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
Generation of uniform fragments of nucleic acids using patterned substrates
Millimeter wave imaging method and system to detect concealed objects
Clock distribution circuit
Passive millimeter wave differential interference contrast polarimetry
System and method for identifying a target signal in an optical transport network frame structure
DNA promoters and anthrax vaccines
Method for preventing wheat from mycotoxin contamination
  Randomly Featured Patents
System for indentification of pathogens
System and method for cleaning and/or treating surfaces of objects
Use of silica catalyst for selective production of lactams
Method for manufacturing semiconductor device
Mechanical back scratcher
Solar charged hybrid power system
Remote control unit for a television
System and method for run-time value tracking during execution
Treatment of dysfunctional vascular endothelium using activated protein C
Ultrasonic transducer and ultrasonic motor