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
Method and system of extending battery life of a wireless microphone unit
Image forming apparatus acquiring image processing time detected when the acquired time is longer that the previously set time and to correct output image density using generated patch pattern
Electromagnetic probe for measuring properties of a subsurface formation
Flexible pouch
Automated dynamic differential data processing
Image capture apparatus and program
Buckle
  Randomly Featured Patents
Digital filter
Diffusing sheet, surface light source device, and transmission type display
System and method for services access
Redundant join elimination and sub-query elimination using subsumption
Manufacturing method of CMOS transistor
Manually controlled switching apparatus
Method and system for providing fault tolerant access between clients and a server
Applications of laser-processed substrate for molecular diagnostics
System and method for facilitating a subsidiary card account with controlled spending capability
Communications apparatus and methods for adaptive signal processing based on mobility characteristics