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
Profiling activity through video surveillance
Polyureas made from aminocrotonates and enaminones
Advocate for facilitating verification for the online presence of an entity
Color image display device, color filter substrate, color pixel array substrate, and electronic device
Non-volatile memory array and device using erase markers
Ventilated vacuum commutation structure
Selecting input/output components of a mobile terminal
  Randomly Featured Patents
Roller mill
Low-loss substrate antenna structure and method of manufacture thereof
Gripping device
System, method and storage medium for controlling a processing system
Methods for producing polypeptides in aspergillus mutant cells
Methods and compositions for deterring abuse of opioid containing dosage forms
Digital filter using intermediate holding registers and common accumulators and multipliers
Method of manufacturing SOI template layer
Rapid application and fixation of dye or brightening agent on synthetic polymer
Mussaenda plant named `Marmalade`