Apparatus and method for identifying optical disc type

A data recording and/or reproducing apparatus for recording data onto and/or reproduce data from a disc, comprising:

• a first driving unit for controlling the disc to rotate;
• an optical pick-up unit for emitting a light beam onto a track of the disc and detecting a reflected light beam from the disc;
• a second driving unit for driving the optical pick-up unit to move along a radial direction of the disc;
• a servo control unit for controlling the first driving unit to drive the disc to rotate and controlling the second driving unit to drive the optical pick-up unit to move;
• and
• a controller for sending commands to the servo control unit to have the servo control unit control the second driving unit to drive the optical pick-up unit to move from a first position to a second position, for extracting a first address of the first position and a second address of the second position from the reflected light beam from the disc, and for identifying a type of the disc by comparing a difference between the first address and the second address with a predetermined value.

A storage medium for storing a computer-executable program, the program having a computer executable steps of:

• obtaining a first address of a first position on a disc;
• moving a pick-up unit to a second position of the disc;
• obtaining a second address of the second position;
• calculating a difference between the first address and the second address;
• and
• identifying the type of the disc by comparing the difference with a predetermined value.