Title:
タグシステム、ICタグ、ICタグ制御方法、プログラム
Document Type and Number:
Japanese Patent JP4037421
Kind Code:
B2
Abstract:
To provide a tag system and an IC tag which reduces collision probability of signals by increase of density of IC tags, reduces consumption power of the IC tags, furthermore, can issue a quick warning if a security service is required.
In a tag system, a tag reader 100 periodically issues a beacon signal including a command or ID (identification) to an IC tag 10, the IC tag 10 detects the command or the ID included in the received beacon signal from the tag reader 100, discriminates an operating condition by the command or the ID, and changes operation of the IC tag 10 itself (for example, a starting period).
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
Shigeru sunshine
Miyakoshi Yuki
Shuichi Yoshino
Masashi Shimizu
Miyakoshi Yuki
Shuichi Yoshino
Masashi Shimizu
Application Number:
JP2005162364A
Publication Date:
January 23, 2008
Filing Date:
June 02, 2005
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04B1/59; G06K17/00; G06K19/07; G08B13/22; G08B25/04; H04B5/02
Domestic Patent References:
| JP6281732A | ||||
| JP2004508754A | ||||
| JP2002315081A | ||||
| JP2002186009A |
Attorney, Agent or Firm:
Masatake Shiga
Yasuhiko Murayama
Yasuhiko Murayama