Patent ID: 8752761
Filing Date: 2014-06-17
Classification: G01C,G01S

Abstract:
1. A system for locationing of a mobile device within an environment, the system comprising: light sources disposed within the environment and modified to provide a plurality of unique identity patterns, one identity for each light source, each unique identity pattern is associated with a particular location within the environment; an accelerometer disposed in the mobile device, the accelerometer operable to detect gravity vectors of the mobile device; a camera and image processor disposed within the mobile device and operable to obtain images from the camera, the camera operable to capture an image of a modified light source, and the image processor operable to recognize the unique identity pattern of the modified light source and a horizontal angle and a vertical angle of a position of the light source in the image from a center position of the image; and a locationing engine operable to determine a location of the mobile device within the environment using the unique identity pattern, the gravity vectors, and the horizontal and vertical angles.