Patent ID: 11886545
Assignee: DIVX, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A content distribution network, comprising:
a registration server connected to a network;
a content server connected to the network and to a trusted system;
a first client device including a non-volatile memory that is connected to the network; and
a second client device including a non-volatile memory that is connected to the network;
wherein the registration server is configured to provide the first client device with a first set of activation information in a first format;
wherein the first device is configured to store the first set of activation information in non-volatile memory;
wherein the registration server is configured to provide the second client device with a second set of activation information in a second format;
wherein the second client device is configured to store the second set of activation information in non-volatile memory; and
wherein the content server is configured to:
encrypts a set of video content using a set of content keys that are encrypted using a set of one or more user encryption keys associated with the first client device;
provides the set of content keys for the set of video content to the trusted system;
receives a first request from the first client device for the set of video content;
sends a second request associated with the set of video content to the trusted server system;
receives a playback certification based on the second request and the set of content keys, wherein the playback certification comprises an encrypted copy of the set of content keys, wherein the encrypted copy of the set of content keys are encrypted using at least one user encryption key specific to a unique user account of the client device, wherein the at least one user encryption key specific to the unique user account is known to one or more playback devices associated with the user account and the trusted server system; and
provides the requested set of video content and the playback certification to the first client device.