Patent ID: 7596065
Filing Date: 2009-09-29
Classification: G11B

Abstract:
1. An optical recording and reproducing device for performing test recording on a predetermined area of an optical disk with a record power of a various values, and thereby determining an optimum record power based on a quality of a reproduction signal of record data, comprising: a portion measuring a modulation degree of said test record data; a portion calculating a target modulation degree based on a coefficient related to a record power and included in ADress In Pre-groove (ADIP) information of said optical disk; and a portion determining the record power exhibiting the measured modulation degree matching with the target modulation degree as the optimum record power, wherein said portion calculating said target modulation degree calculates said target modulation degree by performing an arithmetic operation with a predetermined parameter on an estimated value (Pind) of the target record power related to the record power and included in the ADress In Pre-groove (ADIP) information of said optical disk, and said optical disk further includes a target γ value in said ADress In Pre-groove (ADIP) information.