Patent ID: 7924667

Claim:
A method for controlling a write speed of a recording and/or reproducing apparatus, comprising: measuring a medium quality evaluating factor affecting a servo control performance in a plurality of areas of a medium; determining respective optimal write speeds for the plurality of areas of the medium based on a respective medium quality evaluating factor; storing the respective optimal write speeds for the plurality of areas of the medium in a memory; and controlling, in a writing mode, a rotation speed of the medium at an optimal write speed, from the determined optimal write speeds read from the memory, for a corresponding area of the medium, of the plurality of areas, to which writing is to be performed wherein if the medium is a multilayer disk, corresponding optimal write speeds for innermost and outermost perimeter areas of the medium are determined so as to be lower than a standard write speed, determined during a design/manufacturing stage or outside of the writing mode of the recording and/or reproducing apparatus, by a predetermined write speed, and corresponding optimal write speeds in other areas of the disk are optimally determined based on the medium quality evaluating factor.