Patent ID: 7916588
Filing Date: 2011-03-29
Classification: G11B

Abstract:
1. A control apparatus for controlling an access means for accessing a recording medium, the recording medium having a plurality of recording layers, the recording medium including an area for reproduction adjustment in which a recorded area for adjusting a control parameter is formed, an OPC area for performing a trial recording, and a defect management area for recording a defect management information, at least one area for reproduction adjustment and at least one OPC area being included in each of the plurality of recording layers, the control apparatus comprises: a determining means for determining whether or not the recorded area is included in the area for reproduction adjustment included in each of the plurality of recording layers, and a control means, wherein when the determining means determines that the recorded area is included in the area for reproduction adjustment in a predetermined one recording layer of the plurality of recording layers, the control means is configured to control the access means to access the area for reproduction adjustment in the predetermined one recording layer, measure a reproduction indicator of a signal obtained from the area for reproduction adjustment in the predetermined one recording layer, adjust the control parameter for the predetermined one recording layer based on the measuring result, and control the access means in the predetermined one recording layer based on the adjusting result, and when the determining means determines that the recorded area is not included in the area for reproduction adjustment in the predetermined one recording layer of the plurality of recording layers, the control means is configured to control the access means such that the access means records an area for OPC adjustment for performing an adjustment of the control parameter on the OPC area in the predetermined one recording layer, control the access means such that the access means accesses the area for OPC adjustment in the predetermined one recording layer which is recorded by the access means, measure the reproduction indicator of a signal obtained from the area for OPC adjustment in the predetermined one recording layer, perform an adjustment of the control parameter for the predetermined one recording layer based on the measuring result, and control the access means in the predetermined one recording layer based on the adjusting result.