Positioning/navigation system using identification tag and position/navigation method

• US 8,269,643 B2
• Filed: 08/11/2009
• Issued: 09/18/2012
• Est. Priority Date: 11/27/2008
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MStar Semiconductor Incorporated (MediaTek, Inc.)
• Inventors: Chou, Feng-Jian
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): Barakat, Mohamed
• Application Number:
  US12/538,917
• Publication Number:
  US 20100127883A1
• Time in Patent Office: 1,134 Days
• Field of Search: 340/686.1
• US Class Current: 340/686.1
• CPC Class Codes: G01S 1/68 Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
• CPC Class Codes: G01S 2205/02 Indoor
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236
• CPC Class Codes: G01S 5/0295 Proximity-based methods, e.g. position inferred from reception of particular signals

Abstract

A positioning navigation system using identification tags and a method thereof is provided. The system and method are applied to an area having a plurality of identification tags to position and navigate a mobile apparatus. The system includes a plurality of identification tags and a mobile apparatus. The method includes steps of accessing unique position data stored in at least one identification tag and generating position information of the mobile apparatus according to the unique position data stored in the at least one identification tag and a geographic data of the area. The unique position data of each identification tag corresponds to a coordinate position of the geographic data of each identification tag within the area.

Claims

1. A positioning and navigation method for utilizing a mobile apparatus and a plurality of identification tags deployed in an area, wherein each identification tag has a position data, said method comprising steps of:

accessing position data of a first identification tag in a first radio frequency (RF) of the identification tags; and

generating position information of the mobile apparatus according to the position data of the first identification tag and a geographic data of the area;

wherein, the position data of each identification tag represents a coordinate location of each identification tag in the geographic data of the area; and

wherein the step of accessing the position data of the first identification tag of the identification tags comprises;

detecting a second identification tag in a second radio frequency; and

if the second identification tag is present, accessing the position data of the second identification tag ;

otherwise, accessing the position data of the first identification tag;

wherein the first radio frequency is ultra high frequency (UHF) band, and the second radio frequency is high frequency (HF) band.

2. The positioning and navigation method as claimed in claim 1, wherein the plurality of identification tags comprise said first identification tag in said first radio frequency and a second identification tag in a second radio frequency.

3. The positioning and navigation method as claimed in claim 1, wherein the step of generating the position information of the mobile apparatus according to the position data of the first identification tag and the geographic data of the area, further comprises:

accessing a third identification tag in said first radio frequency;

obtaining an average for the position data of the first identification tag and the third identification tag; and

setting the average as position information of the mobile apparatus.

4. The positioning and navigation method as claimed in claim 1, further comprising:

generating navigation information according to a predetermined destination data, the position information of the mobile apparatus, and the geographic data;

generating indication information according to the navigation information; and

generating one of image, audio and video instruction according to the indication information.

5. The positioning and navigation method as claimed in claim 1, further comprising:

if only the position data of the first identification tag is accessed, generating a route to move the mobile apparatus to a predetermined route according to the position data of the first identification tag, the predetermined route, and the geographic data of the area;

wherein the predetermined route is comprised by the second identification tag.