Information communication method

• US 9,515,731 B2
• Filed: 01/21/2016
• Issued: 12/06/2016
• Est. Priority Date: 12/27/2012
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Inventors: Oshima, Mitsuaki, Nakanishi, Koji, Aoyama, Hideki, Fuchigami, Ikuo, Mukai, Tsutomu, Shin, Hidehiko, Matsushita, Yosuke, Iida, Shigehiro, Yamada, Kazunori
• Primary Examiner(s): Phan, Hanh
• Application Number:
  US15/002,812
• Publication Number:
  US 20160142138A1
• Time in Patent Office: 320 Days
• Field of Search: 398/172, 398/118, 398/119, 398/128, 398/130, 398/127, 398/182, 398/183, 398/186, 398/25, 398/140, 348/222.1, 348/211.99, 348/211.5, 348/211.1, 348/229.1, 348/308, 348/296, 345/175, 345/690, 345/102
• US Class Current: 1/1
• CPC Class Codes: H04B 10/11 Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
• CPC Class Codes: H04B 10/1143 Bidirectional transmission
• CPC Class Codes: H04B 10/116 Visible light communication
• CPC Class Codes: H04L 12/282 based on user interaction within the home receiver circuitry for displaying additional information being controlled by a remote control apparatus H04N21/42204
• CPC Class Codes: H04L 2012/2841 Wireless
• CPC Class Codes: H04N 23/73 by influencing the exposure time
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 4/50 Service provisioning or reconfiguring

Abstract

An information communication method of transmitting a signal is provided that uses a change in luminance. The method includes determining a pattern of the change in luminance by modulating the signal to be transmitted, and transmitting the signal by a light emitter changing in luminance according to the determined pattern. The pattern of the change in luminance is a pattern in which one of two different luminance values occurs in each arbitrary position in a predetermined duration. The determining a pattern of change in luminance includes dividing the predetermined duration into four duration units, so that one of two different luminance value occurs in one duration unit of the four duration units and the other luminance value of the two different luminance value occurs in three duration units of the four duration units, the three duration units are other than the one duration unit.

Claims

1. An information communication method of transmitting a signal using a change in luminance, the information communication method comprising:

determining a pattern of the change in luminance by modulating the signal to be transmitted; and

transmitting the signal by a light emitter changing in luminance according to the determined pattern,

wherein the pattern of the change in luminance is a pattern in which one of two different luminance values occurs in each arbitrary position in a predetermined duration, and

wherein the determining a pattern of change in luminance includes dividing the predetermined duration into four duration units, so that one of two different luminance value occurs in one duration unit of the four duration units and the other luminance value of the two different luminance value occurs in three duration units of the four duration units, the three duration units are other than the one duration unit.

2. An information communication apparatus of transmitting a signal using a change in luminance, the information communication apparatus comprising:

a determiner configured to determine a pattern of the change in luminance by modulating the signal to be transmitted; and

a transmitter configured to transmit the signal by a light emitter changing in luminance according to the determined pattern,

wherein the pattern of the change in luminance is a pattern in which one of two different luminance values occurs in each arbitrary position in a predetermined duration, and

wherein the determiner is configured to divide the predetermined duration into four duration units, and determine the pattern of the change in luminance so that one of two different luminance value occurs in one duration unit of the four duration units and the other luminance value of the two different luminance value occurs in three duration units of the four duration units, the three duration units are other than the one duration unit.