Optical disc having a plurality of recording layers, and recording method and reproducing method therefor

Abstract

An optical disc includes a plurality of recording layers, each layer having a lead-in area, a data area, and a lead-out area. A dedicated-reproducing area having a disc-related information zone, and a rewritable area are provided in at least one of the lead-in and lead-out areas of the optical disc. Accordingly, a reliability of a data recording/reproducing with respect to the optical disc is improved.

What is claimed is: 
     
       1. A reproducing apparatus, comprising:
 a reading unit to read data from an optical disc comprising a first recording layer and a second recording layer, the data comprising disc-related information for both the first recording layer and the second recording layer, and data for reproducing user data recorded in one or both of the first recording layer and the second recording layer; and 
 a controller to control the reading unit to read the disc-related information for both the first recording layer and the second recording layer and the data for reproducing the user data recorded in one or both of the first recording layer and the second recording layer; 
 wherein a lead in lead-in area included in the first recording layer includes comprises a dedicated-reproducing area in which the disc-related information for both the first recording layer and the second recording layers layer is recorded, a rewritable recordable area in which the data for reproducing the user data recorded in one or both of the first recording layer and the second recording layers layer is recorded, and a connection zone which is formed between the dedicated-reproducing area and the rewritable recordable area,; and 
 wherein a frequency of a wobble signal formed recorded in the dedicated-reproducing area is higher than a frequency of a wobble signal formed recorded in the rewritable recordable area. 
 
     
     
       2. The reproducing apparatus of  claim 1 , wherein the rewritable recordable area includes comprises a test zone, a disc control data zone, and a defect management zone. 
     
     
       3. The reproducing apparatus of  claim 2 , wherein the a defect management zone is formed provided in each of a first lead-out-area included in the first recording layer and a second lead-out area included in the second recording layer. 
     
     
       4. The reproducing apparatus of  claim 3 , wherein the first lead-in area, a first data area, and the first lead-out area, included in the first recording layer are arranged in the same order as a second lead-in area, a second data area, and the second lead-out area, included in the second recording layer, in a radial direction of the optical disc. 
     
     
       5. The reproducing apparatus of  claim 3 , wherein the first lead-in area, a first data area, and the first lead-out area, included in the first recording layer are arranged in the opposite order as the second lead-out area, the second data area, and a second lead-in area, included in the second recording layer, in a radial direction of the optical disc. 
     
     
       6. The reproducing apparatus of  claim 1 , wherein data included in the wobble signal are provided after being of the dedicated-reproducing area and the wobble signal of the recordable area comprise data modulated by at least one of a frequency modulation, an or amplitude modulation, a or phase modulation, a or minimum shift keying modulation and a, or saw tooth modulation, or any combination thereof. 
     
     
       7. The reproducing apparatus of  claim 1 , wherein at least one of the wobble signal of the dedicated-reproducing area and is recorded on wobble tracks having a first track pitch and the wobble signal of the rewritable recordable area is formed as recorded on wobble tracks having a second track pitch different from the first track pitches so as pitch to prevent crosstalk between the wobble tracks of the dedicated-reproducing area and the wobble tracks of the recordable area. 
     
     
       8. An optical disc comprising a first recording layer and a second recording layer, wherein:
 a lead in lead-in area included in the first recording layer includes comprises a dedicated-reproducing area in which disc-related information for both the first recording layer and the second recording layers layer is recorded, a rewritable recordable area in which data for reproducing user data recorded in one or both of the first recording layer and the second recording layers layer is recorded, and a connection zone which is formed between the dedicated reproducing dedicated-reproducing area and the rewritable recordable area; and 
 a frequency of a wobble signal formed recorded in the dedicated-reproducing area is higher than a frequency of a wobble signal formed recorded in the rewritable recordable area. 
 
     
     
       9. The reproducing apparatus of  claim 1 , wherein the disc-related information comprises information on the a size of the optical disc, and information on the a number of recording layers in the optical disc. 
     
     
       10. The optical disc of  claim 8 , wherein the disc-related information comprises information on the a size of the optical disc, and information on the a number of recording layers in the optical disc.