Invention Grant
- Patent Title: Method and apparatus for analog insertion of low frequency watermarks
- Patent Title (中): 用于模拟插入低频水印的方法和装置
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Application No.: US10856022Application Date: 2004-05-28
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Publication No.: US07756288B2Publication Date: 2010-07-13
- Inventor: Jeffrey Lubin , Christos Alkivladis Polyzois
- Applicant: Jeffrey Lubin , Christos Alkivladis Polyzois
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: G06K9/00
- IPC: G06K9/00
Abstract:
A method and apparatus for inserting a watermark onto an illuminated image sequence. A light modulator modulates a light source. A controller controls the light modulator such that a low frequency watermark is inserted onto the illuminated image sequence.
Public/Granted literature
- US20040240705A1 Method and apparatus for analog insertion of low frequency watermarks Public/Granted day:2004-12-02
Information query
