Optical disc identification apparatus and method of identifying optical disc

A method of identifying an optical disc, the method being adapted to an apparatus equipped with an optic pickup unit having an object lens and a plurality of laser sources, the method comprising:

• activating one of the laser sources to emit any of lasers to the optical disc;
• moving the object lens;
• detecting the laser reflected by a data layer of the optical disc;
• calculating an FE signal based on the reflected laser and thereby obtaining a sectional width value of an S-curve of the FE signal;
• repeating above steps to obtain the sectional width values of the S-curves corresponding to all of the laser sources;
• and
• comparing the sectional width values, so as to identify the optical disc.

An optical disc identification apparatus, comprising:

• an optic pickup unit having a first laser source and a second laser source for emitting a first laser and a second laser, respectively;
• a control unit coupled to the optic pickup unit for controlling the optic pickup unit to activate the first and the second laser sources;
• and
• a comparing unit of the sectional width value of the S-curve, wherein the comparing unit is disposed in the control unit for recording and comparing the sectional width values of the S-curves of a first and a second FE signals generated by focusing the first and the second lasers on a data layer of the optical disc.