Granted Patent: Handy Information Display System

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Patent History
  • Application
    US 09/251526
    1999-02-17
  • Granted
    US 6271815
    2001-08-07
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TitleHandy Information Display System
Granted PatentUS 6271815
Granted Date2001-08-07
Priority Date1999-02-17 US 09/251526
1998-02-20 US 09/075457P
InventorsCheung, Sing Wai
Kwok, Chi Kong Paul
Pang, Grantham Kwok Hung
Tam, Yau Yee
Tse, Kai Wing
Yang, Edward S.
CitationUS Patent 6271815. Washington, DC: US Patent and Trademark Office (USPTO), 2001 [How to Cite?]
AbstractA Handy Information Display System Is Disclosed. The System Has Three Main Components: A Light Emitting Diodes (Led) Array Display Board, An Information Server And A Portable Unit. The Led Array Display Board Includes A Plurality Of Light Emitting Diodes And Photodetectors. It Can Be Used To Display Alphabets, Numbers And Simple Graphics. While It Visually Gives An Effectively Stationary Message Display, The Led Can Also Be Modulated To Transmit High Frequency Signals. The Modulating Frequency Should Be High Enough To Be Imperceptible By Humans. Both Message Display And Signal Transmission Are Controlled By An Information Server. The System Further Comprises At Least One Portable Unit. The Portable Unit Is Equipped With An Optical Transceiver And A Visual Display Unit. The Optical Transceiver Can Detect The Signals Transmitted From The Led Array Display Board. The Visual Display Unit Then Shows The Information Corresponding To The Received Signals.
ReferencesUS 4330870 (A) 1982-05-18

US 4409467 (A) 1983-10-11

US 4763291 (A) 1988-08-09

US 4839837 (A) 1989-06-13

US 5099348 (A) 1992-03-24

US 5257020 (A) 1993-10-26

US 5257020 (C1) 2002-08-13

US 5969704 (A) 1999-10-19

US 6089459 (A) 2000-07-18
DC Field
Value
dc.contributor.inventorCheung, Sing Wai
dc.contributor.inventorKwok, Chi Kong Paul
dc.contributor.inventorPang, Grantham Kwok Hung
dc.contributor.inventorTam, Yau Yee
dc.contributor.inventorTse, Kai Wing
dc.contributor.inventorYang, Edward S.
dc.date.accessioned2011-10-19T06:30:06Z
patents.date.application1999-02-17
dc.date.available2011-10-19T06:30:06Z
patents.date.granted2001-08-07
patents.date.priority1999-02-17 US 09/251526
patents.date.priority1998-02-20 US 09/075457P
dc.description.abstractA Handy Information Display System Is Disclosed. The System Has Three Main Components: A Light Emitting Diodes (Led) Array Display Board, An Information Server And A Portable Unit. The Led Array Display Board Includes A Plurality Of Light Emitting Diodes And Photodetectors. It Can Be Used To Display Alphabets, Numbers And Simple Graphics. While It Visually Gives An Effectively Stationary Message Display, The Led Can Also Be Modulated To Transmit High Frequency Signals. The Modulating Frequency Should Be High Enough To Be Imperceptible By Humans. Both Message Display And Signal Transmission Are Controlled By An Information Server. The System Further Comprises At Least One Portable Unit. The Portable Unit Is Equipped With An Optical Transceiver And A Visual Display Unit. The Optical Transceiver Can Detect The Signals Transmitted From The Led Array Display Board. The Visual Display Unit Then Shows The Information Corresponding To The Received Signals.
patents.description.assigneeUniv Hong Kong [Us]
patents.description.ccUS
patents.description.countryUnited States of America
patents.description.kindB1
dc.description.naturepublished_or_final_version
patents.identifier.applicationUS 09/251526
dc.identifier.citationUS Patent 6271815. Washington, DC: US Patent and Trademark Office (USPTO), 2001 [How to Cite?]
patents.identifier.grantedUS 6271815
dc.identifier.hkuros72482
patents.identifier.hkutechidEEE-2001-00187
dc.identifier.urihttp://hdl.handle.net/10722/142135
patents.relation.familyAU 2773299 (A) 1999-09-06
patents.relation.familyUS 6271815 (B1) 2001-08-07
patents.relation.familyWO 9942985 (A1) 1999-08-26
dc.relation.isreferencedbyEP 2372765 (A1) 2011-10-05
dc.relation.isreferencedbyUS 2009297146 (A1) 2009-12-03
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dc.relation.isreferencedbyUS 6655589 (B1) 2003-12-02
dc.relation.isreferencedbyUS 6486791 (B1) 2002-11-26
dc.relation.isreferencedbyUS 2002180612 (A1) 2002-12-05
dc.relation.isreferencedbyUS 6683590 (B1) 2004-01-27
dc.relation.isreferencedbyUS 6445369 (B1) 2002-09-03
dc.relation.referencesUS 4330870 (A) 1982-05-18
dc.relation.referencesUS 4409467 (A) 1983-10-11
dc.relation.referencesUS 4763291 (A) 1988-08-09
dc.relation.referencesUS 4839837 (A) 1989-06-13
dc.relation.referencesUS 5099348 (A) 1992-03-24
dc.relation.referencesUS 5257020 (A) 1993-10-26
dc.relation.referencesUS 5257020 (C1) 2002-08-13
dc.relation.referencesUS 5969704 (A) 1999-10-19
dc.relation.referencesUS 6089459 (A) 2000-07-18
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents
dc.titleHandy Information Display System
dc.typePatent
patents.typePatent_granted