Music-Based Positioning Aided By Dead Reckoning

• US 20140372027A1
• Filed: 11/24/2013
• Published: 12/18/2014
• Est. Priority Date: 06/14/2013
• Status: Abandoned Application

• Current Assignee: Guobiao Zhang, Hangzhou Haicun Information Technology Co., Ltd.
• Original Assignee: Guobiao Zhang, Hangzhou Haicun Information Technology Co., Ltd.
• Inventors: ZHANG, GUOBIAO, WANG, BRUCE BING
• Application Number:
  US14/088,437
• Publication Number:
  US 20140372027A1
• Time in Patent Office: Days
• US Class Current: 701/500
• CPC Class Codes: G01C 21/14 by recording the course traversed by the object G01C21/16 takes precedence
• CPC Class Codes: G01C 21/1652 with ranging devices, e.g. LIDAR or RADAR
• CPC Class Codes: G01C 21/206 specially adapted for indoor navigation
• CPC Class Codes: G01C 22/006 Pedometers
• CPC Class Codes: G01S 5/18 using ultrasonic, sonic, or infrasonic waves
• CPC Class Codes: G01S 5/26 Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/28 takes precedence
• CPC Class Codes: G01S 5/30 Determining absolute distances from a plurality of spaced points of known location

Abstract

Music-based positioning (MP) provides positioning service only sporadically and therefore is not suitable for indoor positioning. The present invention discloses system and method for music-based positioning aided by dead reckoning (MP-DR). At each signature burst (i.e. a highly unique short musical segment suitable for positioning), musical sounds are used for positioning. Between signature bursts, positioning is performed by dead reckoning (DR). MP-DR is an ideal combination of MP and DR: DR extends temporal coverage for MP, while MP provides the much needed periodic calibrations for DR.

Claims

1. A mobile device, comprising:

an acoustic positioning (AP) module for positioning said mobile device using a signature burst, wherein said signature burst includes human consumable sounds suitable for positioning;

a dead-reckoning (DR) module for localizing said mobile device during an interval without signature burst.

2. The mobile device according to claim 1, wherein said human consumable sounds are sounds of an audio content.

3. The mobile device according to claim 2, wherein said audio content is music or human speech.

4. The mobile device according to claim 2, further comprising a memory for storing said audio content.

5. The mobile device according to claim 2, further comprising a memory for storing a signature-burst meta-data associated with said audio content.

6. The mobile device according to claim 1, wherein said human consumable sounds are simultaneously generated by at least two sound-transmitting devices.

7. The mobile device according to claim 1, wherein said signature burst has a correlativity higher than a pre-determined value.

8. The mobile device according to claim 7, wherein the correlativity of a burst is the ratio of the peak value and the root-mean-square (rms) value of the auto-correlation function of said burst.

9. The mobile device according to claim 1, wherein said AP module further comprises a correlating element for calculating a correlation function between received audio signals and transmitted audio signals.

10. The mobile device according to claim 9, wherein said AP module further comprises a sound-receiving element for converting said human consumable sounds into said received audio signals.

11. The mobile device according to claim 9, wherein said AP module further comprises a radio-receiving element for converting a radio signal into a replica of said transmitted audio signals.

12. The mobile device according claim 9, wherein said AP module further comprises an audio-synthesizing element for converting an audio content into a replica of said transmitted audio signals.

13. The mobile device according claim 9, wherein said AP module measures the time-of-flight or time-difference-of-flight of said received audio signals with respect to said transmitted audio signals.

14. The mobile device according to claim 1, wherein said DR module comprises at least an accelerometer, a compass and/or a gyroscope.

15. A mobile device, comprising:

a memory for storing a signature-burst meta-data associated with an audio content, wherein signature bursts include human consumable sounds suitable for positioning;

an acoustic positioning module for positioning said mobile device using a signature burst of said audio content.

16. The mobile device according to claim 15, wherein said audio content is music or human speech.

17. The mobile device according to claim 15, wherein said human consumable sounds are simultaneously generated by at least two sound-transmitting devices.

18. The mobile device according to claim 15, wherein said signature bursts have a correlativity higher than a pre-determined value.

19. The mobile device according to claim 18, wherein the correlativity of a burst is the ratio between the peak value and the root-mean-square (rms) value of the auto-correlation function of said burst.

20. The mobile device according to claim 15, further comprising a dead-reckoning module for localizing said mobile device during an interval without signature burst.