Optical communication apparatus, wavelength band estimating apparatus, optical communication method and storage medium

Patent metadata

Field	Value
Publication number	US-2016218805-A1
Application number	US-201514975379-A
Country	US
Kind code	A1
Filing date	Dec 18, 2015
Priority date	Jan 28, 2015
Publication date	Jul 28, 2016
Grant date	—

Abstract

An optical communication apparatus includes a light receiving unit, a wavelength band determining unit and an estimating unit. The light receiving unit receives light which changes to predetermined wavelength bands in a predetermined cycle according to communication object information, for a predetermined light reception period. The wavelength band determining unit determines each wavelength band of the light received by the light receiving unit. The estimating unit estimates that a wavelength band of the light received by the light receiving unit is any one of the predetermined wavelength bands, in a case where said wavelength band determined by the wavelength band determining unit is not any one of the predetermined wavelength bands.

First claim

What is claimed is:

1 . An optical communication apparatus comprising:
a light receiving unit that receives light which changes to predetermined wavelength bands in a predetermined cycle according to communication object information, for a predetermined light reception period; a wavelength band determining unit that determines each wavelength band of the light received by the light receiving unit; and an estimating unit that estimates that a wavelength band of the light received by the light receiving unit is any one of the predetermined wavelength bands, in a case where said wavelength band determined by the wavelength band determining unit is not any one of the predetermined wavelength bands.

2 . The optical communication apparatus according to claim 1 , wherein:
the estimating unit estimates that the wavelength band of the received light received by the light receiving unit is any one of the predetermined wavelength bands, based on a relation between a first wavelength band and a second wavelength band; the first wavelength band is determined lately by the wavelength band determining unit; and the second wavelength band is determined by the wavelength band determining unit in a previous process or estimated by the estimating unit in a previous process.

3 . The optical communication apparatus according to claim 2 , wherein:
the estimating unit estimates that the wavelength band of the received light received by the light receiving unit is a third wavelength band, in a case where the first wavelength band is between the second wavelength band and the third wavelength band; and the third wavelength band is any one of the predetermined wavelength bands.

4 . The optical communication apparatus according to claim 2 , wherein:
the estimating unit estimates that the wavelength band of the light received by the light receiving unit is any one of the predetermined wavelength bands, in each wavelength band.

5 . A wavelength band estimating apparatus comprising:
a wavelength band determining unit that determines each wavelength band of light received for a predetermined light reception period; and an estimating unit that estimates that a wavelength band of the received light is any one of predetermined wavelength bands, in a case where said wavelength band determined by the wavelength band determining unit is not any one of the predetermined wavelength bands.

6 . The wavelength band estimating apparatus according to claim 5 , wherein:
the estimating unit estimates that the wavelength band of the received light is any one of the predetermined wavelength bands, based on a relation between a first wavelength band and a second wavelength band; the first wavelength band is determined lately by the wavelength band determining unit; and the second wavelength band is determined by the wavelength band determining unit in a previous process or estimated by the estimating unit in a previous process.

7 . The wavelength band estimating apparatus according to claim 6 , wherein:
the estimating unit estimates that the wavelength band of the received light is a third wavelength band, in a case where the first wavelength band is between the second wavelength band and the third wavelength band; and the third wavelength band is any one of the predetermined wavelength bands.

8 . The wavelength band estimating apparatus according to claim 6 , wherein:
the estimating unit estimates that the wavelength band of the received light is any one of the predetermined wavelength bands, in each wavelength band.

9 . An optical communication method comprising:
receiving light which changes to predetermined wavelength bands in a predetermined cycle according to communication object information, for a predetermined light reception period; determining each wavelength band of the received light; and estimating that a wavelength band of the received light is any one of the predetermined wavelength bands, in a case where said determined wavelength band is not any one of the predetermined wavelength bands.

10 . The optical communication method according to claim 9 , further comprising:
estimating that the wavelength band of the received light is any one of the predetermined wavelength bands, based on a relation between a first wavelength band and a second wavelength band; wherein the first wavelength band is determined lately; and wherein the second wavelength band is determined in a previous process or estimated in a previous process.

11 . The optical communication method according to claim 10 , further comprising:
estimating that the wavelength band of the received light is a third wavelength band, in a case where the first wavelength band is between the second wavelength band and the third wavelength band; wherein the third wavelength band is any one of the predetermined wavelength bands.

12 . The optical communication method according to claim 10 , further comprising:
estimating that the wavelength band of the received light is any one of the predetermined wavelength bands, in each wavelength band.

13 . A non-transitory computer-readable storage medium storing a program for controlling a computer to perform following processes includes:
receiving light which changes to predetermined wavelength bands in a predetermined cycle according to communication object information, for a predetermined light reception period; determining each wavelength band of the received light; and estimating that a wavelength band of the received light is any one of the predetermined wavelength bands, in a case where said determined wavelength band is not any one of the predetermined wavelength bands.

14 . The storage medium according to claim 13 , further comprising:
estimating that the wavelength band of the received light is any one of the predetermined wavelength bands, based on a relation between a first wavelength band and a second wavelength band; wherein the first wavelength band is determined lately; and wherein the second wavelength band is determined in a previous process or estimated in a previous process.

15 . The storage medium according to claim 14 , further comprising:
estimating that the wavelength band of the received light is a third wavelength band, in a case where the first wavelength band is between the second wavelength band and the third wavelength band; wherein the third wavelength band is any one of the predetermined wavelength bands.

16 . The storage medium according to claim 14 , further comprising:
estimating that the wavelength band of the received light is any one of the predetermined wavelength bands, in each wavelength band.

Assignees

• Casio Computer Co Ltd

Inventors

• Iizuka Nobuo
• Kikuchi Masaaki

Classifications

• H04B10/60

  Receivers · CPC title

• H04B10/116 Primary

  Visible light communication · CPC title