Patent ID: 7746744

Claim:
An optical recording system, comprising: a shock detector detecting a target signal level and detecting a shock when the target signal level exceeds a tolerant range; a frequency recorder recording a shock frequency according to the shock; a tolerant range controller adjusting the tolerant range according to the shock frequency, wherein the frequency recorder comprises a timer and counter for recording the number of shocks within a predetermined period and a register for recording a sequence of tolerant range for a plurality of tolerant ranges, and when the target level is shocked over once in the predetermined period, the tolerant controller automatically updates the tolerant range to another tolerant range according to the sequence of tolerant range; and an optical pick-up head, when the target signal level exceeds the maximum of the sequence of the tolerant range, the pick-up head stops writing data into an optical storage medium, and when the target signal level is less than the maximum of the sequence of the tolerant range, the pick-up head writes the data into the optical storage medium.