US 8,620,165 B2 · Transmitter, receiver for visible light communication and method using the same

Abstract

A visible light wireless communication receiver includes: a source code recognizing unit that receives a source bit stream and recognizes the source bit stream as source codes of a unit of a first number of bits; and a line coding unit that encodes each of the source codes into an encoding code of a unit of a second number of bits, the second number being larger than the first number. In particular, in the encoding code, the number of bits corresponding to 1 is the same as the number of bits corresponding to 0. Therefore, the change in brightness of lighting may be minimized in the visible light wireless communication.

Drawings

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Drawings

Claims3

Dependent claims

A visible light wireless communication method, comprising:

receiving a source bit stream and recognizing the source bit stream as source codes of a unit of a first number of bits;
encoding each of the source codes into an encoding code of a unit of a second number of bits, the second number being larger than the first number;
and
wherein the encoding code has the same number of bits corresponding to 1 as the number of bits corresponding to 0,
wherein the first number is 4 and the second number is 6, and
wherein the encoding encodes each of the source codes “0000”, “0001”, “0010”, “0011”, “0100”, “0101”, “0110”, “0111”, “1000”, “1001”, “1010”, “1011”, “1100”, “1101”, “1110”, “1111” into any one of the encoding codes “001110”, “001101”, “010011”, “010110”, “010101”, “100011”, “100110”, “100101”, “011001”, “011010”, “011100”, “110001”, “110010”, “101001”, “101010”, “101100”.

3 more elements

Dependencies are inferred from the claim text.

Description5,100 words

Summary1,576 words

#1. Field

#The present invention relates to a visible light wireless communication apparatus and a line coding technology for removing flickering thereof, and more particularly, to a visible light wireless communication apparatus capable of reducing flickering in a visible light wireless communication system and a line coding method for removing flickering.

#2. Description of the Related Art

Brief description of the drawings11 figures

#FIG. 1 is a diagram showing a configuration of a system to which a visible light wireless communication apparatus according to the present invention is applied;

#FIG. 2 is a diagram showing a 6-bit data pattern in which the number of 1 and 0 is three, respectively;

#FIG. 3 is a diagram showing a 4B6B line code according to an exemplary embodiment of the present invention;

Detailed description3,267 words

#The present invention will be described below with reference to the accompanying drawings. Herein, the detailed description of a related known function or configuration that may make the purpose of the present invention unnecessarily ambiguous in describing the present invention will be omitted. Exemplary embodiments of the present invention are provided so that those skilled in the art may more completely understand the present invention. Accordingly, the shape, the size, etc., of the elements in the drawings may be exaggerated for explicit comprehension.

#Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

#FIG. 1 is a diagram showing a configuration of a system to which a visible light wireless communication apparatus according to the present invention is applied.

Facts

Application

13/828,523Filed 14 Mar 2013 · continuation

Priority

KR 10-2009-008910821 Sep 2009

Published

US 2013/0195468 A11 Aug 2013

Granted

31 Dec 2013

Term ends

16 Sep 2030

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification3 codes

H04B 10/116
Indoor or close-range type systems: visible light communication
H04B 10/1149
Indoor or close-range type systems: arrangements for indoor wireless networking of information
H04B
Transmission

Family

Application12/883,574Parent of this continuation · filed 16 Sep 2010

US 2013/0195468 A1Pre-grant publication · published 1 Aug 2013

US 8,447,189 B2Parent of this continuation

US 2011/0069965 A1Published application

US 8,620,165 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

21 Sep 2009Priority claimedKR 10-2009-0089108
14 Mar 2013Application filedUS 13/828,523
1 Aug 2013PublishedUS 2013/0195468 A1
16 Sep 2013Assigned to Flextronics Ap, LLCcorrective assignment to correct the application serial no. from 13/828,523 to 13/828,513 previously recorded on reel 030029 frame 0853. assignor(s) hereby confirms the error was typographical and serial no. 13/828,523 was not intended to be conveyed to flextronics ap, llc.
31 Dec 2013GrantedUS 8,620,165 B2
1 Jun 2018Assigned to Electronics and Telecommunications Research Instituteassignment of assignor's interest
12 Oct 2026TodayWithin its term
16 Sep 2030Term endsEstimated

Transmitter, receiver for visible light communication and method using the same

Life of this patent

Transmitter, receiver for visible light communication and method using the same

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims3

Description5,100 words

Drawings

Classification3 codes

Life of this patent

Description5,100 words