Resources Contact Us Home
Protection method for preventing hard copy of document from being released or reproduced

Image Number 9 for United States Patent #8085972.

A protection method for preventing a hard copy of a document from being released or reproduced is provided. The protection method comprises: selecting a pattern with a closed contour line and utilizing a level set method to process the pattern to generate at least a watermark; and embedding the watermark into the document. In addition, the protection method can further comprise: detecting the hard copy of the document to determine whether at least a watermark exists in the hard copy of the document; and forbidding releasing or reproducing the document when the watermark is detected in the hard copy of the document.

  Recently Added Patents
Method and apparatus for supporting delivery, sale and billing of perishable and time-sensitive goods such as newspapers, periodicals and direct marketing and promotional materials
Method of measuring a displacement amount for an automobile suspension assembly
Video reproducing apparatus and video reproducing method
Method and apparatus for laser strip splicing
Communication system including relay station and data frame for the communication system
Method for conductivity control of (Al,In,Ga,B)N
Dynamic reconstruction of a calibration state of an absorption spectrometer
  Randomly Featured Patents
Toddler bed
Semiconductor device having particular impurity density characteristics
Apparatus for feeding slivers to a draw frame
Oxygen-transporting albumin-based blood replacement composition and blood volume expander
Pull toy
Composition and method for enhancing male fertility and libido
Block copolymers made by radiation crosslinking of miscible mixture of homopolymers
Airfoil performance monitor
Apparatus for securing parts