Patent ID: 6560172
Filing Date: 2003-05-06
Classification: G11B

Abstract:
An optical disc recording method, comprising the steps of:irradiating an optical beam for information recording onto an optical disc, based on a recording signal; forming at least one pit having predetermined length on a land disposed on the optical disc; obtaining a light receiving signal by causing a light receiving element, having a light receiving surface segmented in a radial direction of the optical disc, to receive light reflected from a pit forming part and a non-pit forming part, both of which are formed on the optical disc at a time of information recording; sampling and holding the light receiving signal derived from the light receiving element; and performing a tracking servo operation and detecting a wobble signal on the basis of balance of the sampled and held light receiving signal as viewed in the radial direction of the optical disc; wherein when a recording speed is lower than a predetermined recording speed, the sampling and holding step is performed to detect the wobble signal during a power-off period of the recording signal, and wherein when the recording speed is higher than the predetermined recording speed, the sampling and holding step is performed during a power-on period of the recording signal.