Content delivery based on a light positioning system
First Claim
1. A method of commissioning a location-determination system utilizing information encoded in modulated light emitted by a plurality of light sources, each light source broadcasting an identifier via a light output modulated in accordance with a different time-varying signal so as to vary over time, the method comprising:
- (a) disposing an image sensor proximate a location of one of the light sources such that light from the light source at least partially illuminates the image sensor;
(b) acquiring an image of the light from the light source, different portions of the image being acquired at different times over a time interval, whereby the acquired image comprises a pattern of distortions resulting from interaction between the time-varying light output of the light source and the time interval of acquisition;
(c) decoding the pattern of distortions to recover the identifier of the light source;
(d) associating the identifier of the light source with the location of the light source in a database; and
(e) repeating steps (a)-(d) for each additional light source of the plurality of light sources.
2 Assignments
0 Petitions
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.
158 Citations
29 Claims
-
1. A method of commissioning a location-determination system utilizing information encoded in modulated light emitted by a plurality of light sources, each light source broadcasting an identifier via a light output modulated in accordance with a different time-varying signal so as to vary over time, the method comprising:
-
(a) disposing an image sensor proximate a location of one of the light sources such that light from the light source at least partially illuminates the image sensor; (b) acquiring an image of the light from the light source, different portions of the image being acquired at different times over a time interval, whereby the acquired image comprises a pattern of distortions resulting from interaction between the time-varying light output of the light source and the time interval of acquisition; (c) decoding the pattern of distortions to recover the identifier of the light source; (d) associating the identifier of the light source with the location of the light source in a database; and (e) repeating steps (a)-(d) for each additional light source of the plurality of light sources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A device for commissioning a location-determination system utilizing information encoded in modulated light emitted by a plurality of light sources, each light source broadcasting an identifier via a light output modulated in accordance with a different time-varying signal so as to vary over time, the device comprising:
-
an image sensor configured to acquire an image at least partially illuminated by light emitted by a light source, different portions of the image being acquired at different times over a time interval, whereby the acquired image comprises a pattern of distortions resulting from interaction between the time-varying light output and the time interval of acquisition; a processor for decoding the pattern of distortions to recover the identifier of the light source; a display for depicting at least a portion of a map of a space illuminated by the plurality of light sources, the map displaying the locations of the light sources (i) within the space and (ii) to be associated with identifiers recovered by the processor; and a communications module for communicating with a database, the database storing the identifiers of the light sources associated with locations of the light sources. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification