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
Light-emitting device package structure
Generating wiki pages from content and transformation objects
Lens module and method for manufacturing thereof
Switchable memory diodes based on ferroelectric/conjugated polymer heterostructures and/or their composites
Reconfigurable barrel shifter and rotator
Radio frequency power delivery system
Semiconductor memory device, method of controlling read preamble signal thereof, and data transmission method
  Randomly Featured Patents
Device for simultaneously holding by suction and transporting a sheet
Millimeter wave antenna
Coccidial vaccine and methods of making and using same
Method and apparatus for placing dry or liquid materials into the soil subsurface without tillage tools
Bed riser support
Bioresorbable annuloplasty prosthesis
Spin coating device
Method and apparatus for coupling noise reduction in a semiconductor device
Process for the production of mouldings
Zoom lens, optical apparatus and manufacturing method