Title:
リーダー装置、その装置の送信方法及びタグ
Document Type and Number:
Japanese Patent JP4265487
Kind Code:
B2
Abstract:
A reader device (100) and RF tag (400) improves the efficiency of frequency usage without increasing bandwidth using wireless communication from the reader to the tag and provides a transmission method that improves the power supply efficiency from the reader to the tag to extend the communication distance from the tag to the reader. A reader device for wirelessly communicating with an RF tag, comprises circuitry operable to transmit a wireless signal including information indicating encoding method of data to the RF tag and circuitry operable to receive and demodulate a wireless signal from the RF tag.
Inventors:
Yoshiki Tanaka
Kunihiko Goto
Daisuke Yamazaki
Kunihiko Goto
Daisuke Yamazaki
Application Number:
JP2004179824A
Publication Date:
May 20, 2009
Filing Date:
June 17, 2004
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04B1/59; G01S13/75; G01S13/76; G06K7/00; G06K17/00; G06K19/07; H03M5/12; H04B5/02; H04L25/49; H04L27/02
Domestic Patent References:
| JP2003036426A | ||||
| JP2001024718A | ||||
| JP2002536854A | ||||
| JP2002149196A | ||||
| JP2000201120A | ||||
| JP2002325051A | ||||
| JP4368037A | ||||
| JP11298546A | ||||
| JP2003158470A |
Attorney, Agent or Firm:
Junichi Yokoyama