Title: Text digital water mark technology based on symbol redundancy encoding
Application Number: 200510067146 Application Date: 2005.04.18
Publication Number: 1674055 Publication Date: 2005.09.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09C1/00,G06T1/00
Applicant(s) Name: Liu Dong Address: 610074
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The present invention provides hidden data communication method with redundant code preserving hidden information and relevant text digital watermark embedding, displaying, printing and extracting technology. The present invention includes several closely related contents: methods of coding symbols into digital codes; method of hidden data communication, design method of file with two kinds of fonts, text digital watermark technology based on font text, and the specific realizing methods of text digital watermark technology. The text digital watermark technology of the present invention has the features of great watermark capacity, less visual influence, powerful attack resistance, etc.
Time: 9