Importance

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Abstract

A page of an image is divided into several regions. Each of these regions may be compressed according to a different technique according to the kind of data within the region. Compression is used to reduce the memory requirements. Data for each region is available at any time and can be randomly accessed. Display operations may be processed in any order. For each display operation, the region which is affected is uncompressed and processed. As other regions are processed, memory space is made available by compressing data in currently unused regions. By using this kind of representation of a page and method of processing display operations, each region can be represented independently and differently. Because display operations can be processed in any order, regions may be processed by multiple imaging systems functioning in parallel. Additionally, representations of regions on a page can be stored, transmitted, or used in different locations at different times.

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First Claim