Methods applied to optical storage medium for identifying boundary between areas storing information with different characteristics

Abstract

A method applied to an optical storage medium for identifying a boundary between a first area and a second area is provided. The first area and the second area store information with different characteristics. The method includes moving an optical pickup unit in a radial direction for accessing the optical storage medium to generate a read-back signal, generating a feature signal according to the read-back signal detecting the feature signal to generate a plurality of detection values successively, dynamically selecting a plurality of monitored values from the detection values while the optical pickup unit is accessing the optical storage medium, and identifying the boundary between the first area and the second area according to the monitored values.

Dependencies are inferred from the claim text.