Title:
NONCONTACT COMMUNICATION DEVICE AND NONCONTACT COMMUNICATION METHOD
Document Type and Number:
Japanese Patent JP2009033517
Kind Code:
A
Abstract:
To remarkably shorten a communication time when using a plurality of antennas, and to efficiently perform communication processings with an RFID tag.
Two antennas 1A and 1B, disposed along the moving direction of a tag 5 in such a manner that their communication regions partly overlap, is made to transmit carrier waves which is synchronized between the antennas. Under this state, a command is transmitted from the antenna (for example, 1A) corresponding to the communication region (for example, 4A), where the tag 5 first enters, and a response signal from the tag 5 is decoded, by using signals received by both the antennas 1A and 1B that correspond to the command transmission.
Inventors:
ARIYOSHI TOMONORI
OZAKI KOYO
OZAKI KOYO
Application Number:
JP2007195885A
Publication Date:
February 12, 2009
Filing Date:
July 27, 2007
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
H04B5/02; G06K17/00
Domestic Patent References:
| JP2007079882A | 2007-03-29 | |||
| JP2001021645A | 2001-01-26 | |||
| JP2006318078A | 2006-11-24 | |||
| JP2003283367A | 2003-10-03 | |||
| JP2005244445A | 2005-09-08 | |||
| JP2006106897A | 2006-04-20 | |||
| JP2006040052A | 2006-02-09 |
Attorney, Agent or Firm:
Yumitsu Suzuki
Yukino Koishikawa
Kenta Nitta
Yukino Koishikawa
Kenta Nitta
Previous Patent: MULTI-HOP RADIO COMMUNICATION NETWORK, AND RADIO COMMUNICATION TERMINAL
Next Patent: DATA TRANSMISSION DEVICE, METHOD, AND PROGRAM
Next Patent: DATA TRANSMISSION DEVICE, METHOD, AND PROGRAM