Structural graph display system

Details Structural graph display system Structural graph display system

1997-06-06

1999-07-13

Tung, Kee M.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345141, 345194, 345467, G09G 522

Patent

active

059233214

ABSTRACT:
The present invention provides a structural graph display system which utilizes index tables and index numbers to replace repeatedly occurred graphic parameters stored in a graphic description file so that overall memory requirement for storing the graphic description file can be substantially reduced. Within the graphic description file, a plurality of structural graphs are stored. Each structural graph comprises at least one sub-graph and each sub-graph contains a plurality of sub-graph parameters for drawing the sub-graph within a target area. One of the sub-graph parameters is defined as a target parameter. An index table of the target parameter is stored in the system which comprises a set of frequently used target parameters, an index number for each frequently used target parameter, and a special index number. In the graphic description file, each target parameter is changed according to the following rule: if the target parameter is one of the frequently used target parameters in the index table, it is replaced by a correspondent index number, or else it is replaced by the special index number plus the target parameter.

REFERENCES:
patent: 4990903 (1991-02-01), Cheng et al.
patent: 5852448 (1998-12-01), Cheng

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