Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Plants and seeds of corn variety CV294874
Method and apparatus for charging a power pack of a portable electronic device
Nanocatalysts structure, process for the preparation and use thereof
State control of remote hosts for management of distributed applications
Toy vehicle housing
Curved structural part made of composite material and a process for manufacturing such a part
Watch chain
  Randomly Featured Patents
Composite hockey stick shaft and process for making same
Motor vehicle
Household tray with a removable base
Low helium permeability atomic frequency standard cell and method for forming same
Drum pedal unit pedal position adjustment
School desk
Pressure override control for air treatment unit
Method for transmitting signals in a radio communications system
Notch cutting circuit with minimal power dissipation
Method for assessing and correcting individual components of a non-monolithic imaging assembly