Title:
RADIO COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/119405
Kind Code:
A1
Abstract:
Provided is a radio communication device capable of sufficiently removing a signal
coming from the transmission side from a reception signal. The radio communication device
includes: a cancel amplitude control unit (62) for selectively suppressing a
cancel signal to a cancel signal synthesis unit (52); a reception signal end unit
(50) for selectively terminating the reception signal input end (64i); a signal
intensity detection unit (78) for detecting a signal intensity; a storage unit
(82) for storing the signal intensity detected by the signal intensity detection unit
(78); a signal intensity comparison unit (80) for comparing a plurality of types
of signal intensity read from the storage unit (82); and a cancel signal control
unit (72) for controlling the cancel signal amplitude and phase according to
the comparison result obtained by the signal intensity comparison unit (80). Accordingly,
it is possible to accurately detect the intensity of the reception signal by suppressing
the cancel signal by the cancel amplitude control unit (62). On the other hand,
by terminating the reception signal by the reception signal end unit (50), it
is possible to accurately detect the intensity of the cancel signal.
Inventors:
NAGAI TAKUYA (JP)
OHASHI TSUYOSHI (JP)
HIRATA HIRONORI (JP)
TAKEDA MICHIHIRO (JP)
TAKI KAZUNARI (JP)
OHASHI TSUYOSHI (JP)
HIRATA HIRONORI (JP)
TAKEDA MICHIHIRO (JP)
TAKI KAZUNARI (JP)
Application Number:
PCT/JP2007/055454
Publication Date:
October 25, 2007
Filing Date:
March 16, 2007
Export Citation:
Assignee:
BROTHER IND LTD (JP)
NAGAI TAKUYA (JP)
OHASHI TSUYOSHI (JP)
HIRATA HIRONORI (JP)
TAKEDA MICHIHIRO (JP)
TAKI KAZUNARI (JP)
NAGAI TAKUYA (JP)
OHASHI TSUYOSHI (JP)
HIRATA HIRONORI (JP)
TAKEDA MICHIHIRO (JP)
TAKI KAZUNARI (JP)
International Classes:
H04B1/40; G01S7/28; G01S13/74; G06K17/00; H04B1/30; H04B1/59; H04B5/02; H04B7/015
Foreign References:
| JP2006081050A | 2006-03-23 | |||
| JP2006041929A | 2006-02-09 | |||
| JP2005328382A | 2005-11-24 | |||
| JPH11163952A | 1999-06-18 | |||
| JPH11136173A | 1999-05-21 | |||
| JP2000286772A | 2000-10-13 | |||
| JP2006033446A | 2006-02-02 |
Attorney, Agent or Firm:
IKEDA, Haruyuki (Nagoya-Dia. Bldg. No.215-1, Meieki 3-chome, Nakamura-ku, Nagoya-shi Aichi 02, JP)
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