Patent ID: 7352676
Filing Date: 2008-04-01
Classification: G11B

Abstract:
1. A reproducing apparatus for an optical recording medium having a first recording layer for recording first data and a second recording layer for recording second data, the first and second recording layers being positioned adjacent to one another and the second data being recorded at a location in the second recording layer in proximity to a location in the first recording layer where first data relevant to the second data is recorded, the reproducing apparatus comprising: readout means for reading the first data as main data from the optical recording medium and for reading the second data as sub-data relevant to the main data from the optical recording medium, the readout means accessing from one recording layer to the other recording layer by shifting an objective lens in a non-radial direction on the optical recording medium within a field of view of the objective lens without moving a sled mounting the objective lens; reproducing means for generating replay signals based on the main data and the sub-data read by the readout means; and control means for controlling the readout means and the reproducing means.