Patent ID: 6754144
Filing Date: 2004-06-22
Classification: G11B

Abstract:
An optical information recording/reproducing apparatus for performing an operation of write or erase of information on an optical disc, comprising:means for irradiating an optical spot on said optical disc; means for controlling fluctuation in position of said optical spot, with respect to a track center on said optical disc, in a radial direction thereof; a first means for stopping the operation of the write or erase of information, if a fluctuation in position of said optical spot in the radial direction is equal or more than a first fluctuation amount and if a time period during when the positional fluctuation is equal or more than the first fluctuation amount is equal or longer than a first time period; and a second means for stopping the operation of the write or erase of information, if a fluctuation in position of said optical spot in the radial direction is equal or more than a second fluctuation amount and if a fluctuation time period during when the positional fluctuation is equal or more than the second fluctuation amount is equal or longer than a second time period.