A portable multimedia information device in a wireless optical data link

Author

Pang, Grantham ; Poon, Gordon

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., China

Volume

47

Issue

1

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

87

Lastpage

95

Abstract

This paper describes implementation of a information device that receives information from a free space optical data link established using visible light LEDs. The visible light, which is transmitted from a transmitter made up of LEDs, is modulated and encoded with data and information. The portable receiver is consisted of a demodulation circuit and an interface to a handheld PC. Software applications have also been developed on this hardware platform so that the mobile PC device can receive data, audio and graphics through the visible light from the transmitter, which is located at some distance from the device. With the high frequency switching of the LEDs, the transmitter appears to be constantly illuminated

Keywords

data communication; demodulation; light emitting diodes; multimedia communication; notebook computers; optical links; optical receivers; optical transmitters; demodulation circuit; free space optical data link; handheld PC; hardware platform; high frequency switching; interface; light modulation; mobile PC device; portable multimedia information device; portable receiver; protocol; software applications; transmitter; visible light LED; wireless optical data link; Application software; Circuits; Demodulation; Graphics; Hardware; Light emitting diodes; Optical devices; Optical modulation; Optical receivers; Optical transmitters;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.920424

Filename

920424