Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Rights management system for streamed multimedia content










Image Number 5 for United States Patent #7693280.

A sequence of content keys are shared between a receiver of pieces of digital content and a computing device upon which the content is to be rendered. The receiver encrypts each piece of content according to a corresponding content key in the sequence and forwards the encrypted content to the computing device and the computing device decrypts the encrypted content according to the corresponding content key. The receiver initially transmits to the computing device an initialization digital license with an initial content key (CK0) therein. Each of the receiver and the computing device derive a new content key (CKx) in the sequence from the initial content key (CK(0)) in the sequence on an as-needed basis and in a coordinated fashion. The initialization license is required only once for the sequence of content keys, and the receiver need not explicitly communicate (CKx) to the computing device for each piece of content.








 
 
  Recently Added Patents
Transformer and flat panel display device including the same
Toothbrush
Transmitter control in communication systems
Methods of making water-soluble film with resistance to solubility prior to being immersed in water
Mobile wireless device with multi-band antenna and related methods
Photoelectric conversion element, method of manufacturing photoelectric conversion element and solar cell
Oil pressure control apparatus
  Randomly Featured Patents
Cylindrically formed catalyst for the oxychlorination of ethylene
Nitrous oxide, fuel injection combined plate and nozzle unit
Headlamp and method for forming the same
Capacitor for DRAM connector
Phase shifters for beamforming applications
Method of forming film pattern, device for forming film pattern, conductive film wiring, electro-optical device, electronic device, and non-contact card medium
Heating system for oven zone location
Leakage path simulation system and leakage path simulation method
Ice coffee maker
Display case with lens lighting system