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Article: Tricolor light-emitting diode dot matrix display system with audio output

TitleTricolor light-emitting diode dot matrix display system with audio output
Authors
KeywordsAudio communication
Light-emitting diodes
Tricolor display
Issue Date2001
PublisherIEEE.
Citation
Ieee Transactions On Industry Applications, 2001, v. 37 n. 2, p. 534-540 How to Cite?
AbstractIn this paper, a novel tricolor dot matrix display system in which all the light-emitting diodes (LEDs) are modulated and encoded with audio information is presented. The novelty is on the concurrent use of the tricolor LED display for simultaneous visual message display and audio signal transmission in a free-space optical link. This is a new generation of tricolor dot matrix displays 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. The system is comprised of a tricolor dot matrix display panel with an interface circuit to a computer, an audio signal transmitter, and a receiver. It also 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 is designed to demodulate the optically transmitted audio information, and reproduce the messages with the speaker. For modulating emission of the 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.
Persistent Identifierhttp://hdl.handle.net/10722/42880
ISSN
2015 Impact Factor: 1.901
2015 SCImago Journal Rankings: 1.388
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPang, GKHen_HK
dc.contributor.authorChan, CHen_HK
dc.contributor.authorKwan, TTOen_HK
dc.date.accessioned2007-03-23T04:33:56Z-
dc.date.available2007-03-23T04:33:56Z-
dc.date.issued2001en_HK
dc.identifier.citationIeee Transactions On Industry Applications, 2001, v. 37 n. 2, p. 534-540en_HK
dc.identifier.issn0093-9994en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42880-
dc.description.abstractIn this paper, a novel tricolor dot matrix display system in which all the light-emitting diodes (LEDs) are modulated and encoded with audio information is presented. The novelty is on the concurrent use of the tricolor LED display for simultaneous visual message display and audio signal transmission in a free-space optical link. This is a new generation of tricolor dot matrix displays 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. The system is comprised of a tricolor dot matrix display panel with an interface circuit to a computer, an audio signal transmitter, and a receiver. It also 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 is designed to demodulate the optically transmitted audio information, and reproduce the messages with the speaker. For modulating emission of the 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.en_HK
dc.format.extent273497 bytes-
dc.format.extent28160 bytes-
dc.format.extent961133 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Transactions on Industry Applicationsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2001 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.subjectAudio communicationen_HK
dc.subjectLight-emitting diodesen_HK
dc.subjectTricolor displayen_HK
dc.titleTricolor light-emitting diode dot matrix display system with audio outputen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0093-9994&volume=37&issue=2&spage=534&epage=540&date=2001&atitle=Tricolor+light-emitting+diode+dot+matrix+display+system+with+audio+outputen_HK
dc.identifier.emailPang, GKH:gpang@eee.hku.hken_HK
dc.identifier.authorityPang, GKH=rp00162en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/28.913719en_HK
dc.identifier.scopuseid_2-s2.0-0035272442en_HK
dc.identifier.hkuros61143-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035272442&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume37en_HK
dc.identifier.issue2en_HK
dc.identifier.spage534en_HK
dc.identifier.epage540en_HK
dc.identifier.isiWOS:000167822700019-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPang, GKH=7103393283en_HK
dc.identifier.scopusauthoridChan, CH=7404813577en_HK
dc.identifier.scopusauthoridKwan, TTO=7102387980en_HK

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