PRACTICAL DELIVERY OF HIGH QUALITY VIDEO USING DYNAMIC ADAPTIVE HYPERTEXT TRANSPORT PROTOCOL (HTTP) STREAMING (DASH) WITHOUT USING HTTP IN A BROADCAST NETWORK

• US 20150100996A1
• Filed: 10/06/2014
• Published: 04/09/2015
• Est. Priority Date: 10/07/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Freeman, Martin, Foote, William, Lim, Youngkwon
• Granted Patent: US 9,807,452 B2
• Time in Patent Office: Days
• US Class Current: 725/110
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2393 involving handling client requests scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/26258 for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list retrieval of multimedia data based on playlists G06F16/40
• CPC Class Codes: H04N 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/4385 Multiplex stream processing, e.g. multiplex stream decrypting
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments
• CPC Class Codes: H04N 21/85406 involving a specific file format, e.g. MP4 format

Abstract

A method for content delivery using dynamic adaptive hypertext transport protocol (HTTP) streaming (DASH) without using HTTP. The method includes receiving a media presentation description (MPD) file and one or more DASH segments by a client device. Information in the MPD file is used to filter the one or more DASH segments. The filtered DASH segments are stored in a segments buffer. Particular DASH segments are requested from the segments buffer by the client device based on the information.

Claims

1. A method for content delivery using dynamic adaptive hypertext transport protocol (HTTP) streaming (DASH) without using HTTP, comprising:

receiving a media presentation description (MPD) file and one or more DASH segments by a client device;

using information in the MPD file to filter the one or more DASH segments;

storing the filtered one or more DASH segments in a segments buffer; and

requesting one or more particular DASH segments from the segments buffer by the client device based on the information.

2. The method of claim 1, wherein the information comprises associated uniform resource locator (URL) information.

3. The method of claim 2, wherein the one or more DASH segments and the associated URL information are stored together in the segments buffer.

4. The method of claim 3, further comprising:

tuning to a service by the client device for receiving the one or more DASH segments over multimedia multiplexing transport protocol (MMTP) without using HTTP.

5. The method of claim 4, wherein the client device comprises the segments buffer without an HTTP cache.

6. The method of claim 1, wherein the one or more DASH segments comprise reconstructed DASH segments, and the reconstructed DASH segments are stored in the segments buffer immediately after reconstruction.

7. The method of claim 6, wherein the one or more reconstructed DASH segments comprise multiple representations.

8. The method of claim 7, wherein the multiple representations each comprising one or more of different data rates, and different levels of video quality.

9. The method of claim 7, wherein if a requested DASH segment for a particular representation having a desired level of video quality is not found in the segments buffer, modifying the URL and searching for another representation of the requested DASH segment having a next lower level of video quality.

10. The method of claim 2, wherein the URL information is used as an index for searching the segments buffer for the one or more particular DASH segments.

11. The method of claim 1, wherein the client device comprises one of a smart television device, and a mobile computing device.

12. A client device for content delivery using dynamic adaptive hypertext transport protocol (HTTP) streaming (DASH) without using HTTP, comprising:

a segments buffer; and

a DASH processing component that receives a media presentation description (MPD) file and one or more DASH segments, filters the one or more DASH segments using information from the MPD file, stores the filtered one or more DASH segments in the segments buffer and requests one or more particular DASH segments from the segments buffer based on the information for presenting content.

13. The client device of claim 12, wherein the information comprises associated uniform resource locator (URL) information, and the one or more DASH segments and the associated URL information are stored together in the segments buffer.

14. The client device of claim 13, wherein the client device tunes to a service for receiving the one or more DASH segments over multimedia multiplexing transport protocol (MMTP) without using HTTP.

15. The client device of claim 14, wherein the client device comprises the segments buffer without an HTTP cache.

16. The client device of claim 12, wherein the one or more DASH segments comprise reconstructed DASH segments, and the reconstructed DASH segments are stored in the segments buffer by the DASH client processing component immediately after reconstruction.

17. The client device of claim 16, wherein the one or more reconstructed DASH segments comprise multiple representations each comprising one or more of different data rates, and different levels of video quality.

18. The client device of claim 17, wherein if a requested DASH segment for a particular representation having a desired level of video quality is not found in the segments buffer, DASH client processing component modifies the URL and searches for another representation of the requested DASH segment having a next lower level of video quality.

19. The client device of claim 13, wherein the URL information is used as an index for searching the segments buffer for the one or more particular DASH segments by the DASH client processing component.

20. The client device of claim 12, wherein the client device comprises one of a smart television device, and a mobile computing device.

21. A non-transitory computer-readable medium having instructions which when executed on a computer perform a method for content delivery using dynamic adaptive hypertext transport protocol (HTTP) streaming (DASH) without using HTTP, comprising:

receiving a media presentation description (MPD) file and one or more DASH segments by a client device;

using information in the MPD file to filter the one or more DASH segments;

storing the filtered one or more DASH segments in a segments buffer; and

requesting one or more particular DASH segments from the segments buffer by the client device based on the information.

22. The medium of claim 21, wherein the information comprises associated uniform resource locator (URL) information, wherein the one or more DASH segments and the associated URL information are stored together in the segments buffer.

23. The medium of claim 22, further comprising:

tuning to a service by the client device for receiving the one or more DASH segments over multimedia multiplexing transport protocol (MMTP) without using HTTP.

24. The medium of claim 23, wherein the client device comprises the segments buffer without an HTTP cache.

25. The medium of claim 21, wherein the one or more DASH segments comprise reconstructed DASH segments, and the reconstructed DASH segments are stored in the segments buffer immediately after reconstruction.

26. The medium of claim 25, wherein the one or more reconstructed DASH segments comprise multiple representations.

27. The medium of claim 26, wherein the multiple representations each comprising one or more of different data rates, and different levels of video quality.

28. The medium of claim 27, wherein if a requested DASH segment for a particular representation having a desired level of video quality is not found in the segments buffer, modifying the URL and searching for another representation of the requested DASH segment having a next lower level of video quality.

29. The medium of claim 22, wherein the URL information is used as an index for searching the segments buffer for the one or more particular DASH segments.

30. The medium of claim 21, wherein the client device comprises one of a smart television device, and a mobile computing device.