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:
Mar. 04, 2014
Filed:
Oct. 07, 2011
Sang-kyu Lim, Daejeon, KR;
Il-soon Jang, Daejeon, KR;
Dae Ho Kim, Daejeon, KR;
You Jin Kim, Daejeon, KR;
Tae-gyu Kang, Daejeon, KR;
Sang-Kyu Lim, Daejeon, KR;
Il-Soon Jang, Daejeon, KR;
Dae Ho Kim, Daejeon, KR;
You Jin Kim, Daejeon, KR;
Tae-Gyu Kang, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
An apparatus for transmitting data for visible light communication sets up the pulse width control step of pulse width modulation (PWM) in a unit time interval, modulates each symbol of VLC source data input into a PWM signal in accordance with the pulse width control step, generates a visible light modulation signal by controlling the turn-on time or turn-off time of a plurality of light emitting diodes (LEDs) in response to the PWM signal, and transmits the visible light modulation signal.