Title:
アプリケーションを感知する無線システム
Document Type and Number:
Japanese Patent JP4660542
Kind Code:
B2
Abstract:
A radio system for sensing the spatial configuration of a physical object comprising a transmitter (102) which sends a query message to a transponder (104) having at least one antenna (106). A radio frequency shield (108) is moveably interposable between the transmitter and one or more antennas and thereby attenuates the signal strength of the query message received at an antenna. In any state of spatial configuration of the physical object, the transponder is able to receive the query message and, in reply, send a response message containing data determined according to the signal strength of the query message received at the one or more antennas.
Inventors:
Fontaine Wilhelms F Jay
Application Number:
JP2007512664A
Publication Date:
March 30, 2011
Filing Date:
May 04, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H04B1/59; G01B7/24; G01C9/06; G01D5/48; G01S7/03; G01S13/74; G06K7/00; G06K19/07; H01Q17/00; H04B5/00; H04B5/02
Domestic Patent References:
| JP2002077972A | ||||
| JP2001018748A | ||||
| JP2003299634A | ||||
| JP2000198439A |
Attorney, Agent or Firm:
Hirohito Katsunuma
Yasukazu Sato
Yasushi Kawasaki
Takeshi Sekine
Akaoka Akira
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen
Yasukazu Sato
Yasushi Kawasaki
Takeshi Sekine
Akaoka Akira
Susumu Tsugaru
Akihiko Miyazaki
Fueda Shusen