Patent attributes
A disk apparatus includes: a kind discrimination unit for discriminating the kind of a loaded disk; a designation unit by which the user designates the prior order for discriminating the kind of the disk; and a frequency of use of storage unit for counting and storing a frequency of use of each kind of disks used in the past, wherein the kind discriminating unit is adapted to discriminate when the frequency of use of each kind of disk stored in the frequency of use storage unit exceeds a preset reference level indicating the predetermined tendency of use the kind of the disk in accordance with a priority order according to the tendency of use thereof, and discriminate when the tendency of use is not higher than the mentioned reference level the kind of the disk in the priority order designated by the designation unit.
