Patent ID: 7082086

Claim:
A disk apparatus that rotates by a motor a disk recording medium in which a plurality of areas having optimum rotating speeds different to each other are allotted to a recording surface, and irradiates by an optical pick-up a laser beam to any one of said plurality of areas, comprising: a mover for moving, when a current area to which said laser beam is irradiated at this time and a desired area to which said laser beam is intended to be irradiated do not agree, said optical pick-up to a location corresponding to said desired area; a changer for changing, when said current area and said desired area do not agree, a rotating speed of said motor to the optimum rotating speed of said desired area; and a delayer for delaying, when a first time period required for moving said optical pick-up by said mover is shorter than a second time period required for changing said rotating speed by said changer, a start of moving said optical pick-up by said mover by a delayed time period that corresponds to a difference between said first time period and said second time period.