Title:
利用者認証装置および入退室管理装置
Document Type and Number:
Japanese Patent JP4412162
Kind Code:
B2
Abstract:
A user authentication system of the present invention includes: a first wireless tag having first ID data about a user and a first antenna for transmitting the first ID data; a second wireless tag having second ID data different from the first ID data, and a second antenna, perpendicular to the first antenna, for transmitting the second ID data; a wireless-tag receiver for receiving the first ID data transmitted from the first antenna and the second ID data transmitted from the second antenna; and a use-permission determining apparatus for determining whether the ID data received by the receiver matches pre-registered ID data, and for determining, based on timing of or counts of receptions of the first ID data and the second ID data received during a predetermined period of time, whether use is permitted.
Inventors:
Takahide Hirai
Koichi Sasakawa
Koichi Sasakawa
Application Number:
JP2004353871A
Publication Date:
February 10, 2010
Filing Date:
December 07, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
E05B49/00; G07C9/00
Domestic Patent References:
| JP10111358A | ||||
| JP2002183695A | ||||
| JP2001325569A | ||||
| JP5067258A | ||||
| JP2001309453A | ||||
| JP2004220207A |
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka