| 摘要 |
<p>A large-frame image (21) is divided into image pieces (23) each having a predetermined two-dimensional size, and the image pieces are divisionally stored in a plurality of optical disk devices (22-1 through 22-4) which can be parallelly accessed. Each disk stores division management information (an array position of each image piece on the large-frame image, and pointer information (optical disk number, and optical disk track number) indicating a storage position in the optical disk). A CPU (11) generates a storage destination information table in a main memory (15) in accordance with the division management information stored in each disk device. The storage destination information table represents a storage destination of each image piece in correspondence with its two-dimensional array position on the large-frame image. The CPU designates an access destination in units of disk devices, and simultaneously issues an access request to parallelly read out unit images.</p> |
