05638498 is referenced by 216 patents and cites 20 patents.

A method and apparatus for reducing storage requirements for display data on a computer system. Data objects to be displayed are organized into display lists and each data object includes an object type, such as text, graphic, and image. The data objects are rasterized into an uncompressed band buffer and divided into non-intersecting bitmap regions each identified with one or more object types. Each non-empty region is assigned a compression algorithm dependent upon the type of the region and specified compression constraints. The regions are combined with each other into larger regions if appropriate, and each region is compressed using its assigned compression algorithm into a compressed band buffer, thus reducing the required storage space for the data objects. The compressed data is decompressed in scan line order with a selected decompression algorithm corresponding to the assigned compression algorithms to produce uncompressed output data. The uncompressed output data is supplied to an output display device for display.

Title
Method and apparatus for reducing storage requirements for display data
Application Number
974204
Publication Number
5638498
Application Date
June 7, 1995
Publication Date
June 10, 1997
Inventor
Ronald S Gentile
Atherton
CA, US
Richard N Fall
Palo Alto
CA, US
Soon Y Kong
Cupertino
CA, US
Nicholas J Foskett
Mountain View
CA, US
William B Tyler
Carmel
CA, US
Agent
Fish & Richardson P C
Assignee
Adobe Systems Incorporated
CA, US
IPC
G06K 15/00
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