Methods and Devices for Transmitting/Obtaining Identification Information and Positioning by Visible Light Signal

摘要

The present invention discloses methods and devices for transmitting/obtaining identification information and positioning by visible light signal. The method for transmitting identification information of a light source by visible light signal, the method comprising: modulating, on the basis of the identification information to be transmitted, a driving signal of the light source to obtain a modulated driving signal for driving the light source to emit visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points; and emitting the visible light signal having its level changed between a peak level and a bottom level with varied frequencies at different time points on the basis of the modulated driving signal, so as to transmit identification information corresponding to the varied numbers of bright or dark stripes shown in one or more images obtained from the visible light signal at one or more time points, which numbers are corresponding to the varied frequencies.

主权项

1. A method for transmitting identification information of a light source by a visible light signal, the method comprising:
modulating, on the basis of the identification information to be transmitted, a driving signal of the light source to obtain a modulated driving signal for driving the light source to emit the visible light signal having the visible light signal's level changed between a peak level and a bottom level with varied frequencies at different time points; and emitting the visible light signal having the visible light signal's level changed between a peak level and a bottom level with varied frequencies at different time points on the basis of the modulated driving signal, so as to transmit identification information corresponding to varied numbers of bright or dark stripes shown in one or more images obtained from the visible light signal at one or more time points, which numbers are corresponding to the varied frequencies.