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:
Jul. 21, 2015

Filed:

Mar. 30, 2012
Applicants:

Ming C. Hao, Palo Alto, CA (US);

Halldór Janetzko, Constance, DE;

Umeshwar Dayal, Saratoga, CA (US);

Meichun Hsu, Los Altos Hills, CA (US);

Daniel Keim, Steisslingen, DE;

Inventors:

Ming C. Hao, Palo Alto, CA (US);

Halldór Janetzko, Constance, DE;

Umeshwar Dayal, Saratoga, CA (US);

Meichun Hsu, Los Altos Hills, CA (US);

Daniel Keim, Steisslingen, DE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01); G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30994 (2013.01);
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.


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