The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2008
Filed:
Mar. 18, 2003
Jae Yeon Lee, Daejeon, KR;
Yun Koo Chung, Daejeon, KR;
Jung Soh, Daejeon, KR;
Byung Tae Chun, Daejeon, KR;
Ho Sub Yoon, Daejeon, KR;
Kyu Seo Han, Daejeon, KR;
Do-hyung Kim, Busan, KR;
Yongwha Chung, Daejeon, KR;
Jae Yeon Lee, Daejeon, KR;
Yun Koo Chung, Daejeon, KR;
Jung Soh, Daejeon, KR;
Byung Tae Chun, Daejeon, KR;
Ho Sub Yoon, Daejeon, KR;
Kyu Seo Han, Daejeon, KR;
Do-Hyung Kim, Busan, KR;
Yongwha Chung, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
In an apparatus for online signature verification, a signature data input unit digitalizes a locus of a user signature and reads the locus as a sequence of points. A first and a second pattern transform unit performs a speed equalization and a velocity transform on the signature sequence and generates a first and a second transformed pattern sequence, respectively. A characteristics extraction unit extracts three characteristics vectors from the signature sequence, the first and the second transformed pattern sequence, respectively, to thereby generate the three characteristics vectors. A difference vector estimation unit generates a difference vector. A determination unit determines whether an input signature and the reference signature are signed by a single person.