Patent ID: 8149666
Filing Date: 2012-04-03
Classification: G11B

Abstract:
1. An optical disc apparatus comprising: a motor for rotating an optical disc loaded; a light source for emitting a light beam; a lens for converging the light beam onto the optical disc; and a control section for controlling the operations of the motor, the light source, and the lens, the control section performing read/write preprocessing before starting to read or write data from/on the optical disc, wherein the control section includes a disc type recognizing section for determining, by irradiating the optical disc with the light beam using the light source and the lens, whether the optical disc loaded is a first type, of which the number of information storage layers is less than a setting T (where T is an integer that is greater than two), or a second type, of which the number of information storage layers is equal to or greater than the setting T, and wherein the control section determines the read/write preprocessing depending on whether the optical disc loaded has turned out to be the first type or the second type.