Title:
INFORMATION TRANSMISSION SYSTEM, INFORMATION DISPLAY DEVICE, INFORMATION READING DEVICE, AND INFORMATION READING METHOD
Document Type and Number:
Japanese Patent JP2015056110
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a new-type mechanism of information transmission capable of overcoming the problems of two-dimensional bar codes.SOLUTION: An information transmission system includes: an information display device 1 that changes the content of display of the depth of cells on a display screen 11 according to control signals from a control device 2 to display information; and an information reading device 5 that measures three-dimensional coordinates of the cells on the display screen from speckle patterns produced by coherent light, determines changes in the depth of the cells on the display screen, and converts the displayed information into corresponding information with reference to a conversion table on the basis of the display state for each of the cells.
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Inventors:
ISHIYAMA YORICHIKA
ITO MASAHIRO
TANAKA HIROMASA
UEDA TAKESHI
TOKITA TOSHIAKI
KASUYA YUJI
MASUDA KOJI
NIHEI YASUHIRO
TAKANASHI KENICHI
ITO MASAHIRO
TANAKA HIROMASA
UEDA TAKESHI
TOKITA TOSHIAKI
KASUYA YUJI
MASUDA KOJI
NIHEI YASUHIRO
TAKANASHI KENICHI
Application Number:
JP2013190371A
Publication Date:
March 23, 2015
Filing Date:
September 13, 2013
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
G06K7/00; G01B11/00; G06K7/01; G06K7/10; G06K19/06; G06T1/00
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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