Patent ID: 8570848

Claim:
An optical storage system for reading data, comprising: an optical pick-up head, for receiving and transforming an optical signal into an electric signal; a pre-amplifier, for receiving the electric signal and then outputting a radio frequency (RF) signal and a position error signal; a data and timing recovery unit, for receiving the RF signal to generate a modulated signal and a clock signal; an error correction unit, for receiving the modulated signal and the clock signal to generate a data signal; a defect signal generator, for generating a defect signal according to the RF signal, wherein the defect signal is enabled when the RF signal has a defect; a servo controller, for receiving the position error signal and the defect signal and generating a servo control signal; and an error correction controller, coupled to the defect signal generator, for generating an error correction control signal according to characteristics of the defect signal, wherein the error correction unit is further coupled to the error correction controller so that a decoding strategy of the error correction unit is adjusted according to the error correction control signal.