Patent ID: 8072857
Filing Date: 2011-12-06
Classification: G11B

Abstract:
1. A method for determining a condition for performing a write operation on an optical disc, the method comprising the steps of: performing a first test write operation at a low speed on an inner test track that is a write area on the optical disc arranged radially inside of user data tracks; setting writing condition A for performing a write operation at the low speed on the inner test track based on a result of the first test write operation; performing a second test write operation at the low speed on an outer test track that is a write area on the optical disc arranged radially outside of user data tracks; setting writing condition B for performing a write operation at the low speed on the outer test track based on a result of the second test write operation; performing a third test write operation at a high speed on the outer test track; setting writing condition C for performing a write operation at the high speed on the outer test track based on a result of the third test write operation; and calculating either a difference between the writing conditions A and B or a ratio of the writing condition A to the writing condition B and determining writing condition D for performing a write operation at the high speed on user data tracks by adding to the writing condition C the difference between the writing conditions A and B, or by multiplying the writing condition C by the ratio of the writing condition A to the writing condition B.