Title:
OPTICAL PATTERN KEY AND KEY DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JPH11270205
Kind Code:
A
Abstract:
To provide a key device having excellent security by using an optical pattern key (a key card).
The key device using the optical pattern key consists of a light-emitting equipment 11 irradiating a mirror section for the optical pattern key K having a built-in galvano-mirror G installed to the main body of the key device with light, a photoreceiver 12 receiving reflected light from the mirror G, a detecting means detecting the place of light reception received by the photoreceiver 12, a collating means collating the place of light reception detected and the place of light reception beforehand stored, and an output means outputting a release signal when coincidence by collation is obtained.
Inventors:
KAWAI SHUICHI
KATO MASAKAZU
HARADA RYOICHI
KATO MASAKAZU
HARADA RYOICHI
Application Number:
JP7523098A
Publication Date:
October 05, 1999
Filing Date:
March 24, 1998
Export Citation:
Assignee:
NIPPON SIGNAL CO LTD
International Classes:
E05B49/00; (IPC1-7): E05B49/00
Attorney, Agent or Firm:
Mitsumasa Ishii
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