| 摘要 |
PURPOSE:To speed up an access by previously preparing both a magnetic disk and an optical one and allowing a data management note managing image data to automatically select an optimum image data storage medium at the time of access. CONSTITUTION:A data processor 20 processing data by causing a CPU to execute the prescribed instruction is composed of an application processing part 21 executing the processing required by a user through the use of image data, an image data access part 22 and a data base management part 29, and has the magnetic disks 12 and 14 and the optical disk 15. For processing an access medium selection part, the access part 22 executed said processing according to the access request from the application processing part 21, while an optical disk storage processing part 30 in the control part 29 processes an optical disk updating part. Thus image data frequently referred is provisionally stored on the optical disk 15, and temporarily loaded on th magnetic disk 14 as necessary, whereby data is efficiently used and accessed at high speed.
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