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Title:
認証情報入力装置、サーバ装置、認証システム及びプログラム
Document Type and Number:
Japanese Patent JP5732439
Kind Code:
B2
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Inventors:
Takahisa Shirakawa
Application Number:
JP2012173233A
Publication Date:
June 10, 2015
Filing Date:
August 03, 2012
Export Citation:
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Assignee:
NEC Personal Computer Co., Ltd.
International Classes:
G06F21/36
Domestic Patent References:
JP2011128726A
JP2002197062A
JP2006163825A
JP4916583B2
JP2002189967A
JP2004157675A
JP2005507518A
JP2006287843A
JP2008217716A
Foreign References:
WO2010092922A1
US20110202982
Other References:
小林 司,画像認識の困難性を利用したCAPTCHA方式の提案 Proposal of CAPTCHA Method based on the Difficulty of Image Recognition,映像情報メディア学会技術報告,日本,(社)映像情報メディア学会,2010年 9月14日, Vol.34,No.37,第37-42頁
Attorney, Agent or Firm:
Takao Maruyama



 
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