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
Range extension techniques for a wireless local area network
Process for producing .beta.-sialon fluorescent material
Generating a representation of an object of interest
Spin transition material
Systems and methods for generating customized user interfaces
Curable sublimation marking material and sublimation transfer process using same
MIM capacitor and associated production method
  Randomly Featured Patents
System for pressure-modulated shaping of the course of injection
Kite
Image pick-up device
Raman amplifier utilizing pump modulation for expanding gain band width
High performance white light-emitting OLED device
Dowel transfer station in dowel driving devices
Dispenser
Microwave oven
Folding knife with puzzle piece locking mechanism
Method for preparing diaryl carbonates employing hexaalkylguanidinium halides