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  Patent History
  • Application
    PC T/US1999003562 1999-02-19
  • Publication
    WO 9942985 1999-08-26

published patent: HANDY INFORMATION DISPLAY SYSTEM

TitleHANDY INFORMATION DISPLAY SYSTEM
Priority Date1998-02-20 US 09/075457P
Inventors
Issue Date1999
Citation
WO Published patent application WO 9942985. World Intellectual Property Organization (WIPO), PatentScope, 1999 How to Cite?
AbstractA handy information display system is disclosed. The system has three main components: a light emitting diodes (LED) array display board (20), an information server (10) and a portable unit (30). The LED array display board (20) includes a plurality of light emitting diodes and photodetectors. It is used to display alphabets, numbers and simple graphics. While it visually gives an effectively stationary message display, the LEDs can also be modulated to transmit high frequency signals. The modulating frequency should be high enough to be imperceptible by humans. An information server (10) controls both message display and signal transmission. The portable unit (30) is equipped with an optical transceiver (31) and a visual display unit. The optical transceiver can detect the signals transmitted from the LED array display board (20). The visual display unit then shows the information corresponding to the received signals.
Persistent Identifierhttp://hdl.handle.net/10722/177168
References

 

DC FieldValueLanguage
dc.date.accessioned2012-11-30T08:39:17Z-
dc.date.available2012-11-30T08:39:17Z-
dc.date.issued1999-
dc.identifier.citationWO Published patent application WO 9942985. World Intellectual Property Organization (WIPO), PatentScope, 1999en_HK
dc.identifier.urihttp://hdl.handle.net/10722/177168-
dc.description.abstractA handy information display system is disclosed. The system has three main components: a light emitting diodes (LED) array display board (20), an information server (10) and a portable unit (30). The LED array display board (20) includes a plurality of light emitting diodes and photodetectors. It is used to display alphabets, numbers and simple graphics. While it visually gives an effectively stationary message display, the LEDs can also be modulated to transmit high frequency signals. The modulating frequency should be high enough to be imperceptible by humans. An information server (10) controls both message display and signal transmission. The portable unit (30) is equipped with an optical transceiver (31) and a visual display unit. The optical transceiver can detect the signals transmitted from the LED array display board (20). The visual display unit then shows the information corresponding to the received signals.en_HK
dc.relation.isreferencedbyUS 8032030 (B2) 2011-10-04en_HK
dc.relation.isreferencedbyUS 2009297146 (A1) 2009-12-03en_HK
dc.relation.isreferencedbyUS 7468677 (B2) 2008-12-23en_HK
dc.relation.isreferencedbyUS 2007024461 (A1) 2007-02-01en_HK
dc.relation.isreferencedbyDE 102005061786 (A1) 2007-06-28en_HK
dc.relation.isreferencedbyDE 102005061786 (B4) 2007-10-31en_HK
dc.relation.isreferencedbyWO 2004038685 (A1) 2004-05-06en_HK
dc.relation.isreferencedbyWO 0241276 (A2) 2002-05-23en_HK
dc.relation.isreferencedbyWO 0241276 (A3) 2003-01-16en_HK
dc.relation.isreferencedbyDE 19959387 (A1) 2001-06-13en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documentsen_US
dc.titleHANDY INFORMATION DISPLAY SYSTEMen_HK
dc.typePatenten_US
dc.description.naturepublished_or_final_versionen_US
dc.contributor.inventorYang, ESen_HK
dc.contributor.inventorTam, Yau-Yeeen_HK
dc.contributor.inventorPang, GKHen_HK
dc.contributor.inventorCheung, SWen_HK
dc.contributor.inventorTse, Kai-Wingen_HK
dc.contributor.inventorKwok, Paul, Chi-Kongen_HK
patents.identifier.applicationPC T/US1999003562en_HK
patents.description.assigneeUNIV HONG KONG [CN]; YANG EDWARD S [US]en_HK
patents.description.countryWorld Intellectual Property Organization (WIPO)en_HK
patents.date.publication1999-08-26en_HK
dc.relation.referencesUS 5708452 (A) 1998-01-13en_HK
dc.relation.referencesUS 5619361 (A) 1997-04-08en_HK
dc.relation.referencesUS 5321542 (A) 1994-06-14en_HK
dc.relation.referencesUS 4330870 (A) 1982-05-18en_HK
dc.relation.referencesUS 5598290 (A) 1997-01-28en_HK
dc.relation.referencesUS 5696500 (A) 1997-12-09en_HK
patents.date.application1999-02-19en_HK
patents.date.priority1998-02-20 US 09/075457Pen_HK
patents.description.ccWOen_HK
patents.identifier.publicationWO 9942985en_HK
patents.relation.familyAU 2773299 (A) 1999-09-06en_HK
patents.relation.familyUS 6271815 (B1) 2001-08-07en_HK
patents.relation.familyWO 9942985 (A1) 1999-08-26en_HK
patents.description.kindA1en_HK
patents.typePatent_publisheden_HK

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