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:
Jan. 22, 2013
Filed:
Sep. 21, 2009
Weisheng LI, Bothell, WA (US);
Bin Benjamin Zhu, Edina, MN (US);
Hai Xin, Beijing, CN;
Ning Xu, Changzhou, CN;
Jia Liu, Beijing, CN;
Weisheng Li, Bothell, WA (US);
Bin Benjamin Zhu, Edina, MN (US);
Hai Xin, Beijing, CN;
Ning Xu, Changzhou, CN;
Jia Liu, Beijing, CN;
Microsoft Corp., Redmond, WA (US);
Abstract
The HIP creation technique described herein pertains to a technique for creating a human interactive proof (HIP) by applying tearing and/or a conformal transformation to a string of characters while maintaining readability of text. In one embodiment, the technique tears a character string into two or more pieces and applies conformal transformation to warp the pieces in order to create a HIP. The transformation changes the shape and orientation of the characters but preserves angles of the characters which makes it easy for humans to recognize the characters after the transformation. Other embodiments of the technique create HIPs by applying tearing only to a string of characters, or by applying conformal transformation only to the character string.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile