# US 2014/0196079 A1 · Video distribution and playback

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- Number: US 2014/0196079 A1
- Document ID: US20140196079A1
- Status: Published application
- Kind: A1
- Application number: 14/050,240
- Filed: 2013-10-09
- Published: 2014-07-10
- Earliest claimed: 2012-10-10
- Assignees: Red.Com, Inc.
- Applicants: RED.COM, Inc.
- Inventors: James H. Jannard; Peter Jarred Land; Rob Wouter Lohman; Jon Flickinger; Jon Anthony Farhat; Stuart J. English; Thomas Graeme Nattress
- Web page: https://patentgrep.com/patent/US20140196079A1

## CPC

- H04N 21/26613: {for generating or managing keys in general (key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04)}
- H04L 9/0825: {using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates}
- H04N 7/1675: {Providing digital key or authorisation information for generation or regeneration of the scrambling sequence (pseudo-random number generators in general G06F7/58)}
- H04L 2209/60: Digital content management, e.g. content distribution
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Systems and methods are disclosed for providing a content delivery network with one or more network-connected audiovisual players. A content delivery network provider can provide an access module residing within a network-connected audiovisual player wherein the access module can be configured to control the player. The access module can be configured to function within a gateway environment on the player such that the gateway environment passes commands from the access module to the firmware or secure module on the player operating in a secure environment. As a result, each player with the access module can become a part of the content delivery network as the content delivery network provider can control the network-connected audiovisual players. The content delivery network can implement multi-level access controls to licenses and encryption keys to secure audiovisual content.

## Claims

### Claim 1

A content distribution system comprising:
a key system comprising one or more computing devices comprising computer hardware, the key system configured to:
using a symmetric key, encrypt an encoded asset to generate an encrypted asset;
using a first asymmetric key, encrypt a modified license and the symmetric key to generate a base-encrypted license and symmetric key, the modified license derived from an author license;
using a second asymmetric key, encrypt the base-encrypted license and symmetric key to generate a target-encrypted license and symmetric key; and
a distribution server comprising one or more computing devices comprising computer hardware, the distribution system configured to transmit the encrypted asset and the target-encrypted license and symmetric key to a recipient system,
wherein the first asymmetric key comprises a public key corresponding to a private key on a playback system, and
wherein the second asymmetric key comprises a public key corresponding to a private key on the recipient system.

### Claim 2 (depends on 1)

The content distribution system of claim 1, wherein the key module is further configured to generate the symmetric key.

### Claim 3 (depends on 2)

The content distribution system of claim 2, wherein the key module randomly generates the symmetric key.

### Claim 4 (depends on 1)

The content distribution system of claim 1, wherein the author license comprises restrictions on access to the asset.

### Claim 5 (depends on 4)

The content distribution system of claim 4, wherein the modified license comprises restrictions on access to the asset added to the author license.

### Claim 6 (depends on 1)

The content distribution system of claim 1, wherein the encoded asset comprises:
a plurality of clips of audiovisual content, and
a playlist comprising:
a list of a subset of the plurality of clips of audiovisual content, and
an order in which to present the subset of the plurality of clips of audiovisual content.

### Claim 7 (depends on 1)

The content distribution system of claim 1, wherein the encoded asset comprises:
a plurality of clips of audiovisual content,
a plurality of versions of an audiovisual presentation, and
for each of the plurality of versions of the audiovisual presentation, a playlist comprising:
a list of a subset of the plurality of clips of audiovisual content, and
an order in which to present the subset of the plurality of clips of audiovisual content.

### Claim 8 (depends on 1)

The content distribution system of claim 1, wherein the playback system is the recipient system.

### Claim 9 (depends on 1)

The content distribution system of claim 1, wherein the recipient system is a content distributor.

### Claim 10 (depends on 1)

The content distribution system of claim 1, further comprising a control system configured to provide commands to the recipient system, the commands being selected from a library of operations on the recipient system.

### Claim 11 (depends on 10)

The content distribution system of claim 10, wherein the commands are transmitted to the recipient system separate from transmission of the encoded asset.

### Claim 12 (depends on 10)

The content distribution system of claim 10, wherein the commands are transmitted to the recipient system separate from transmission of the target-encoded license and symmetric key.

### Claim 13 (depends on 1)

The content distribution system of claim 1, wherein the one or more computing devices of the key system are the same as the one or more computing devices of the distribution server.