MULTIMEDIA DATA PROCESSING APPARATUS AND METHOD OF TERMINAL

• US 20130246582A1
• Filed: 03/11/2013
• Published: 09/19/2013
• Est. Priority Date: 03/13/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Heungki, HONG, Seungseok, KIM, Gilyoon, JEONG, Seunghwan
• Granted Patent: US 10,404,772 B2
• Time in Patent Office: Days
• US Class Current: 709/219
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04N 21/23439 for generating different versions
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/4621 Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/6373 for rate control , e.g. request to the server to modify its transmission rate flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/6375 for requesting retransmission , e.g. of data packets lost or corrupted during transmission from serverARQ protocols H04L1/18; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection

Abstract

The data download method of a terminal device processing data downloaded in progressive download mode is provided. The method includes measuring bandwidth of the data downloaded, requesting, when the measured bandwidth is narrower than a reference bandwidth, for transmitting data with narrow bandwidth, registering a duration in which the data is downloaded with narrow bandwidth as a backup duration, requesting, when the measured bandwidth is equal to or greater than the reference bandwidth, for retransmission of backup data corresponding to the backup duration through a backup channel, and storing the data of the backup duration.

Claims

1. A data download method of a terminal device processing data downloaded in progressive download mode, the method comprising:

measuring bandwidth of data downloaded;

requesting, when the measured bandwidth is narrower than a reference bandwidth, for transmitting data with narrow bandwidth;

registering a duration in which the data is downloaded with narrow bandwidth as a backup duration;

requesting, when the measured bandwidth is equal to or greater than the reference bandwidth, for retransmission of backup data corresponding to the backup duration through a backup channel; and

storing the data of the backup duration.

2. The method of claim 1, further comprising requesting, when the measured bandwidth is narrower than the reference bandwidth, for transmitting data configured with the corresponding bandwith.

3. The method of claim 2, wherein the requesting for retransmission comprises requesting, when the measured bandwidth is wider than the reference bandwidth and data neither download nor played is larger than a predetermined size, for retransmission of the backup data.

4. The method of claim 3, further comprising:

requesting, when the measured bandwidth is wider than the reference bandwidth, for transmission of the data with the reference bandwidth; and

storing the downloaded data.

5. The method of claim 4, wherein the data comprises motion picture data.

6. A multimedia data playback method of a terminal device, the method comprising:

configuring a reference bandwidth of progressive download playback;

measuring bandwidth of the multimedia data downloaded;

requesting, when the measured bandwidth is narrower than the reference bandwidth, for transmitting the multimedia data with the measured bandwidth;

registering a duration corresponding to the bandwidth narrower than the reference bandwidth as a backup duration;

re-requesting, when the bandwidth of the multimedia data is wider than the reference bandwidth, for multimedia data of the backup duration;

storing the downloaded multimedia data and the backup data;

storing, when the bandwidth of the multimedia data matches the reference bandwidth, the downloaded data; and

requesting for data transmission with the reference bandwidth.

7. The method of claim 6, wherein the multimedia data comprises at least two copies having different bandwidths and each copy includes unit data having a predetermined playback time.

8. The method of claim 7, wherein the configuring comprises:

selecting an index file of a selected multimedia data; and

selecting a reference bandwidth of the unit data to be played in the progressive download playback by parsing the index file.

9. The method of claim 8, wherein the registering comprises:

configuring bandwidth corresponding to the bandwidth of downloaded unit data; and

registering, when the bandwidth of the received data is narrower than the reference bandwidth, the duration of low bandwidth as the backup duration.

10. The method of claim 9, wherein the re-requesting comprises requesting for retransmission when a measured reception rate of the data is higher than the reference bandwidth and a number of unit data that are neither downloaded nor played is equal to or greater than a predetermined value.

11. The method of claim 10, wherein the storing of the downloaded multimedia and the backup data comprises:

configuring the reference bandwidth as a data reception bandwidth;

storing, when the downloaded data is backup data, the backup data;

deleting the backup data from a download table; and

configuring, when backup data exists, unit data for backup next in the download table.

12. The method of claim 11, further comprising downloading and storing, when the progressive download playback is terminated, the backup data which is not stored,

wherein the downloading and storing of the backup data comprises:

configuring, when the backup data to be stored exists, unit data for backup next in the download table;

requesting backup data transmission;

storing downloaded data; and

deleting the backup data from the download table.

13. The method of claim 10, wherein the data comprises Hypertext Transfer Protocol (HTTP) live streaming motion picture data, and the unit data comprises Transport Stream (TS).

14. The method of claim 13, wherein the data comprises motion picture data having one of H.TS, M.TS, and L.TS bandwidths.

15. The method of claim 10, wherein the data comprises Smooth streaming motion picture data, and the unit data comprises fragment.

16. The method of claim 15, wherein the data comprises motion picture data having one of VH.Frag, VM.Frag, and VL.Frag bandwidths.

17. A progressive download playback apparatus of a terminal, the apparatus comprising:

a communication unit for requesting a server for transmitting data and for downloading the data through a playback channel and backup data through a backup channel;

a storage unit including a download table and a content storage;

a control unit for measuring bandwidth of the data downloaded, for requesting, when the measured bandwidth is narrower than a reference bandwidth, for transmitting data with narrow bandwidth, for registering the a duration in which the data is downloaded with narrow bandwidth as a backup duration with the download table, for requesting, when the measured bandwidth is equal to or greater than the reference bandwidth, for retransmission of backup data corresponding to the backup duration, and for storing the downloaded data in the content storage; and

a display unit for displaying the downloaded data under control of the control unit.

18. The apparatus of claim 17, wherein the server stores at least two copies of the multimedia data that have different bandwidths, and each copy comprises unit data having a predetermined playback time.

19. The apparatus of claim 18, wherein the control unit configures, when a reception rate of measured data is less than the reference bandwidth, the bandwidth corresponding to the data reception rate to request for data transmission.

20. The apparatus of claim 19, wherein the control unit requests, when the reception rate of the measured data is higher than the reference bandwidth and a number of unit data downloaded but not played is greater than a predetermined value, for the retransmission of the backup data.

21. The apparatus of claim 20, wherein the control unit requests, when the reception rate of the measured data is greater than the reference bandwidth, for data transmission and stores the downloaded data in the content storage.

22. The apparatus of claim 21, wherein the data comprises Hypertext Transfer Protocol (HTTP) live streaming motion picture data, and the unit data comprises Transport Stream (TS).

23. The apparatus of claim 21, wherein the data comprises Smooth streaming motion picture data, and the unit data comprises fragment.

24. A multimedia data processing method of a terminal device, the method comprising:

measuring bandwidth of multimedia data which is being downloaded and played;

registering, when the measured bandwidth is narrower than a reference bandwidth, a duration during which the multimedia data with low bandwidth as a backup duration, the multimedia data being stored simultaneously;

storing, when the measured bandwidth matches the reference bandwidth, the received multimedia data;

requesting, when the measured bandwidth is equal to or greater than the reference bandwidth, for retransmission of backup data;

storing the downloaded multimedia data; and

storing the multimedia data received through a backup channel as corresponding backup duration data.

25. The method of claim 24, further comprising:

requesting, when the multimedia data playback completes but the download of the multimedia data for the backup duration does not complete, for retransmission of the multimedia data for the backup duration; and

downloading and storing the retransmitted multimedia data.