Invention Grant
- Patent Title: Nearest-neighbor geographic search
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Application No.: US11852973Application Date: 2007-09-10
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Publication No.: US07882102B2Publication Date: 2011-02-01
- Inventor: Alexander Vechersky
- Applicant: Alexander Vechersky
- Applicant Address: TW Kuei San Hsiang, Taoyuan
- Assignee: Mitac International Corporation
- Current Assignee: Mitac International Corporation
- Current Assignee Address: TW Kuei San Hsiang, Taoyuan
- Agent Winston Hsu; Scott Margo
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/30

Abstract:
Disclosed herein is a method and apparatus for use in searching a geographic database to retrieve geographic objects one cell from a neighborhood of cells at a time. A cell neighborhood can be defined using a grid of cells and an initial, or center, point. A first neighborhood is identified based on its proximity to the initial search point, and corresponds to a first geographic area defined using the initial point and a distance from the initial search point in a number of directions. In a case that more than one cell neighborhood is used, each subsequent cell neighborhood is defined so that it excludes cells belonging to a previously-searched cell neighborhood. A subsequent neighborhood corresponds to a geographic area that is a distance from the initial point greater than the distance associated with a previously-searched neighborhood.
Public/Granted literature
- US20090070293A1 Nearest-Neighbor Geographic Search Public/Granted day:2009-03-12
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