In-building navigation system
First Claim
1. A navigation system comprising:
- at least one light source including a driver and an encoder, the driver and the encoder coupled to the light source so that the light source produces a modulated light signal in accordance with a predetermined signature;
a receiver including a photosensitive detector capable of detecting the modulated light signal and a decoder capable of decoding the predetermined signature;
a memory;
a controller communicatively coupled to the receiver and the memory; and
an output device coupled to the controller, wherein the controller is arranged to receive the decoded predetermined signature, based upon the decoded predetermined signature, obtain at least one navigation instruction stored in the memory, and output the navigation instruction using the output device.
4 Assignments
0 Petitions
Accused Products
Abstract
A navigation system is disclosed including a light source having a driver and an encoder. The driver and the encoder are coupled to the light source so that the light source produces a modulated light signal in accordance with a predetermined signature. The system also includes a receiver having a photosensitive detector capable of detecting the modulated light signal and a decoder capable of decoding the predetermined signature. A controller is communicatively coupled to the receiver, a memory and output device. The controller is arranged to receive the decoded predetermined signature, based upon the decoded predetermined signature, obtain at least one navigation instruction stored in the memory, and output the navigation instruction using the output device.
9 Citations
17 Claims
-
1. A navigation system comprising:
-
at least one light source including a driver and an encoder, the driver and the encoder coupled to the light source so that the light source produces a modulated light signal in accordance with a predetermined signature;
a receiver including a photosensitive detector capable of detecting the modulated light signal and a decoder capable of decoding the predetermined signature;
a memory;
a controller communicatively coupled to the receiver and the memory; and
an output device coupled to the controller, wherein the controller is arranged to receive the decoded predetermined signature, based upon the decoded predetermined signature, obtain at least one navigation instruction stored in the memory, and output the navigation instruction using the output device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A receiver comprising:
-
a photosensitive detector capable of detecting a modulated light signal;
a decoder capable of decoding a predetermined code from the modulated light signal;
a memory;
a controller communicatively coupled to the receiver and the memory; and
an output device coupled to the controller, wherein the controller is arranged to receive the decoded predetermined signature, based upon the decoded predetermined signature, obtain at least one navigation instruction stored in the memory, and output the navigation instruction using the output device. - View Dependent Claims (13, 14, 15, 16)
-
-
17. A navigation system comprising:
-
means for producing at least one light signal having a signature;
means for decoding the signature from the light signal;
means for providing a navigation instruction in accordance with the signature.
-
Specification