SYSTEM AND METHOD FOR MANAGING THE PRESENTATION OF VIDEO

• US 20090282444A1
• Filed: 07/22/2009
• Published: 11/12/2009
• Est. Priority Date: 12/04/2001
• Status: Abandoned Application

• Current Assignee: VIXS Systems Incorporated (Pixelworks Incorporated)
• Original Assignee: VIXS Systems Incorporated (Pixelworks Incorporated)
• Inventors: Jin, Song, Liu, Haibo, Hua, Hai, Dong, SuiWu, Laksono, Indra, Zhao, Xu Gang
• Application Number:
  US12/507,622
• Publication Number:
  US 20090282444A1
• Time in Patent Office: Days
• US Class Current: 725/89
• CPC Class Codes: H04N 21/2387 Stream processing in response to a playback request from an end-user, e.g. for trick-play
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 7/17336 Handling of requests in head-ends

Abstract

A system and a method to manage the presentation of video to one or more display clients are disclosed herein. The video can be presented in a fast forward presentation mode, a fast reverse presentation mode, and a reverse presentation mode. Additionally, the presentation of the video can be paused and then resumed, or shifted by a certain time or number of frames. In at least one embodiment, a frame index is utilized when changing the presentation rate or the direction of the presentation. The frame index can be used to identify and/or locate certain frames of the video. Once located and/or identified, the order of the frames can be manipulated and/or a subset of the frames can be selected to generate different presentation modes of the video.

Claims

1. In a system comprising a video server and a display client connected via a network, a method comprising:

providing video data from the video server to the display client, the video data including a plurality of frames having a presentation sequence;

receiving, at the video server, a pause request from the display client while providing the video data to the display client; and

determining, at the video server in response to receiving the pause request, a last frame of the plurality of frames provided to the display client at a time corresponding to generation of the pause request at the display client.

2. The method of claim 1, further comprising:

receiving, at the video server, a resume request from the display client following receipt of the pause request; and

providing, from the video server to the display client in response to receiving the resume request, a next frame of the plurality of frames following the last frame in the presentation sequence.

3. The method of claim 2, wherein the next frame is immediately subsequent to the last frame in the presentation sequence.

4. The method of claim 2, wherein:

the pause request comprises a jump request indicating a shift in a presentation of the video data by a select number of frames; and

the next frame is subsequent to the last frame in the presentation sequence by the select number of frames.

5. The method of claim 2, wherein at least one of the pause request or the resume request comprises at least one selected from a group consisting of:

an indicator identifying the last frame provided to the display client; and

a time value representative of the last frame provided to the display client.

6. The method of claim 2, further comprising:

generating, at the video server, a frame index for the video data, the frame index comprising a plurality of frame index entries corresponding to the plurality of frames of the video data; and

wherein providing the next frame of the plurality of frames from the video server to the display client comprises identifying the next frame within the plurality of frames based on the frame index.

7. The method of claim 2, wherein providing the next frame from the video server to the display client comprises downscaling the next frame at the video server based on a bandwidth limitation of the network.

8. The method of claim 1, further comprising:

determining, at the video server, a buffer capacity of the display client based on a corresponding indicator of the pause request; and

providing, from the video server to the display client in response to receiving the pause request, a set of one or more frames following the last frame in the presentation sequence, wherein a number of frames included in the set of one or more frames is based on the buffer capacity.

9. The method of claim 8, further comprising:

generating, at the video server, a frame index for the video data, the frame index comprising a plurality of frame index entries corresponding to the plurality of frames of the video data; and

wherein providing the set of one or more frames from the video server to the display client comprises identifying the set of one or more frames within the plurality of frames based on the frame index.

10. The method of claim 8, wherein providing the set of one or more frames from the video server to the display client comprises downscaling at least one frame of the set of one or more frames at the video server based on a bandwidth limitation of the network.

11. A system comprising:

a video server comprising;

a presentation control to;

provide video data to a display client via a network, the video data including a plurality of frames having a presentation sequence;

receive a pause request from the display client via the network while providing the video data to the display client; and

determine, in response to receiving the pause request, a last frame of the plurality of frames provided to the display client at a time corresponding to generation of the pause request at the display client.

12. The system of claim 11, wherein the presentation control of the video server further is to:

receive a resume request from the display client following receipt of the pause request; and

in response to receiving the resume request, provide to the display client via the network a next frame of the plurality of frames following the last frame in the presentation sequence.

13. The system of claim 12, wherein the next frame is immediately subsequent to the last frame in the presentation sequence.

14. The system of claim 12, wherein:

the pause request comprises a jump request indicating a shift in a presentation of the video data by a select number of frames; and

the next frame is subsequent to the last frame in the presentation sequence by the select number of frames.

15. The system of claim 12, wherein the video server further comprises:

a recorder module to generate a frame index for the video data, the frame index comprising a plurality of frame index entries corresponding to the plurality of frames of the video data; and

wherein the presentation control identifies the next frame within the plurality of frames based on the frame index.

16. The system of claim 12, wherein the video server further comprises:

a transcoder to downscale the next frame based on a bandwidth limitation of the network.

17. The system of claim 11, wherein:

the video server is to determine a buffer capacity of the display client based on a corresponding indicator of the pause request; and

the presentation control is to provide, in response to receiving the pause request, a set of one or more frames following the last frame in the presentation sequence to the display client via the network, wherein a number of frames included in the set of one or more frames is based on the buffer capacity.

18. The system of claim 17, wherein the video server further comprises:

a recording module to generate a frame index for the video data, the frame index comprising a plurality of frame index entries corresponding to the plurality of frames of the video data; and

wherein the presentation control is to identify the set of one or more frames within the plurality of frames based on the frame index.

19. The system of claim 17, wherein the video server further comprises:

a transcoder to downscale at least one frame of the set of one or more frames based on a bandwidth limitation of the network.

20. The system of claim 17, further comprising:

the display client, wherein the display client is to generate the pause request and provide the pause request to the video server responsive to a remote control command from a user.

21. In a system comprising a video server and a display client connected via a network, a method comprising:

generating, at the video server, a frame index for video data, wherein the frame index comprises a plurality of frame index entries corresponding to a plurality of frames of the video data and wherein the plurality of frames has a presentation sequence;

providing the video data from the video server to the display client;

receiving, at the video server, a pause request from the display client while providing the video data to the display client;

determining, at the video server in response to receiving the pause request, a last frame of the plurality of frames provided to the display client at a time corresponding to generation of the pause request at the display client;

determining, at the video server, a buffer capacity of a buffer of the display client based on a corresponding indicator of the pause request;

identifying a set of one or more frames following the last frame in the presentation sequence based on the buffer capacity and the frame index, the set of one or more frames comprising a number of frames sufficient to fill the buffer of the display client;

providing the set of one or more frames to the display client in response to the pause request;

receiving, at the video server, a resume request from the display client subsequent to providing the set of one or more frames; and

identifying, at the video server, a next frame following the set of one or more frames in the presentation sequence in response and providing the next frame from the video server to the display client in response to receiving the resume request at the video server.