Title:
アンテナシステム
Document Type and Number:
Japanese Patent JP4088140
Kind Code:
B2
Abstract:
Antennas (8a-8d) are disposed within an antenna body (2) of an antenna system in such a manner as to receive UHF band radio waves coming to the main body (2) from a plurality of first, different directions around the main body (2). Combinations of the antennas (8a-8d) makes the antenna system possible to receive UHF band radio waves coming to the main body (2) from a plurality of second, different directions between adjacent ones of the first directions. Switches (26a-26d) disposed within the main body (2) select one of outputs provided by the individual antennas (8a-8d) and their combinations. An antenna controller (64a), a unit separate from the main body (2), supplies a selection control signal to the switches (26a-26d). The antenna controller (64a) provides such a selection control signal as to successively select the direction of the radio wave to be received in the clockwise direction about the main body (2) each time a first operating element (88a) on a remote control (64b) is operated, and provides such a selection control signal as to successively select the direction of the radio wave to be received in the counterclockwise direction each time a second operating element (88b) on the remote control (64b) is operated.
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Inventors:
Toshiaki Josaka
Kiyotaka Tagawa
Shibuya Eiji
Shingo Fujisawa
Shotai Horii
Kiyotaka Tagawa
Shibuya Eiji
Shingo Fujisawa
Shotai Horii
Application Number:
JP2002338050A
Publication Date:
May 21, 2008
Filing Date:
November 21, 2002
Export Citation:
Assignee:
dx antenna corporation
International Classes:
H04B7/10; H01Q3/24; H01Q21/20
Domestic Patent References:
| JP2001036327A | ||||
| JP63082105A | ||||
| JP6326534A | ||||
| JP6113220A | ||||
| JP2002033688A |
Attorney, Agent or Firm:
Masatoshi Kimura