Title:
NON-CONTACT MOVING BODY IDENTIFYING DEVICE
Document Type and Number:
WIPO Patent Application WO/1999/052222
Kind Code:
A1
Abstract:
A non-contact moving body identifying device provided with a responder (3) which is fixed to a moving body to be identified and, at the same time, writes or reads data in or from a built-in memory by demodulating a transmitted command signal and transmits a generated response signal after modulation, and an interrogator (2) which transmits the modulated command signal to the responder (3) by using a carrier, receives the transmitted response signal, and generates demodulated data. The interrogator (2) is provided with an extraction circuit (100) which extracts the frequency component of an original signal lower than the frequency of the carrier of the response signal based on the frequency of the carrier.
Inventors:
FUJINO HIROFUMI (JP)
ISHIDA HIROSHI (JP)
WATANABE SHUNZI (JP)
ISHIDA HIROSHI (JP)
WATANABE SHUNZI (JP)
Application Number:
PCT/JP1998/001572
Publication Date:
October 14, 1999
Filing Date:
April 06, 1998
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
FUJINO HIROFUMI (JP)
ISHIDA HIROSHI (JP)
WATANABE SHUNZI (JP)
FUJINO HIROFUMI (JP)
ISHIDA HIROSHI (JP)
WATANABE SHUNZI (JP)
International Classes:
G06K19/07; (IPC1-7): H04B1/59; H04B5/00
Foreign References:
| JPS63121773A | 1988-05-25 | |||
| JPH0854462A | 1996-02-27 | |||
| JPH0933645A | 1997-02-07 |
Attorney, Agent or Firm:
Miyata, Kaneo (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo, JP)
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