| 摘要 |
An image data storage system and an apparatus and a method for compressing image data including a map memory and a data memory. The map memory contains a plurality of memory regions while the data memory contains a plurality of memory areas. A pointer is stored in each memory region of the map memory, one pointer for each corresponding unit of input data. For units of input image data containing other than all "0"s, the data is stored in a corresponding image data region of the data memory. On the other hand, for all image units containing all "0"s (completely white), the pointers point to a single memory data in the data memory which contains all "0"s.
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