Patent ID: 7110336
Filing Date: 2006-09-19
Classification: G11B

Abstract:
1. A method for setting an optimum value of a write parameter for use in an optical recording apparatus for writing information on an optical recording medium by means of a radiation beam, the method comprising the steps of: writing a series of test patterns on the recording medium, each pattern being written with a different value of a write power level (P) of the radiation beam; reading the patterns so as to form corresponding read signal portions; and deriving a value of a read parameter from each read signal portion, characterized in that the method further comprises the steps of: curve-fitting a function defining a relation between the read parameter and the write power level (P) to the values of the read parameter and of the write power level (P); and setting an optimum value of the write parameter in dependence on a property of the curve-fitted function, characterized in that in the curve-fitting step, a function represented by a substantially straight line is curve-fitted to the values of the read parameter and of the write power level (P).