US Patent 7889997 Portable wireless terminal for visible light communication
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Patent abstract
A portable wireless terminal for performing visible light communication with other devices through free space includes an optical detector for generating an electrical signal after photoelectrically converting some of optical signal input from free space and outputting the electrical signal; a reflector for retro-reflecting the others of the optical signal incident on the concave grooves, the reflector having a reflection surface on which at least one concave groove is formed; and a modulator for outputting the retro-reflected optical signal after data modulation.
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US Patent 07889997 Portable wireless terminal for visible light communication US Patent 7889997 Portable wireless terminal for visible light communication
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Patent Number
0788999700
Patent Number
788999700
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Patent Jurisdiction
Patent Number
078899970
Date of Patent
February 15, 2011
0Patent Application Number
118931930
Date Filed
August 15, 2007
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
078899970
Date of Patent
February 15, 2011
0Patent Application Number
118931930
Date Filed
August 15, 2007
0Official Website
Patent Primary Examiner
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US Patent 07889997 Portable wireless terminal for visible light communication
Infobox
Is a
Patent jurisdiction
Patent number
07889997
Date of patent
February 15, 2011
Patent application number
11893193
Date Filed
August 15, 2007
Patent primary examiner
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