Mobile device indoor navigation
First Claim
1. A method for indoor navigation in a venue comprising:
- receiving through a microphone of a mobile device an audio signal, the microphone capturing sound in the venue in a frequency range including a frequency range of human hearing;
determining a position of the mobile device in the venue based on identification of the audio signal by processing the audio signal to detect distinguishing audio characteristics of similar sounding audio from plural different audio sources, identifying plural different audio sources from the distinguishing audio characteristics, obtaining positions of the different audio sources, and calculating the position of the mobile device based on the positions of the audio sources;
monitoring the position of the mobile device;
outputting a position based alert on an output device of the mobile device when the position of the mobile device is within a pre-determined position associated with the position based alert.
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Accused Products
Abstract
A method for indoor navigation in a venue derives positioning of a mobile device based on sounds captured by the microphone of the mobile device from the ambient environment. It is particularly suited to operate on smartphones, where the sounds are captured using microphone that captures sounds in a frequency range of human hearing. The method determines a position of the mobile device in the venue based on identification of the audio signal, monitors the position of the mobile device, and generates a position based alert on an output device of the mobile device when the position of the mobile device is within a pre-determined position associated with the position based alert.
70 Citations
35 Claims
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1. A method for indoor navigation in a venue comprising:
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receiving through a microphone of a mobile device an audio signal, the microphone capturing sound in the venue in a frequency range including a frequency range of human hearing; determining a position of the mobile device in the venue based on identification of the audio signal by processing the audio signal to detect distinguishing audio characteristics of similar sounding audio from plural different audio sources, identifying plural different audio sources from the distinguishing audio characteristics, obtaining positions of the different audio sources, and calculating the position of the mobile device based on the positions of the audio sources; monitoring the position of the mobile device; outputting a position based alert on an output device of the mobile device when the position of the mobile device is within a pre-determined position associated with the position based alert. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for indoor navigation in a venue comprising:
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a configuration of audio sources, each transmitting a uniquely identifiable audio signal corresponding to a location; one or more computers for receiving audio detection events from mobile devices in the venue, the detection events providing identifying information that distinguishes similar sounds in audio captured through a microphone of a mobile device from different audio sources in the venue and calculating mobile device location from the detection events, monitoring position of the mobile devices at the venue, and sending an alert to the mobile devices when the position of the mobile devices is at a position associated with the alert; wherein calculating the mobile device location further comprises identifying plural different audio sources from the audio detection events, obtaining positions of the different audio sources, and calculating the position of the mobile device based on the positions of the audio sources. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A non-transitory computer readable medium, on which is stored instructions, which when executed by a computer, perform a method for indoor navigation comprising:
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detecting audio source identifying information from an audio signal captured on a microphone; providing the source identifying information to a process for computing position of a mobile device in a venue, the source identifying information identifying plural different audio sources from the audio signal captured on the microphone; and generating a position based alert on an output device of the mobile device when the position of the mobile device is within a pre-determined position associated with the position based alert in the venue; wherein computing position of the mobile device further comprises detecting distinguishing audio characteristics of similar sounding audio from the plural different audio sources, obtaining positions of the plural different audio sources, and calculating the position of the mobile device based on the positions of the plural different audio sources. - View Dependent Claims (32, 33)
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34. A non-transitory computer readable medium, on which is stored instructions, which when executed by a computer, perform a method for indoor navigation comprising:
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receiving audio source identifying information detected in audio captured from a microphone of a mobile device, the source identifying information identifying plural different audio sources from the audio signal captured on the microphone; obtaining positions of the different audio sources; computing position of a mobile device in a venue based on the positions of the audio sources; and generating a position based alert for output on the mobile device when the position of the mobile device is within a pre-determined position associated with the position based alert in the venue. - View Dependent Claims (35)
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Specification