Patent ID: 6614736
Filing Date: 2003-09-02
Classification: G11B

Abstract:
An optical disc drive compatible with a plurality of types of optical discs different in recording density from each other, the apparatus comprising:means for writing and/or reading data to and/or from each of the plurality of types of optical discs; means for storing, for each of the plurality of types of optical discs, controlling conditions under which the data writing/reading means writes and/or reads data to and/or from each of the plurality of types of optical discs; and a disc discriminating means for determining the recording density of an optical disc to and/or from which the data writing/reading means is going to write and/or read data; the data writing/reading means acquiring, from the storing means, controlling conditions corresponding to the recording density of the optical disc, determined by the disc discriminating means, and writing and/or reading data to and/or from the optical disc under the acquired controlling conditions.