Patent ID: 7475173
Filing Date: 2009-01-06
Classification: G06F,G11B

Abstract:
1. In an optical disc drive having a laser for at least reading an optical disc, a spindle motor for moving the optical disc, an actuator for moving the laser relative to the optical disc, a read device preamplifier coupled to the laser, and a servo control coupled to the actuator for driving the actuator in response to control signals, an integrated optical disc drive controller integrated circuit comprising: a host interface for interfacing with a host computer; at least one internal communications and control bus, for transferring stored data and control data to and from elements within the integrated optical disc drive controller and interconnected with the host interface to transfer stored data and control data to and from the integrated optical disc drive controller; a read device data processor, coupled to the read device preamplifier and the at least one internal communications and control bus, for receiving and processing read device data from the read device preamplifier; motion control servo logic, coupled to the at least one internal communications and control bus, and to the servo control, for generating control signals for driving the servo control; an optical disc controller, coupled to the at least one internal communications bus, for transferring stored data to the host interface; and a microcontroller, coupled to the at least one internal communications bus, for generating control data to control devices within the integrated optical disc drive controller integrated circuit.