Road map management system

Details Road map management system Road map management system

2006-07-27

2009-12-01

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

C701S208000, C701S211000, C342S064000

Reexamination Certificate

active

07627414

ABSTRACT:
A road map management system is provided as follows: drawing a past-direction distribution map (Image A) and a future-direction distribution map (Image B) using multiple vehicles' traveling position data collected via a wide area network during a past-direction data collection period and a future-direction data collection period, respectively; comparing the two distribution maps to extract a differential distribution; defining under a predetermined condition as a recently opened or closed road the differential distribution, which is absent from Image A and present in Image B, or present in Image A and absent from Image B, respectively; and reflecting the defined results on the existing road map data to update.

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