| 摘要 |
An apparatus and method for servo balance calibration in an optical disc driver are described. The optical disc driver comprises an OPU for emitting light beam to an optical disc and detecting a reflection light from the optical disc to generate a set of detected signals. The apparatus comprises an amplifying unit, a servo signal generator, a controlling unit, and a balance calibration unit. The amplifying unit receives the detected signals and amplifies the detected signals to be a first set of amplified signals. The servo signal generator having the servo balance gain receives the first set of amplified signals and generates a first servo signal derived from the first set of amplified signals. The controlling unit coupled to the OPU and the amplifying unit controls at last one of the OPU and the amplifying unit to generate a second set of amplified signals. The balance calibration unit coupled to the servo signal generator calculates the first servo signal and a second servo signal derived from the second set of amplified signals to adjust the servo balance gain.
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