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Conference Paper: Tricolor light emitting diode dot matrix display system with audio output

TitleTricolor light emitting diode dot matrix display system with audio output
Authors
KeywordsLight emitting diodes
Tricolor display
Audio communication
Issue Date2000
PublisherIEEE.
Citation
Conference Record - Ias Annual Meeting (Ieee Industry Applications Society), 2000, v. 5, p. 3460-3467 How to Cite?
AbstractIn this paper, a novel tricolor dot matrix display system in which all the LEDs are modulated and encoded with audio information is presented. The novelty is on the concurrent use of the tricolor LEDs for simultaneous visual message display and audio signal transmission in a free space optical link. The system is comprised of a tricolor LED dot matrix display panel with an interface circuit to a computer, an audio signal transmitter, and a receiver. The system further comprises an executive program that runs on the computer for the display control of characters, decorative pattern or messages on the display panel. The receiver, combined with a speaker, is located at some distance from the display system. The receiver is designed to demodulate the optically transmitted audio information and reproduce the messages with the speaker. For modulating emission of tricolor LEDs, an oscillator is used to vary the frequency of on/off periods of the LEDs. The frequency of flicker is high enough to be indistinguishable by human eye and hence display appears to be constantly illuminated. This is a new generation of tricolor LED dot matrix display where in addition to the usual function of LED display, they concurrently provide audio broadcasting through the visible light rays transmitted by the display panel or assembly.
Persistent Identifierhttp://hdl.handle.net/10722/46267
ISSN

 

DC FieldValueLanguage
dc.contributor.authorPang, Granthamen_HK
dc.contributor.authorChan, ChiHoen_HK
dc.contributor.authorKwan, Thomasen_HK
dc.date.accessioned2007-10-30T06:46:08Z-
dc.date.available2007-10-30T06:46:08Z-
dc.date.issued2000en_HK
dc.identifier.citationConference Record - Ias Annual Meeting (Ieee Industry Applications Society), 2000, v. 5, p. 3460-3467en_HK
dc.identifier.issn0197-2618en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46267-
dc.description.abstractIn this paper, a novel tricolor dot matrix display system in which all the LEDs are modulated and encoded with audio information is presented. The novelty is on the concurrent use of the tricolor LEDs for simultaneous visual message display and audio signal transmission in a free space optical link. The system is comprised of a tricolor LED dot matrix display panel with an interface circuit to a computer, an audio signal transmitter, and a receiver. The system further comprises an executive program that runs on the computer for the display control of characters, decorative pattern or messages on the display panel. The receiver, combined with a speaker, is located at some distance from the display system. The receiver is designed to demodulate the optically transmitted audio information and reproduce the messages with the speaker. For modulating emission of tricolor LEDs, an oscillator is used to vary the frequency of on/off periods of the LEDs. The frequency of flicker is high enough to be indistinguishable by human eye and hence display appears to be constantly illuminated. This is a new generation of tricolor LED dot matrix display where in addition to the usual function of LED display, they concurrently provide audio broadcasting through the visible light rays transmitted by the display panel or assembly.en_HK
dc.format.extent687632 bytes-
dc.format.extent4353 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofConference Record - IAS Annual Meeting (IEEE Industry Applications Society)en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectLight emitting diodesen_HK
dc.subjectTricolor displayen_HK
dc.subjectAudio communicationen_HK
dc.titleTricolor light emitting diode dot matrix display system with audio outputen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0197-2618&volume=5&spage=3460&epage=3467&date=2000&atitle=Tricolor+light+emitting+diode+dot+matrix+display+system+with+audio+outputen_HK
dc.identifier.emailPang, Grantham:gpang@eee.hku.hken_HK
dc.identifier.authorityPang, Grantham=rp00162en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/IAS.2000.882665en_HK
dc.identifier.scopuseid_2-s2.0-0034508943en_HK
dc.identifier.hkuros61152-
dc.identifier.volume5en_HK
dc.identifier.spage3460en_HK
dc.identifier.epage3467en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPang, Grantham=7103393283en_HK
dc.identifier.scopusauthoridChan, ChiHo=7404813577en_HK
dc.identifier.scopusauthoridKwan, Thomas=7102387980en_HK

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