Patent ID: 7116616
Filing Date: 2006-10-03
Classification: G11B

Abstract:
1. A method of controlling an optical drive to write data onto an optical disc, the drive comprises a pickup head for emitting a laser to write data onto the disc, the method comprising: measuring the frequency of a wobble signal read from the disc to obtain a linear velocity of the disc; determining a write-in power emitted from the pickup head based on the linear velocity of the disc when the disc is passing through the pickup head under constant angular velocity; adjusting the write-in power to get an optimal write-in power data; storing the linear velocity and the corresponding optimal write-in power data of the optical disc in a table, wherein the table is utilized for storing at least a group of write-in power data each corresponding to a linear velocity; checking the optical drive to see whether the spaces of the table are enough or not to store an additional group of a linear velocity against a write-in power; if the memory space is enough, proceeding to get the additional group of a linear velocity against the corresponding write-in power data; and if the memory space is not enough, not proceeding to get the additional group of a linear velocity against the corresponding write-in power data.