The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2014
Filed:
Oct. 07, 2009
Daeho Kim, Daejeon, KR;
Taegyu Kang, Daejeon, KR;
Sangkyu Lim, Daejeon, KR;
Taewan Kim, Daejeon, KR;
Myungae Chung, Daejeon, KR;
Sungwon Sohn, Daejeon, KR;
Daeho Kim, Daejeon, KR;
Taegyu Kang, Daejeon, KR;
Sangkyu Lim, Daejeon, KR;
Taewan Kim, Daejeon, KR;
Myungae Chung, Daejeon, KR;
Sungwon Sohn, Daejeon, KR;
Electronics & Telecommunications Research Institute, Daejeon, KR;
Abstract
The visible light communication apparatus includes: a brightness signal generator that calculates a duty cycle of an driving signal corresponding to brightness requirement information and generates clock frequency information on brightness signals based on the calculated duty cycle; a transmission data generator that generates transmission data; an illumination driver that generates and outputs an driving signal in a pulse waveform based on the clock frequency information of the brightness signals and the transmission data and controls a pulse position of a turn on section for each bit unit time in the waveform of the driving signal based on the transmission data; and an illumination that is operated according to the driving signal from the illumination driver.