Disk reading/writing device and readable/writable disk
AssigneeSony Corporation
InventorsKatsuya Nakagawa, Yoshikazu Takahashi
Life of this patent
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Abstract
In a disk reading/writing device, a chucking mechanism holds two types of disks having different outer diameters. The chucking area of a small-diameter disk is set to be less than the chucking area of a large-diameter disk. The disks are focused by an optical pickup placed on the side opposite the chucking surface. This configuration makes it possible to enlarge the data area of the small-diameter disk and to perform reading and writing from and onto the small-diameter disk with an enlarged data area.
Claims4
A disk reading/writing device that chucks a plurality of types of large and small disks having different outer diameters, wherein a chucking mechanism is structured so that the chucking area of a small-diameter disk is less than the chucking area of a large-diameter disk, and said disks are focused by an optical pickup placed on the side opposite a chucking surface.
Dependencies are inferred from the claim text.