Title:
DEVICE AND METHOD FOR JUDGING ELECTROSTATIC CAPACITY TO BE AUTHENTICATED
Document Type and Number:
WIPO Patent Application WO/2008/015725
Kind Code:
A1
Abstract:
It is possible to provide a device to be built in a biometric authentication device
for judging an electrostatic capacity to be authenticated which can judge an
electrostatic capacity to be authenticated with a simple configuration. The
device for judging an electrostatic capacity to be authenticated judges a pulse
width of a biometric capacity pulse having a pulse width corresponding to an electrostatic
capacity of an authentication object as a part of a living body placed between
electrodes generated by a biometric capacity pulse output unit, by using a first
judgment pulse and a second judgment pulse. The first judgment pulse is outputted
with a predetermined delay from the biometric capacity pulse and the second judgment
pulse is outputted with a delay larger than the predetermined delay.
Inventors:
NIINUMA, Koichiro (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
新沼 厚一郎 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
SHINZAKI, Takashi (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
新沼 厚一郎 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
SHINZAKI, Takashi (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
Application Number:
JP2006/315122
Publication Date:
February 07, 2008
Filing Date:
July 31, 2006
Export Citation:
Assignee:
FUJITSU LIMITED (1-1 Kamikodanaka 4-chome, Nakahara-ku Kawasaki-sh, Kanagawa 88, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
NIINUMA, Koichiro (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
新沼 厚一郎 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
富士通株式会社 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 Kanagawa, 2118588, JP)
NIINUMA, Koichiro (1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki-sh, Kanagawa 88, 2118588, JP)
新沼 厚一郎 (〒88 神奈川県川崎市中原区上小田中４丁目１番１号 富士通株式会社内 Kanagawa, 2118588, JP)
International Classes:
A61B5/117; G06T1/00; A61B5/117; G06T1/00
Attorney, Agent or Firm:
OSUGA, Yoshiyuki (3rd Fl, Nibancho Bldg.8-20, Nibanch, Chiyoda-ku Tokyo 84, 1020084, JP)
Download PDF: