Patent · US Active

Overlaying transparency images including pixels corresponding to different heirarchical levels over a geographic map

US9087143B2 · kind B2 · utility

0Cited by

44References

15Claims

0Family size

Assignee

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. · US

Inventors

Ming C. Hao · Palo Alto, US
Halldor Janetzko · Konstanz, DE
Umeshwar Dayal · Saratoga, US
Meichun Hsu · Salem, US
Daniel Keim · Steißlingen, DE

Key dates

Filing date	Mar 30, 2012
Grant date	Jul 21, 2015
Priority date	—
Expiry date	Mar 1, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/904
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Data records contain corresponding values of an attribute and are associated with location information. Hierarchical levels of transparency images are generated, where each of the transparency images includes corresponding pixels that represent the respective data records, and where the transparency images at different ones of the hierarchical levels correspond to different zoom levels of a geographic map. At least one of the transparency images at a dynamically-selected one of the hierarchical levels is overlaid over the geographic map according to which of the zoom levels is selected by a user in zooming of the geographic map, where the at least one transparency image is automatically selected without user input.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.