| 摘要 |
A scanner is provided with encoding means for performing variable-length compression of scanned image data, memory means which is partitioned into an image memory area where the image data compressed to be variable-length is stored, and an administration table area where a BAT for administrating the image memory area is stored, in which the image memory area is partitioned into PMs made to correspond to each of bands 0 to 3 into which a document plane is divided at every predetermined width in a horizontal direction, and one or more EPMs allocatable to one of the bands 0 to 3, and image data processing means for storing compressed image data belonging to the bands 0 to 3, in the respective PMs 0 to 3, for storing the image data in sequence in the EPMs needed when compressed image data to be stored is greater than the PMs, and for setting identification information denoting the used EPMs as jump information of an administration table.
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