Method and device for managing multimedia data

Patent metadata

Field	Value
Publication number	US-10645425-B2
Application number	US-201515318285-A
Country	US
Kind code	B2
Filing date	Jun 15, 2015
Priority date	Jun 13, 2014
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A method for managing multimedia data by a contents server comprises the steps of: generating one or more chunks from an input image; generating chunk information of the input image including a list of the generated chunks; performing an identity check among chunks on the basis of the chunk information of the input image and chunk information stored in the contents server; and updating the stored chunk information according to a result of the identity check, wherein the chunks are a meaningful scene unit in an image.

First claim

The invention claimed is:

1. A method for managing multimedia data in a content server, the method comprising:
receiving, from a cache server based on receiving a request of a media component from a client, a first request message requesting chunk information for the media component, wherein the media component is segmented into a plurality of chunks and the chunk information includes an identifier (ID) of each of the plurality of chunks, each ID being a hash value generated based on media data in each chunk;
in response to the first request message, transmitting, to the cache server, a first response message including the chunk information, wherein each ID in the chunk information is used for checking a sameness or a similarity between a corresponding chunk of the plurality of chunks and at least one cached chunk stored in the cache server;
receiving, from the cache server, a second request message requesting at least one first chunk of the plurality of chunks based on a result of the checking; and
in response to the second request message, transmitting, to the cache server, a second response message including the at least one first chunk,
wherein the media component is reconstructed based on the at least one first chunk received from the content server and one or more cached chunk stored in the cache server and the reconstructed media component is transmitted to the client.

2. The method of claim 1 , wherein the at least one first chunk requested from the cache server is not stored in the cache server.

3. The method of claim 2 , wherein the at least one first chunk transmitted from the content server is stored in the cache server.

4. The method of claim 1 , wherein the at least one first chunk includes media data.

5. The method of claim 1 , wherein the at least one first chunk is a next sequential chunk of the media component that is not stored in the cache server.

6. The method of claim 5 , wherein a second chunk that is not sequential with the at least one first chunk is excluded from the reconstructed media component.

7. A content server for managing multimedia data, the content server comprising:
a transceiver configured to transmit and receive a data; and
at least one processor configured to:
receive, from a cache server via the transceiver based on receiving a request of a media component from a client, a first request message requesting chunk information for the media component, wherein the media component is segmented into a plurality of chunks and the chunk information includes an identifier (ID) of each of the plurality of chunks, each ID being a hash value generated based on media data in each chunk,
in response to the first request message, transmit, to the cache server via the transceiver, a first response message including the chunk information, wherein each ID in the chunk information is used for checking a sameness or a similarity between a corresponding chunk of the plurality of chunks and at least one cached chunk stored in the cache server,
receive, from the cache server via the transceiver, a second request message requesting at least one first chunk of the plurality of chunks based on a result of the checking, and
in response to the second request message, transmit, to the cache server via the transceiver, a second response message including the at least one first chunk,

wherein the media component is reconstructed based on the at least one first chunk received from the content server and one or more cached chunk stored in the cache server and the reconstructed media component is transmitted to the client.

8. The content server of claim 7 , wherein the at least one first chunk requested from the cache server is not stored in the cache server.

9. The content server of claim 8 , wherein the at least one first chunk transmitted from the content server is stored in the cache server.

10. The content server of claim 7 , wherein the at least one first chunk includes media data.

11. The content server of claim 7 , wherein the at least one first chunk is a next sequential chunk of the media component that is not stored in the cache server.

12. The content server of claim 11 , wherein a second chunk that is not sequential with the at least one first chunk excluded from the reconstructed media component.

Assignees

• Samsung Electronics Co Ltd
• Korea Advanced Inst Sci & Tech

Inventors

• Park Kyung-Mo
• So Young-Wan
• Nam Gi-Young
• Park Kyoung-Soo
• Bae Sang-Wook
• Han Dong-Su
• Song Jae-Yeon

Classifications

• H04N21/23418

  involving operations for analysing video streams, e.g. detecting features or characteristics (television picture signal circuitry for scene change detection H04N5/147; filtering for image enhancement G06T5/00; methods or arrangements for recognising scenes G06V20/00; arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59) · CPC title

• H04N21/222

  Secondary servers, e.g. proxy server, cable television Head-end {(provisioning of proxy services in data packet switching networks H04L67/56)} · CPC title

• H04N21/8455

  involving pointers to the content, e.g. pointers to the I-frames of the video stream · CPC title

• H04N21/8451

  using Advanced Video Coding [AVC] · CPC title

• H04N21/8456

  by decomposing the content in the time domain, e.g. in time segments · CPC title