Patent ID: 8154959
Filing Date: 2012-04-10
Classification: G11B

Abstract:
1. A spherical aberration (SA) compensation apparatus of an optical storage system, comprising: a microprocessor, for repeatedly regulating a compensation value of an SA compensation driver in an optical-pickup-head (OPH) after determining a type of an optical storage medium and before the OPH has focused on the optical storage medium; and a digital signal processor (DSP), coupled to the microprocessor, for processing a plurality of electrical signals converted through the OPH when each time the compensation value has been regulated, so as to obtain width values of a plurality of focus error (FE) signals, wherein the microprocessor makes the SA compensation driver to drive an SA compensation unit in the OPH according to the width values of the FE signals, so as to compensate an SA of a light point generated by the OPH and focused on an optical storage medium.