Title:
WIRELESS COMMUNICATION TERMINAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2008/029442
Kind Code:
A1
Abstract:
A wireless communication terminal apparatus that can utilize a feature of a multiantenna system
to automatically set an image display direction in accordance with a placement status
of the wireless communication terminal apparatus and that can be provided at
a low cost. This apparatus uses a pair of polarization reception antennas (121,122),
which are disposed orthogonally to each other, to receive radio waves transmitted
by a base station apparatus. A power ratio calculating part (260) calculates
a magnitude ratio of reception powers of the two reception antennas (121,122),
that is, a power ratio = Abs(b)/(Abs(a) + Abs(b)), where “a” and
“b” are complex numbers. The power ratio calculating part (260)
then determines, based on the calculation result, a placement status of the wireless
communication terminal apparatus (100), that is, whether it is placed like a
portrait or a landscape, and then outputs the determination result to a display
control part (250). The display control part (250) sets an image display direction
of a display part (110) in accordance with the placement status of the wireless
communication terminal apparatus (100).
Inventors:
SOTOYAMA TAKAYUKI
HIRADATE IKUO
HIRADATE IKUO
Application Number:
PCT/JP2006/317478
Publication Date:
March 13, 2008
Filing Date:
September 04, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
SOTOYAMA TAKAYUKI
HIRADATE IKUO
SOTOYAMA TAKAYUKI
HIRADATE IKUO
International Classes:
H04B1/16; H04B1/40; H04B7/26; H04M1/02
Foreign References:
| JP2005318164A | 2005-11-10 | |||
| JP2001197555A | 2001-07-19 | |||
| JP2000059474A | 2000-02-25 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (Shintoshicenter Bldg.24-1, Tsurumaki 1-chom, Tama-shi Tokyo 34, JP)
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