Method of restoring AV session and a control point for the same

• US 20070189733A1
• Filed: 01/23/2007
• Published: 08/16/2007
• Est. Priority Date: 01/31/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sang-hoon, Cho, Joon-ho, Yoon, Hyun-sik
• Granted Patent: US 8,782,717 B2
• Time in Patent Office: Days
• US Class Current: 386/263
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/2827 Reporting to a device within the home network; wherein the reception of the information reported automatically triggers the execution of a home appliance functionality
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An AV session restoration method and a control point for performing the same are provided. The method includes collecting AV session information, and restoring the AV session based on the collected AV session information when an error occurs in the AV session.

Claims

1. A method of restoring an AV session, the method comprising:

collecting AV session information; and

restoring the AV session based on the collected AV session information when an error occurs in the AV session.

2. The method of claim 1, wherein the AV session is a playing unit of content where the content streamed from a media server is normally played.

3. The method of claim 1, wherein the AV session information comprises at least one of identifiers of a media renderer and a media server, which composes the AV session, a uniform resource identifier (URI) of the content played in the AV session, and information on playing-environment information of the content.

4. The method of claim 3, wherein the playing-environment information comprises information on a content-playing position.

5. The method of claim 3, wherein the playing-environment information comprises at least one of (AV transport service (AVTS) state variables and rendering control service (RCS) state variables of UPnP environment.

6. The method of claim 1, wherein the collecting of AV session information comprises:

receiving a predetermined event message from a media renderer that composes the AV session; and

obtaining the AV session information from the event message.

7. The method of claim 1, wherein the collecting the AV session information comprises:

requesting the AV session information that composes the AV session from a media renderer; and

receiving the AV session information from the media renderer.

8. The method of claim 1, further comprising storing the AV session information in a media server that composes the AV session.

9. The method of claim 1, wherein the restoring comprises requesting a media renderer, which is checked through the AV session information, to play content in the AV session, which is identified through a URI of the content obtained by the AV session information, from a content-playing position obtained by the AV session information.

10. The method of claim 9, wherein the restoring further comprises requesting the media renderer to set a content-playing environment obtained by the AV session information.

11. The method of claim 1, further comprising determining that an error occurred in the AV session when at least one of an error-event message is received from at least one of a media renderer and a media server, and when a disconnection message is received from at least one of the media renderer and the media server in a state of at least one of the playing of content is not stopped and a request for stopping the playing of content is not input by a user.

12. A control point comprising:

an information-collecting module that collects AV session information; and

a restoration module that restores an AV session based on the collected AV session information when an error occurs in the AV session.

13. The control point of claim 12, wherein the AV session is a playing unit of content where the content streamed from a media server is normally played.

14. The control point of claim 12, wherein the AV session information comprises at least one of identifiers of a media renderer and a media server, which composes the AV session, a uniform resource identifier (URI) of the content played in the AV session, and a playing-environment information of the content.

15. The control point of claim 14, wherein the playing-environment information comprises information on a content-playing position.

16. The control point of claim 14, wherein the playing-environment information comprises at least one of AV transport service (AVTS) state variables and rendering control service (RCS) state variables of a UPnP environment.

17. The control point of claim 12, wherein the information-collecting module obtains the AV session information from an event message when a predetermined event message is received from a media renderer that composes the AV session.

18. The control point claim 12, wherein the information-collecting module receives the AV session information from a media renderer after requesting the AV session information from the media renderer that composes the AV session.

19. The control point of claim 12, wherein the information-collecting module requests storage of the AV session information in a media server that composes the AV session.

20. The control point of claim 12, wherein the restoration module requests a media renderer, which is checked through the AV session information, to play content in the AV session, which is identified through a URI of the content obtained by the AV session information, from a content-playing position obtained by the AV session information.

21. The control point of claim 20, wherein the restoration module requests the media renderer to set a content-playing environment obtained by the AV session information.

22. The control point of claim 12, further comprising a state checking module that determines that an error has occurred in the AV session when at least one of an error-event message is received from at least one of a media renderer and a media server, and when a disconnection message is received from at least one of the media renderer and the media server in a state of at least one of the playing of content is not stopped and a request for stopping the playing of content is not input by a user.