Independent beacon based light position system
First Claim
1. A mobile device, comprising:
- an image sensor;
a wireless interface configured to communicate through a network over a wireless medium;
a processor coupled to the image sensor and the wireless interface;
a memory; and
software in the memory to be run by the processor, wherein running of the software by the processor configures the mobile device to perform functions, including functions to;
operate the image sensor to capture an image of at least two visible light sources in an indoor location including a modulated visible light signal transmitted by one of the at least two visible light sources of an indoor location;
using the captured image, demodulate the modulated visible light signal transmitted by the one visible light source;
based on the demodulated visible light signals, determine a light source identifier corresponding to the one visible light source;
retrieve position information corresponding to the determined light source identifier, the retrieved position information including position coordinates in three dimensions of the one light source corresponding to the light source identifier and of other light sources; and
calculate, by applying photogrammetric image processing techniques to the image of the at least two light sources and the position coordinates of the at least two light sources, coordinates for a position of the mobile device relative in the indoor location.
2 Assignments
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Accused Products
Abstract
Systems an methods are provided that disclose providing a positioning service for devices based on light received from one or more light sources. This light based positioning service uses light information transmitted by each light source to determine the position of the device. The positioning information can include three dimension position information in a building that can then be used to deliver services and information to a mobile device. The content delivered to a mobile device can include multimedia, text, audio, and/or pictorial information. The positioning information along with other location or positioning information can be used in providing augmented reality or location aware services. The light sources can be independent beacons that broadcast information in visible light at a rate that is undetectable by the human eye. Content can be retrieved from a server over a communications connection.
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Citations
20 Claims
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1. A mobile device, comprising:
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an image sensor; a wireless interface configured to communicate through a network over a wireless medium; a processor coupled to the image sensor and the wireless interface; a memory; and software in the memory to be run by the processor, wherein running of the software by the processor configures the mobile device to perform functions, including functions to; operate the image sensor to capture an image of at least two visible light sources in an indoor location including a modulated visible light signal transmitted by one of the at least two visible light sources of an indoor location; using the captured image, demodulate the modulated visible light signal transmitted by the one visible light source; based on the demodulated visible light signals, determine a light source identifier corresponding to the one visible light source; retrieve position information corresponding to the determined light source identifier, the retrieved position information including position coordinates in three dimensions of the one light source corresponding to the light source identifier and of other light sources; and calculate, by applying photogrammetric image processing techniques to the image of the at least two light sources and the position coordinates of the at least two light sources, coordinates for a position of the mobile device relative in the indoor location. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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operating an image sensor of the mobile device to capture an image of at least two visible light signals in an outdoor location including a modulated visible light signal transmitted by at least two visible light source of an indoor location; demodulating the modulated visible light signal transmitted by one of the at least two visible light source using the captured image; determining a light source identifier corresponding to the one of at least two visible light source based on the demodulated visible light signals; retrieving position information corresponding to the determined light source identifier, the retrieved position information including position coordinates in three dimensions of the one light source corresponding to the light source identifier and of other light sources; and calculating, by applying photogrammetric image processing techniques to the image of the at least two light sources and the position coordinates of the three light sources, coordinates for a position of the mobile device relative in the indoor location. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A non-transitory tangible computer readable medium embodying instructions to cause a mobile device to perform functions, including functions to:
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operate an image sensor of the mobile device to capture an image of at least two visible light signal in an outdoor location including a modulated visible light signal transmitted by one of at least one visible light source of an indoor location; demodulate the modulated visible light signal transmitted by the one of the at least two visible light source using the captured image; determine a light source identifier corresponding to the one visible light source based on the demodulated visible light signals; retrieve position information corresponding to the determined light source identifier, the retrieved position information including position coordinates in three dimensions of the one light source corresponding to the light source identifier and of other light sources; and calculate, by applying photogrammetric image processing techniques to the image of the at least two light sources and the position coordinates of the at least two light sources, coordinates for a position of the mobile device relative in the indoor location. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification