Patent ID: 8780681
Filing Date: 2014-07-15
Classification: G11B

Abstract:
1. A recording device to perform recording on an optical disc recording medium having a reference face having a reflection film provided with a position guide, and having a recording layer provided at a position of a depth different from that of the reference face and configured to perform information recording by forming marks according to irradiation of light, the recording device comprising: a light generating and irradiating unit configured to generate an object lens to which the first, second, and third light beams are incident, a recording unit, configured to perform light emission driving control for the first light beam to perform mark recording on the recording layer; a tracking mechanism, configured to drive the object lens in a tracking direction that is parallel to the radial direction of the optical disc recording medium; a first tracking error signal generating unit, configured to generate a first tracking error signal based at least in part on a result of receiving reflection light of the second light beam from the reference face; a second tracking error signal generating unit, configured to generate a second tracking error signal based at least in part on a result of receiving reflection light of the third light beam from the recording layer; a tracking servo control unit, configured to perform tracking servo control on the object lens by driving the tracking mechanism based at least in part on the first or second tracking error signal; and a control unit, wherein the control unit: