Patent ID: 7460461

Claim:
An optical storage system comprising: an optical pickup unit movable across an optical medium, the optical pickup unit comprising a light detector, a laser diode, and a laser driver signal processor circuit comprising: a detected signal processing block for outputting read signals corresponding to light received at the light detector; and a read signal processing block for processing the read signals and generating control signals or synthesis signals according to the read signals; and a control unit being coupled to the optical pickup unit for controlling the optical pickup unit and decoding data recovered from the optical medium; wherein the laser driver signal processor circuit further comprises an interface circuit coupled to the control unit; the interface circuit has a plurality of control registers for receiving commands from the control unit and for configuring the laser driver signal processor circuit according to the received commands; and the laser driver signal processor circuit and the control unit further comprise encryption/decryption modules for respectively encrypting or decrypting the commands and information sent between the control unit and the laser driver signal processor circuit through the interface circuit.