Patent ID: 9577754
Date: 2017-02-21
CPC Classifications: H04B

Claim:
1. A nonradiative communication terminal using visible light for communication, comprising: a visible light emission module for emitting visible light; a visible light reception module for receiving the visible light and converting the visible light to an electrical signal; and a central processing unit for controlling working statuses of the visible light emission module and the visible light reception module and processing data transmitted from the visible light emission module and received by the visible light reception module, wherein the visible light emission module and the visible light reception module are respectively connected with the central processing unit; wherein the visible light emission module comprises a light emitting diode and a high-speed switch; and wherein a negative terminal of the light emitting diode is grounded, and a positive terminal of the light emitting diode is connected with a first end of the high-speed switch, and a second end of the high-speed switch and a controlling terminal of the high-speed switch are respectively connected with the central processing unit; wherein the visible light reception module comprises: a visible light reception unit for receiving the visible light and converting the visible light to the electrical signal; an amplifier unit for amplifying the electrical signal outputted from the visible light reception unit; and a comparator for performing a quantification operation on a signal from the amplifier unit; the visible light reception unit is connected to a negative input end of the comparator through the amplifier unit, and a positive input end of the comparator is connected with a voltage reference, and an output end of the comparator is connected with the central processing unit; wherein the visible light reception unit comprises a light sensitive diode and a first resistor; and wherein a negative terminal of the light sensitive diode is connected with a power supply end (VCC), and a positive terminal of the light sensitive diode is connected with the amplifier unit, and the positive terminal of the light sensitive diode is further grounded through the first resistor.