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Title:
ELECTRONIC DISPLAY SYSTEM
Document Type and Number:
Japanese Patent JP2013192192
Kind Code:
A
Abstract:

To provide an electronic display system in which an electronic display terminal can perform stable communication with an information distribution device, even when radio wave interference occurs.

Electronic display terminals 50a-50d, ... display arbitrary information. Access points 10a-10f, ... distribute the arbitrary information to the electronic display terminals 50a-50d. Each of the access points 10a-10f, ... has: a transmission part 13 for transmitting a beacon B; and a transmission part 14 of a mask signal M for blocking that the beacon B transmitted from other access points 10a-10f, ... is received by the electronic display terminals 50a-50d, .... The beacon B having information related to the device itself is a signal configured by a plurality of unit beacon signals b1-b5, ... which continue in a predetermined cycle Tm. The mask signal transmission part 14 transmits unit mask signals m1-m4, ... between continuous unit beacon signals b1-b5, ....


Inventors:
MURATA SHUJI
ABE YOICHIRO
KITAGAWA HIROKI
SHIMIZU TAKESHI
Application Number:
JP2012058919A
Publication Date:
September 26, 2013
Filing Date:
March 15, 2012
Export Citation:
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Assignee:
ISHIDA SEISAKUSHO
International Classes:
H04W72/04; A47F5/00
Domestic Patent References:
JPH1155300A1999-02-26
JP2002142265A2002-05-17
JP2005086439A2005-03-31
JP2008016942A2008-01-24
JP2009272662A2009-11-19
JP2012009942A2012-01-12
JP2012015867A2012-01-19
JP2000059439A2000-02-25
JPH1155300A1999-02-26
JP2002142265A2002-05-17
JP2005086439A2005-03-31
JP2008016942A2008-01-24
JP2009272662A2009-11-19
JP2012009942A2012-01-12
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation



 
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