Multi-layered recording medium, and method and apparatus for recording data

Abstract

A multi-layered recording medium, and a method and apparatus for recording data in the recording medium are disclosed. A multi-layered recording medium, each of which includes an inner area, a data area, and an outer area, includes: first layer having at least a test area assigned to the inner area; and second layer having at least a management area assigned to the inner area, wherein the test area in the first layer is not physically located at the same location as the management area assigned to the second layer adjacent to the first layer with respect to an incident beam.

1 . A multi-layered recording medium, each of which includes an inner area, a data area, and an outer area, comprising:
 a first layer having at least a first test area and a control information area assigned to the inner area, the control information area being embossed in the form of wobbles; and   a second layer having at least a second test area assigned to the inner area,   wherein the control information area in the first layer is physically located at the same location partially or entirely as the second test area in the second layer with respect to the incident beam.   
   
   
       2 . The recording medium according to  claim 1 , wherein the first and second test areas are an Optimum Power Control (OPC) area for each layer. 
   
   
       3 . The recording medium according to  claim 1 , wherein the first test area in the first layer is not physically located at the same location partially or entirely as the second test area in the second layer with respect to the incident beam. 
   
   
       4 . The recording medium according to  claim 1 , wherein the data area in the second layer is not physically located at the same location partially or entirely as the first test area in the first layer with respect to the incident beam. 
   
   
       5 . The recording medium according to  claim 1 , wherein the second layer further includes a reserved area, the reserved area in the second layer is physically located at the same location partially or entirely as the first test area in the first layer with respect to the incident beam. 
   
   
       6 . The recording medium according to  claim 1 , wherein the second layer further includes a buffer zone, the buffer zone in the second layer is physically located at the same location partially or entirely as the first test area in the first layer with respect to the incident beam. 
   
   
       7 . The recording medium according to  claim 1 , wherein the recording medium is a write-once Blu-ray Disc Recordable (BD-R). 
   
   
       8 . A method of recording data in a multi-layered recording medium, each of which includes an inner area, a data area, and an outer area, comprising:
 a) testing a record power in a first test area of a first layer or a second test area of a second layer, and determining an optimum record power; and   b) recording data at the determined optimum record power,   wherein a control information area embossed in the form of wobbles in the first layer is physically located at the same location partially or entirely as the second test area in the second layer with respect to the incident beam.   
   
   
       9 . The method according to  claim 8 , wherein the first and second test area are an Optimum Power Control (OPC) area to record a test data in order to determine the optimum record power, and
 wherein the testing step includes recording the test data in the first test area or the second test area.   
   
   
       10 . An apparatus for recording data in a multi-layered recording medium, each of which includes an inner area, a data area, and an outer area, comprising:
 a pickup unit configured to record data in the recording medium; and   a control unit configured to control the pickup unit to test a record power in a first test area of a first layer or a second test area of a second layer, to control to determine an optimum record power based on the test, and to control the pickup unit to record data at the determined optimum record power,   wherein a control information area embossed in the form of wobbles in the first layer is physically located at the same location partially or entirely as the second test area in the second layer with respect to the incident beam.   
   
   
       11 . The apparatus according to  claim 10 , wherein the first and second test areas are an Optimum Power Control (OPC) area to record a test data in order to determine the optimum record power, and
 wherein the controller is configured to control the pickup unit to determine the optimum record power by recording the test data.   
   
   
       12 . The apparatus according to  claim 10 , wherein the controller is configured to control the pickup unit to test the recording power in the first test area of the first layer, and the first test area of the first layer is located at the same location partially or entirely as a reserved area of the second layer with respect to the incident beam.