Resources Contact Us Home
Method and system for watermark detection

Image Number 4 for United States Patent #7133536.

A system and method of detecting and authenticating a watermark on a document such as a check which is supposed to include a watermark having known characteristics to verify the authenticity of the document. A digitized image of the document is stored and processed through transformation which generates a frequency distribution. That frequency distribution is processed to determine one or more harmonic compared to a stored value associated with the document to determine that a watermark exists and it is the correct watermark.

  Recently Added Patents
Monitoring apparatus for monitoring communication configurations of client devices
Software management system for network data processing systems
SIC semiconductor device and method for manufacturing the same
Method for controlling a motor
5-lipoxygenase-activating protein (FLAP) inhibitors
Advertising apparatus
Multiple carrier compression scheme
  Randomly Featured Patents
Methods and devices for the suppression of harmonics
Efficient delayed overhead processing techniques
Motorized access apparatus for elevated areas
Method for forming a lightweight cementitious structural product and product formed thereby
Method of making a hydraulic pump housing
Support stand
Case structure replacement in a data flow diagram
Adaptive writing method for high-density optical recording apparatus and circuit thereof
Quick release socket
Method of manufacturing multilayer printed wiring board