Visible light communication system and method for portable device

A technology of visible light communication and portable devices, applied in the field of optical communication, can solve the problems of extra chip cost and large electromagnetic radiation, and achieve the effect of low cost, high efficiency and broad application prospects

Inactive Publication Date: 2012-11-28
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a visible light communication system and method applied to portable devices, so a

Method used

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  • Visible light communication system and method for portable device
  • Visible light communication system and method for portable device
  • Visible light communication system and method for portable device

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Embodiment Construction

[0024] The invention utilizes the LED lights and light sensors configured in the existing portable devices to realize the visible light communication between the portable devices. For example, for mobile phones, the present invention can realize the wireless transmission and sharing of data between mobile phones by using the LED lamps and light sensors generally configured in existing mobile phones.

[0025] According to an embodiment of the present invention, the portable device is a smart phone, which includes an LED light and a light sensor, and also includes a central processing unit for controlling the LED light and the light sensor. In this embodiment, the LED light of one smart phone is used as a signal transmitting end, and the light sensor of the other smart phone is used as a signal receiving end. However, the present invention is not limited to be applied to smart phones, any portable device with LED lights or light sensors and a central processing unit capable of c...

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Abstract

The invention discloses a visible light communication system, which is used for data transmission between portable devices. The system comprises at least one first portable device (1) and at least one second portable device (2), wherein the first portable device at least comprises a light-emitting diode (LED) lamp (3); the on/off state of the LED lamp in a timing sequence refers to data to be transmitted; the second portable device at least comprises an optical inductor (4); the optical inductor can induce the on/off state of the LED lamp in the timing sequence so as to receive the data which refer to the on/off state; and the LED lamp can consist of a white light LED. According to the system, the configuration of the portable device is not required to be increased, and the highest data transmission rate can reach 1Gbits/s; and therefore, the visible light communication system has the advantages of low cost and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a visible light communication system and method for portable devices. The present invention can be applied to the communication among portable devices such as mobile phones, palmtop computers, tablet computers and notebook computers. Background technique [0002] White light LED (light emitting diode) has the advantages of high brightness, low power consumption, long life, etc., especially white light LED is a PN junction device composed of semiconductors, so the frequency response speed is high, the switching speed is fast, and it can turn on and off 10 times per second. 6 times, so the binary digits 0 and 1 can be passed. "High Data Rate Multiple Input Multiple Output (MIMO) Optical Wireless Communications Using White LED Lighting" by Lubin Zeng et al. (IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL.27, NO.9, DECEMBER 2009) discloses the use of...

Claims

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Application Information

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IPC IPC(8): H04B10/10H04B10/155H04B10/158
Inventor 朱邵歆闫建昌杨华张宁司朝曾建平李晋闽王军喜
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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