An optical disc identification apparatus is disclosed. The optical disc
identification apparatus includes an optic pickup unit and a control
unit. The optic pickup unit has a plurality of laser sources. The optic
pickup unit emits any of lasers to the optical disc and detects the
reflected laser from the optical disc to transduce the reflected laser to
a detection signal. The control unit controls the optic pickup unit to
activate any of the laser sources and moves an object lens of the optic
pickup unit. When the object lens moves, the control unit obtains a
sectional width value of an S-curve of a focus FE signal according to the
detection signal. The control unit repeats above steps to obtain the
sectional width values of the S-curves of all the laser sources and
identifies the optical disc according to all the sectional width values.