METHOD OF VISIBLE LIGHT COMMUNICATION USING ILLUMINANCE SENSOR AND MOBILE COMMUNICATION TERMINAL FOR THE SAME
0 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, a photo detector-combined illuminance sensor includes a circuit for a Photo Detector (PD) function to detect the illuminance of the ambient environment. The illuminance sensor operates under the control of a controller in a visible light communication terminal. When an optical signal detected by the illuminance sensor is a visible light communication signal, the controller switches to cause the illuminance sensor to operate as the photo detector for the visible light communication in a visible light communication mode.
4 Citations
40 Claims
-
1-20. -20. (canceled)
-
21. A method for performing a visible light communication in a mobile communication terminal, the method comprising:
-
receiving an optical signal and converting the optical signal to an electrical signal through a light receiving element; and controlling the terminal to operate in one of a visible light communication mode and a illuminance measurement mode based on the signal output from the light receiving element. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 33, 36, 37, 38, 39, 40)
-
-
29. A method for performing a visible light communication in a mobile communication terminal, the method comprising:
-
demodulating a signal outputted from an illuminance sensor based on a visible light communication scheme in a visible light communication mode; determining whether the output signal corresponds to a visible light communication signal using the demodulated data; and switching the visible light communication mode to an illuminance measurement mode for measuring an illuminance by the illuminance sensor based on determining that the output signal does not correspond to a visible light communication signal. - View Dependent Claims (30, 31, 34)
-
-
35. A method for performing a visible light communication in a mobile communication terminal, method comprising:
-
receiving an optical signal, converting the optical signal to an electrical signal and outputting the converted electrical signal through a light receiving element; determining whether a signal output from an illuminance sensor includes a visible light communication signal; and controlling the illuminance sensor to measure an illuminance based on determining that the signal output from the illuminance sensor is not the visible light communication signal.
-
Specification