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.
Patent No.:
Date of Patent:
Apr. 14, 2009
Filed:
Nov. 27, 2002
Eric G. Parker, Wylie, TX (US);
Eric G. Parker, Wylie, TX (US);
Zyvex Labs, LLC, Richardson, TX (US);
Abstract
In one embodiment, the present invention is directed to a data structure for representing a spatial region. The data structure comprises a hierarchical arrangement of nodes associated with a plurality of refinement levels, wherein each node of the hierarchical arrangement of nodes is a regular spatial subdivision of the spatial region or another node that is associated with a preceding refinement level. The hierarchical arrangement of nodes forms a directed acyclic graph. The hierarchical arrangement of nodes comprises at least two nodes that have respective edges that are traversed to a common child node such that the hierarchical arrangement of nodes does not comprise a repeated pattern from any two nodes of a common refinement level of the data structure.