Title:
LOCKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/066029
Kind Code:
A1
Abstract:
Provided is a locking device for locking and unlocking the lock of a door for a closed
space including the door. The locking device comprises a first transmission
antenna for transmitting a first signal to the area including the outside of the
closed space, a second transmission antenna for transmitting a second signal
to the inside of the closed space, a key which transmits a first response signal
when it receives a first signal and does not receive a second signal and transmits
a second response signal when it receives the first signal and also receives the
second signal, a receiving antenna for receiving at least the first response
signal from the key, and a control unit for controlling the permission or prohibition
of the locking and unlocking of the lock according to at least the fact whether
the receiving antenna receives the first response signal or not.
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Inventors:
KAIHORI HIROKI
OKADA HIROYASU
OCHI MASAAKI
FUJII KENJI
OKADA HIROYASU
OCHI MASAAKI
FUJII KENJI
Application Number:
PCT/JP2007/072831
Publication Date:
June 05, 2008
Filing Date:
November 27, 2007
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
KAIHORI HIROKI
OKADA HIROYASU
OCHI MASAAKI
FUJII KENJI
KAIHORI HIROKI
OKADA HIROYASU
OCHI MASAAKI
FUJII KENJI
International Classes:
E05B49/00; B60J5/00; B60R25/01; B60R25/24
Foreign References:
| JP2003106019A | 2003-04-09 | |||
| JP2006028838A | 2006-02-02 | |||
| JP2004156238A | 2004-06-03 | |||
| JP2002201838A | 2002-07-19 |
Attorney, Agent or Firm:
IWAHASHI, Fumio et al. (1006, Oaza Kadoma, Kadoma-shi, Osaka 01, JP)
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