US 10,951,930 B2Granted

Adaptive content delivery network

AssigneeV-Nova International Limited

InventorsGaurav Mittal, Simone Ferrara, Guido Meardi

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Abstract

A content delivery network (100) for streaming digital video content across a data network. The content delivery network (100) is configured to receive digital video content. The content delivery network is configured to store the digital video content in a storage format comprising a base layer (B) and an enhancement layer (E), wherein the base layer (B) is decodable to present the digital video content at a base level of video reproduction quality, and the enhancement layer (E) is decodable with the base layer to present the digital video content at an enhanced level of video reproduction quality which is higher than the base level of reproduction quality. The content delivery network (100) is configured to determine, based on a target quality which is to be provided to a client device, which layers to use in order to achieve the target quality; and to use the determined layers (B, E) to provide the client device with the digital content at the target level of quality.

Claims17

Dependent claims

A content delivery network for streaming digital video content across a data network, the content delivery network comprising an origin server and at least one delivery server, the content delivery network being configured to:

receive digital video content;
store the digital video content in a storage format comprising a base layer and an enhancement layer, wherein the base layer is stored on the delivery server and is decodable to present the digital video content at a base level of video reproduction quality, wherein the enhancement layer is stored on the origin server and is decodable with the base layer to present the digital video content at an enhanced level of video reproduction quality which is higher than the base level of reproduction quality, wherein the at least one delivery server is configured to deliver the digital content to a client device communicatively connected to the delivery server, and wherein the at least one delivery server is configured to request the enhancement layer of the digital content from the origin server when the client device is capable of reproducing the digital video content at a level of quality higher than the base level of quality decodable from the base layer;
receive a request from the client device for the digital video content, the client device having capability to reproduce the digital video content in a particular format at a target level of quality;
determine, based on the capability to reproduce the digital video content at a target level of quality, which layers to provide to the client device in order to achieve the target quality;
transcode at least the base layer of the determined layers of the digital video content from a storage format to a format compatible with the capabilities of the client device;
and
provide, by the delivery server, the determined layers including the transcoded layers to the client device such that the client device can reproduce the digital video content at the target level of quality.

4 more elements

A method of streaming digital video content across a data network, the method comprising:

receiving digital video content at a content delivery network;
storing the digital video content in a storage format comprising a base layer and an enhancement layer, wherein the base layer is stored on a delivery server and is decodable to present the digital video content at a base level of video reproduction quality, wherein the enhancement layer is stored on an origin server and is decodable with the base layer to present the digital video content at an enhanced level of video reproduction quality which is higher than the base level of reproduction quality, wherein the delivery server is configured to deliver the digital content to a client device communicatively connected to the delivery server, and wherein the delivery server is configured to request the enhancement layer of the digital content from the origin server when the client device is capable of reproducing the digital video content at a level of quality higher than the base level of quality;
receiving a request from the client device for the digital video content, the client device having capability to reproduce the digital video content in a particular format at a target level of quality;
determining, based the capability to reproduce the digital video content at a target level of quality, which layers to provide to the client device in order to achieve the target quality;
transcoding at least the base layer of the determined layers of the digital video content from a storage format to a format compatible with the capabilities of the client device;
and
providing, by the delivery server, the determined layers including the transcoded layers to the client device such that the client device can reproduce the digital video content at the target level of quality.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/324,431Filed 9 Aug 2017
Priority: GB 16136979 Aug 2016
Published: US 2019/0182518 A113 Jun 2019
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04N 21/23439
Involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements: for…
H04L 65/70
Network streaming of media packets: media network packetisation
H04L 65/752
Media network packet handling: adapting media to network capabilities
H04N 21/2347
Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs: involving video stream…