Bisdiisobutoxytitanium or bis-di(2,2-dimethyl-l-propoxytitanium per se, or as used as a raw material in a MOCVD process, as is or as a solution in an organic solvent, for example, tetrahydrofuran, produces a dielectric thin film of a fine texture having a film thickness which is proportional to the deposition time and the concentration of the solution. If the amount of data is the predetermined amount or greater, the compressed image data is decompressed, and the image data is again compressed with a lower resolution, thereby reducing the amount of data to less than the predetermined amount. An impact protector overlies at least a portion of the outer surface of the housing and shields the underlying housing surface from the force of a mechanical impact. A semiconductor device including silicon on insulator regions, strained silicon layer, shallow trench isolation structures, and bulk silicon regions is provided on a single semiconductor substrate. On the other hand, if the host instructs the storage device not to transmit a processing completion notification, the storage device does not transmit the completion notification to the host. The height of the mini-disk bits is selected to be such that their individual virtual rolling paths together form a virtual cutting roller body, which comprises a middle cylinder, which is joined on both sides by outwardly tapering frusta.