Title:
可視光通信用受信機、可視光通信システム、及び可視光通信方法
Document Type and Number:
Japanese Patent JP5399975
Kind Code:
B2
Abstract:
A visible light communication receiver increases a communication distance from a transmitter to a receiver while realizing high transmission speed. The visible light communication receiver includes a receiving unit that receives a visible light signal from a blue light-excited white LED driven by a driving current signal generated by adding rising and falling pulses to respective rising and falling edges of a transmission data encoded according to a DC-free RLL code having a minimum run of 1 and NRZI-modulated prior to adding the rising and falling pulses; a photoelectric converter that converts the visible light signal into an electrical signal; an equalizer that equalizes the electrical signal to a duobinary signal; a discriminator that discriminates the duobinary signal to generate a 3-value signal; a maximum-likelihood decoder that ML-decodes the 3-value signal to output a decoded signal; and a decoder that RLL decodes the decoded signal.
Inventors:
Masashi Yamada
Nakamura 公亮
Nakamura 公亮
Application Number:
JP2010112586A
Publication Date:
January 29, 2014
Filing Date:
May 14, 2010
Export Citation:
Assignee:
Taiyo Yuden Co., Ltd.
International Classes:
H04B10/11; H04B10/116; H01L33/00; H04B10/07; H04B10/516; H04B10/61; H04B10/69
Attorney, Agent or Firm:
Tomohito Murakoshi