Patent ID: 8018805

Claim:
A method for detecting a media type of an optical disc, comprising the steps of: (A) performing an initial read of said optical disc to check for a first phase lock and a first frequency match of a first wobble signal associated with a first media type compared to a first starting frequency, wherein (i) said optical disc comprises a plurality of locations where a read head can be located, (ii) said initial read occurs at any of said plurality of locations, (iii) said initial read occurs prior to any movement of said read head between said plurality of locations, and (iv) said initial read is used to determine whether said optical disc is said first media type or a second media type prior to any movement of said read head; (B) if step (A) detects said first wobble signal, operating said optical disc as said first media type; (C) checking for a second phase lock and a second frequency match of a second wobble signal associated with said second media type compared to a second starting frequency; and (D) if step (C) detects said second wobble signal, operating said optical disc as said second media type.