Patent ID: 6058088
Filing Date: 2000-05-02
Classification: G11B

Abstract:
A cleaning method for cleaning an optical lens of a compact disk drive by using a cleaning disk, the compact disk drive comprising a compact disk holder for holding a compact disk with a reflective surface, a motor for spinning the compact disk holder, an optical module having a movable optical lens facing the compact disk for reading data imprinted on the reflective surface of the compact disk, a lens driver for driving the optical lens up and down to focus the optical lens on the compact disk and stopping focusing and then retreating the optical lens when reading failure occurs, and a radial driver for driving the optical module horizontally, the cleaning disk comprising a cleaning surface having a cleaning means installed on the cleaning surface for cleaning the optical lens and a non-reflective innermost track, the cleaning method comprising:(1) moving the compact disk holder out to load a disk;(2) using the radial driver to drive the optical module to an innermost track of the loaded disk and using the lens driver to focus the optical lens on the innermost track of the loaded disk to identify whether the loaded disk is a cleaning disk;(3) if the loaded disk is a cleaning disk, using the lens driver to hold the optical lens at a predetermined height under the cleaning surface of the cleaning disk; and(4) using the motor to spin the cleaning disk and using the radial driver to move the optical lens to interact with the cleaning means on the cleaning surface for cleaning the optical lens even if focusing on the cleaning surface is failed and reading failure occurs.