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:
Jun. 26, 2012

Filed:

Sep. 14, 2007
Applicants:

Hiroki Ishikawa, Okazaki, JP;

Kenji Nagase, Okazaki, JP;

Inventors:

Hiroki Ishikawa, Okazaki, JP;

Kenji Nagase, Okazaki, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08G 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A CPU specifies factors related to the month, the day of the week, and a time period including the current point in time, based on time data obtained by a timer. The CPU also specifies factors that are related to a grid ID and a road category of a given link, based on map display data, link data, and the like stored in an update map information database. The CPU then reads a sample collection number indicating the number of samples of probe information required to generate traffic information for that link and in sequence for other links. When a center traffic information DB contains stored therein, samples of probe information equal to or greater than the sample collection number for a link, the CPU generates the traffic information for that link and stores the generated traffic information as current traffic information.


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