Abstract: In a disc driving device that performs loading operation to transfer a disc, which is a disc-shaped storage medium, in its radial direction, and chucking operation to transfer the disc substantially in the direction of the thickness, the loading operation and the chucking operation are to be performed by a single driving source, and miniaturization and reduction in thickness or the like of the device are to be realized easily. The disc driving device has roller arm parts that sway parallel to the radial direction of a disc, a chucking arm part that sways substantially in the direction of the thickness of the disc, and a cam. The cam has a cam groove for regulating swaying of the roller arm parts so as to position the disc transferred in the radial direction at a predetermined position, and a cam groove for regulating swaying of the chucking arm part so as to transfer the disc situated at the predetermined position substantially into the direction of the thickness.

Abstract: Processing at high speed is realized. Interpolation is carried out between vertexes of a series of vertexes and a series of vertexes taken as a longer series of vertexes of a strip. Interpolation is then carried out between each vertex of the interpolated series of vertexes and corresponding vertexes. Sub-strips are then generated using each of the interpolated vertexes. In this way, processing can be carried out at high speed after finely subdividing.