho Park, Sung-ro Go
Estimating the term…
A servo controlling apparatus of an optical disk drive and a control method thereof are provided for achieving precise control by automatically controlling the gain of error signals caused by the difference in the amount of light irradiated during recording and reproducing, and then using the automatically gain-controlled signal. In a first control step, a focus error signal and a tracking error signal generated from a photodetecting portion via an operator are multiplied by a predetermined value in different multipliers, and then each obtained value is divided by an RF sum signal to control the value of error to within a predetermined target value. In a second control step, each multiplied focus error signal and tracking error signal are divided by a DC signal corresponding to the average level of the RF sum signal when the error value reaches the target value.
A servo controlling apparatus of an optical disk drive comprising:
A servo controlling method for a servo controlling apparatus of an optical disk drive, including a photodetecting portion having photodetectors for outputting an electrical signals corresponding to an amount of incident light received;
Dependencies are inferred from the claim text.