Resources Contact Us Home
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels

Image Number 19 for United States Patent #6449367.

Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure that the digital control information is substantially invisibly and substantially indelibly carried by the information signal. These techniques can provide end-to-end rights management protection of an information signal irrespective of transformations between analog and digital. An electronic appliance can recover the control information and use it for electronic rights management to provide compatibility with a Virtual Distribution Environment. In one example, the system encodes low data rate pointers within high bandwidth time periods of the content signal to improve overall control information read/seek times.

  Recently Added Patents
Tie down strap hook
Method and apparatus for coordinating hopping of resources in wireless communication systems
Method and apparatus for detection of the remote origin fraction of radon present in a measuring site
Potentiometric-sensor chip, potentiometric assay, and assay kit
Wire guide
Method and system for determining a suppression factor of a suppression system and a lithographic apparatus
  Randomly Featured Patents
Video disk, recording apparatus of video disk, and its reproducing apparatus
Electroluminescent lamp devices and their manufacture
Systematic distillation of status data relating to regimen compliance
Display and method for repairing defects thereof
Optical interconnection circuit among wavelength multiplexing chips, electro-optical device, and electronic apparatus
Method of performing high-efficiency machining by high-density radical reaction using a rotating electrode, device for performing the method and the rotating electrode used therefor
Self-locating remote monitoring systems
Construction vehicle
Hi-rise apartment structure
Safety lock-on motor control