Patent ID: 7912377
Filing Date: 2011-03-22
Classification: H04B

Abstract:
1. A visible light communication apparatus for performing communication using visible light, the visible light communication apparatus comprising: a communication unit that performs communication with another communication apparatus; a state detector that detects a transmission rate of a signal transmitted over a transmission line between the visible light communication apparatus and the another communication apparatus; a controller that generates a first signal and a second signal based on the transmission rate detected by the state detector, the first signal indicating the transmission rate is decreased more than a given amount relative to an average transmission rate over a predetermined period, and the second signal including detailed information regarding the transmission rate; a modulator that modulates the first signal at a first frequency and modulates the second signal at a second frequency, the first frequency being lower than the second frequency; and a light emitting part that outputs the modulated first and second signals as visible light having first and second flashing patterns that are different from each other, the second flashing pattern providing said detailed information.