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. 13, 2012
Filed:
Mar. 17, 2008
Donglin Wang, Beijing, CN;
Shutian Yin, Beijing, CN;
Yunming Zhang, Beijing, CN;
Ningsheng Liu, Beijing, CN;
Yuansong Liang, Beijing, CN;
Changwei Liu, Beijing, CN;
DE Ouyang, Beijing, CN;
Peng Gao, Beijing, CN;
Yongzhi Lou, Beijing, CN;
Donglin Wang, Beijing, CN;
Shutian Yin, Beijing, CN;
Yunming Zhang, Beijing, CN;
Ningsheng Liu, Beijing, CN;
Yuansong Liang, Beijing, CN;
Changwei Liu, Beijing, CN;
De Ouyang, Beijing, CN;
Peng Gao, Beijing, CN;
Yongzhi Lou, Beijing, CN;
Beijing Sursen International Information Tech Co., Beijing, CN;
Abstract
A novel method is disclosed for embedding hidden information in a document comprising characters, including: determining hidden information to be embedded in each class of layout transformation respectively; acquiring a code sequence for each class of layout transformation by coding the hidden information to be embedded in the class of layout transformation; performing layout transformation on characters from the document according to the acquired code sequence for each class of layout transformation respectively.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile