INDEPENDENT BEACON BASED LIGHT POSITION SYSTEM

摘要

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.

主权项

1. A mobile device, comprising:
a rolling shutter camera; a wireless interface configured to communicate through a network over a wireless medium; a processor coupled to the rolling shutter camera 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 implement functions, including functions to: operate the rolling shutter camera to capture one or more images including: a first modulated visible light signal transmitted from a first visible light source and a second modulated visible light signal transmitted from a second visible light source; demodulate the first and second modulated visible light signals from the captured one or more images to obtain: first data carried in the first modulated visible light signal and second data carried in the second modulated visible light signal; from the obtained first and second data, determine a first identification of the first visible light source and a second identification of the second visible light source; and process the first and second identifications to determine a position of the mobile device.