Invention Grant
- Patent Title: Watermarking using multiple watermarks and keys, including keys dependent on the host signal
- Patent Title (中): 使用多个水印和键的水印，包括依赖主机信号的键
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Application No.: US11929137Application Date: 2007-10-30
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Publication No.: US08131007B2Publication Date: 2012-03-06
- Inventor: Ahmed Tewfik , Bin Zhu , Mitch Swanson
- Applicant: Ahmed Tewfik , Bin Zhu , Mitch Swanson
- Applicant Address: US MN St. Paul
- Assignee: Regents of the University of Minnesota
- Current Assignee: Regents of the University of Minnesota
- Current Assignee Address: US MN St. Paul
- Main IPC: H04K1/00
- IPC: H04K1/00
Abstract:
A method of embedding a watermarking in a host signal computes a first watermark depending on a particular party and computes a second watermark depending on the host signal. The method embeds the first and second watermarks in the host signal. At least one of the watermarks is embedded using a key derived from the host signal. In particular, one of the watermarks is embedded with a key derived from the host signal.
Public/Granted literature
- US20080226121A1 Watermarking Using Multiple Watermarks and Keys, Including Keys Dependent on the Host Signal Public/Granted day:2008-09-18
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