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
Display panel and gate driving circuit and driving method for gate driving circuit
Liquid crystal display wherein the data lines covered by each pixel electrode are supplied with data signals of opposite polarities
System and method for content delivery
System and method for providing an extended platform for an operating system
Inverter, NAND gate, and NOR gate
Method and system for implementing power detection
Soybean cultivar CL0911444
  Randomly Featured Patents
Method for reducing sensitivity modulation and lag in electronic imagers
Ink-jet head and method of fabricating same
Sound reproduction in portable electronic equipment
Full function downhole valve and method of operating the valve
Occupant weight detection system having linked weight detection means with maintained positional relationships
Image-capturing apparatus and driving method of optical system
Methods and apparatus for providing a compressed network in a multi-processing system
Composition for removing polymer residue of photosensitive etching-resistant layer
Chub packaging machine clipping mechanism
Timing for spread-spectrum communication across noisy media