METHOD AND APPARATUS FOR USING MAP INFORMATION AIDED ENHANCED PORTABLE NAVIGATION

• US 20160069690A1
• Filed: 09/04/2015
• Published: 03/10/2016
• Est. Priority Date: 09/08/2014
• Status: Active Grant

• Current Assignee: Invensense Incorporated (TDK Corporation)
• Original Assignee: Invensense Incorporated (TDK Corporation)
• Inventors: Georgy, Jacques, Li, Tao, Wang, Da
• Granted Patent: US 9,797,732 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 21/005 with correlation of navigation data from several sources, e.g. map or contour matching G01C21/30 takes precedence
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: G01C 21/206 specially adapted for indoor navigation
• CPC Class Codes: G01C 21/30 Map- or contour-matching
• CPC Class Codes: G01S 19/49 whereby the further system is an inertial position system, e.g. loosely-coupled
• CPC Class Codes: G01S 5/017 Detecting state or type of motion

Abstract

This disclosure is directed to enhancing the navigation solution of a portable device using map information. Sensor data for the portable device may be used to derive a navigation solution. Position information for the device may be estimated using the navigation solution. Map information for an area encompassing a current location of the user may also be obtained. Multiple hypotheses regarding possible positions of the portable device may be generated using the estimated position information and the map information. By managing and processing the hypotheses, updated estimated position information may be provided. The updated estimated position information may be provided as output or feedback to enhance the navigation solution.

Claims