Method of synchronizing still picture with moving picture stream

• US 20060008254A1
• Filed: 07/06/2005
• Published: 01/12/2006
• Est. Priority Date: 07/07/2004
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Kwang Deok
• Application Number:
  US11/176,618
• Publication Number:
  US 20060008254A1
• Time in Patent Office: Days
• US Class Current: 386/220
• CPC Class Codes: H04N 19/102 characterised by the element, parameter or selection affected or controlled by the adaptive coding
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/4302 Content synchronisation processes, e.g. decoder synchronisation
• CPC Class Codes: H04N 21/43074 of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/8153 comprising still images, e.g. texture, background image
• CPC Class Codes: H04N 21/8547 involving timestamps for synchronizing content
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8715 involving the mixing of the reproduced video signal with a non-recorded signal, e.g. a text signal

Abstract

A method of synchronizing a still picture with a moving picture stream is disclosed, which is suitable for supporting a multimedia service further using a still picture to provide separate video data as well as moving pictures and voice. The present invention includes the steps of generating a control data for synchronization of the still picture from a server, providing the control data to a client through a prescribed moving picture frame of the moving picture stream by the server, and synchronizing the still picture with the moving picture stream to display by the client.

Claims

1. In a system supporting a multimedia service, a method of synchronizing a still picture with a moving picture stream, comprising the steps of;

generating a control data for synchronization of the still picture from a server;

providing the control data to a client through a prescribed moving picture frame of the moving picture stream by the server; and

synchronizing the still picture with the moving picture stream to display by the client.

2. The method of claim 1, wherein the moving picture frame has a User_Data area where the control data is inserted.

3. The method of claim 1, wherein the control data is a frame identifier to identify a frame of the still picture from frames of other still pictures.

4. The method of claim 1, wherein the moving picture is an MPEG (Moving Picture Experts Group) series.

5. The method of claim 1, wherein the still picture is a JPEG (Joint Photographic Expert Group) series.

6. The method of claim 1, further comprising a step of previously providing a code to the client by the server, wherein the code is to indicate that the control data shall be provided.

7. The method of claim 6, wherein the server provides the code prior to the moving picture frame.

8. The method of claim 6, wherein the server provides the code via a prescribed frame followed by the moving picture frame.

9. The method of claim 1, further comprising the steps of:

allowing the client to previously receive a code indicating that the control data shall be provided; and

allowing the client to receive the moving picture frame containing the control data.

10. The method of claim 9, wherein if the client finds the code from the moving picture stream, the client reads the control data included in the moving picture frame indicated by the code.

11. The method of claim 10, wherein the control data is an identifier to identify a frame of the still picture from a plurality of still pictures previously stored in the client.

12. The method of claim 1, wherein the client previously stores the still picture.

13. The method of claim 1, wherein the server previously stores the still picture.

14. The method of claim 13, wherein the server generates the control data using a frame identifier of the stored still picture.

15. In a server providing a multimedia service to a client, a method of synchronizing a still picture with a moving picture stream, comprising the steps of:

inserting an identifier of the still picture frame to be synchronized with the moving picture stream in a prescribed moving picture frame of the moving picture stream; and

transmitting the prescribed moving picture frame including the identifier to the client.

16. The method of claim 15, wherein the moving picture frame has a USER_DATA field where the identifier is inserted.

17. The method of claim 15, wherein the moving picture is an MPEG (Moving Picture Experts Group) series.

18. The method of claim 15, wherein the still picture is a JPEG (Joint Photographic Expert Group) series.

19. The method of claim 15, further comprising a step of inserting a code prior to the identifier wherein the code is to indicate that the identifier is included in the moving picture frame.

20. The method of claim 19, wherein the code is a USER_DATA_START code (UDSC).

21. The method of claim 19, wherein the code is inserted in a head of the moving picture frame.

22. The method of claim 19, wherein the code is inserted in a prescribed frame followed by the moving picture frame.

23. In a client provided with a multimedia service by a server, a method of synchronizing a still picture with a moving picture stream, comprising the steps of:

extracting a moving picture frame including a identifier of the still picture from the moving picture stream;

reading the identifier from the moving picture frame; and

synchronizing the still picture with the moving picture stream to display using the identifier.

24. The method of claim 23, wherein the moving picture is an MPEG (Moving Picture Experts Group) series.

25. The method of claim 23, wherein the still picture is a JPEG (Joint Photographic Expert Group) series.

26. The method of claim 23, further comprising a step of receiving a code indicating that the moving picture frame including the identifier shall be received.

27. The method of claim 23, wherein the identifier is read from a USER_DATA field of the moving picture frame.

28. In a system including a server supporting a multimedia service and a client, a method of synchronizing a picture frame with a picture stream, comprising the steps of:

allowing each of the server and the client to store the picture frame;

generating control data for synchronization of the picture frame from the server;

allowing the server to provide the control data to the client via a prescribed frame of the picture stream; and

allowing the client to display the stored picture frame at a synchronization timing point by the control data.

29. The method of claim 28, wherein the prescribed frame to provide the control data has a user data area in which the control data is inserted.

30. The method of claim 28, wherein the control data includes a frame identifier to identify the picture frame.

31. The method of claim 28, wherein the synchronization timing point is a timing point corresponding to the prescribed frame to provide the control data.

32. The method of claim 28, further comprising a step of allowing the server to previously provide the client with a code indicating the prescribed frame to provide the control data.