METHOD AND DEVICE FOR FOCUS CAPTURE ON A SPECIFIC LAYER OF AN OPTICAL STORAGE MEDIUM

摘要

A method and device for focus capture on a specific layer of an optical storage medium are disclosed. The optical storage medium has multiple information storage layers (L0, L1). The method is performed in device for reading from and/or writing to the optical storage medium. The method comprises identifying passing of a first information storage layer (L0) of said multiple information storage layers (L1, L1) during a ramping procedure of an optical pick-up unit in said device, and enabling a focus locking procedure to a specific information storage layer (L1) of the multiple layers of said optical storage medium at a position passed subsequently during said ramping procedure.