The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 26, 1999

Filed:

Mar. 14, 1997
Applicant:
Inventors:

Masayuki Suzuki, Tokyo, JP;

Seisuke Morioka, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T / ;
U.S. Cl.
CPC ...
345418 ;
Abstract

A polygon data sorting method and a polygon data sorting system is disclosed where the required memory capacity is not affected by changes in target data. The method sorts polygon data stored in an arbitrary order in an increasing or decreasing direction of a reference value which may be the depth of the polygon, for example. The polygon data is rearranged using the order of the reference values as an arrangement standard and includes the steps of dividing the reference values of the plurality of polygon data sets into upper digits and lower digits, registering values for the upper digits in an increasing or decreasing direction, registering the values for the upper digits and values at corresponding lower digits, and registering index numbers indicating positions where the stored polygon data reside. The polygon data may then be read in an order represented by the index numbers that correspond to the increasing or descending order of the values for the upper digits that are registered.


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