Multi-point video conferencing scheme

• US 20030149724A1
• Filed: 02/01/2002
• Published: 08/07/2003
• Est. Priority Date: 02/01/2002
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Chang, Luke L.
• Granted Patent: US 6,922,718 B2
• Time in Patent Office: Days
• US Class Current: 709/204
• CPC Class Codes: H04L 12/1822 Conducting the conference, e.g. admission, detection, selection or grouping of participants, correlating users to one or more conference sessions, prioritising transmission
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13175 Graphical user interface [GUI], WWW interface, visual indication
• CPC Class Codes: H04Q 2213/13337 Picturephone, videotelephony
• CPC Class Codes: H04Q 2213/1336 Synchronisation
• CPC Class Codes: H04Q 2213/13389 LAN, internet

Abstract

A multi-point video conferencing system and method for managing display of images of multiple participating locations and bandwidth allocated for a multi-point video conference. The multi-point video conferencing system detects an audio signal associated with an image not currently displayed to each participating location in the multi-point video conference. When the number of active display windows is less than the maximum number of active display windows, a first active display window is activated and the image displayed in the first active display window. When the number of the active display windows is not less than the maximum number, a second active display window of the active display windows is inactivated, a third active display window is activated, and the image is displayed in the third active display window.

The multi-point video conferencing system can include a video display decision-making module, a multi-point control unit, and an audio presence detecting module.

Claims

1. A method comprising:

detecting an audio signal corresponding to a first participating location of a plurality of participating locations in a multi-point video conference, wherein

the first participating location has no corresponding active display window, and

the first participating location corresponds to an image;

when a number of active display windows is less than a maximum number of the active display windows,

activating a first active display window, and

displaying the image in the first active display window to each participating location; and

when the number of active display windows is not less than the maximum number,

inactivating a second active display window,

activating a third active display window, and

displaying the image in the third active display window to each participating location.

2. The method of claim1further comprising:

broadcasting the audio signal to each participating location.

3. The method of claim 1 wherein

the activating the first active display window comprises allocating first bandwidth for the first active display window;

and

the activating the third active display window comprises using second bandwidth allocated for the second active display window.

4. The method of claim 1 wherein

the second active display window occupies a first position among the active display windows;

and

the third active display window occupies a second position among the active display windows.

5. The method of claim 1 wherein

each active display window of the active display windows is visible substantially simultaneously at each participating location.

6. The method of claim 1 further comprising:

selecting the second active display window according to a length of time that the second active display window has been displayed.

7. The method of claim 1 further comprising:

selecting the second active display window according to a length of time that a second audio signal corresponding to the second active display window has been silent.

8. The method of claim 1 further comprising:

selecting the second active display window from a subset of the active display windows, wherein

the subset excludes a host active display window of the active display windows, the host active display window displaying a host participating location of the participating locations;

the subset excludes a priority active display window of the active display windows, the priority active display window displaying a priority participating location of the participating locations; and

the selecting precedes the inactivating.

9. The method of claim 1 further comprising:

selecting the second active display window from a subset of the active display windows, wherein

the selecting precedes the inactivating.

10. The method of claim 1 further comprising:

selecting the second active display window from a subset of the active display windows, wherein

the subset excludes a host display window of the active display windows, the host display window displaying a host participating location of the participating locations; and

the selecting precedes the inactivating.

11. The method of claim 1 further comprising:

selecting the second active display window from a subset of the active display windows, wherein

the subset excludes a priority display window of the active display windows, the priority display window displaying a priority participating location of the participating locations; and

the selecting precedes the inactivating.

12. The method of claim 1 further comprising:

displaying an existing image in an existing active display window of the active display windows substantially simultaneously with the displaying the image in one of the first active display window and the third active display window.

13. The method of claim 1 further comprising:

determining the maximum number of the active display windows from a limited bandwidth available for the multi-point video conference.

14. A method comprising:

detecting a change in audio status corresponding to a first participating location of a plurality of participating locations in a multi-point video conference;

when the change in audio status is from silent to audible, and

when a number of active display windows is less than a maximum number of the active display windows,

activating a first active display window;

starting a first display timer corresponding to the first active display window; and

displaying the image in the first active display window to each participating location; and

when the change in audio status is from silent to audible, and

when the number of active display windows is not less than the maximum number, inactivating a second active display window;

stopping a second display timer corresponding to the second active display window;

activating a third active display window;

starting a third display timer corresponding to the third active display window; and

displaying the image in the third active display window to each participating location; and

when the change in audio status is from audible to silent,

starting a first silence timer corresponding to the first participating location.

15. The method of claim 14 further comprising:

broadcasting the audio signal to each participating location.

16. The method of claim 14 wherein

the activating the first active display window comprises allocating first bandwidth for the first active display window;

and

the activating the third active display window comprises using second bandwidth allocated for the second active display window.

17. The method of claim 14 wherein

the inactivating the second active display window is performed according to one of a group consisting of the following:

a second silence timer indicating a first length of time that a second participating location corresponding to the second active display window has been silent, and

a second display timer indicating a second length of time that the second active display window has been displayed.

18. The method of claim 14 further comprising:

selecting the second active display window when the first length of time corresponds to a highest silence timer value of a plurality of silence timer values.

19. The method of claim 14 further comprising:

selecting the second active display window when the second length of time corresponds to a highest display timer value of a plurality of display timer values.

20. A method comprising:

detecting a change in audio status corresponding to a first participating location of a plurality of participating locations in a multi-point video conference;

when the change in audio status is from silent to audible, and

when a number of active display windows is less than a maximum number of the active display windows,

activating a first active display window,

starting a first display timer corresponding to the first active display window, and

displaying the image in the first active display window to each participating location; and

when a number of active display windows is not less than a maximum number of active display windows,

inactivating a second active display window according to one of a group consisting of the following;

a second silence timer indicating a first length of time that the second active display window has been silent, and

a second display timer indicating a second length of time that the second active display window has been displayed;

activating a third active display window;

starting a third display timer corresponding to the third active display window; and

displaying the image in the third active display window to each participating location; and

when the change in audio status is from audible to silent, starting a first silence timer corresponding to the first participating location.

21. The method of claim 20 further comprising:

broadcasting the audio signal to each participating location.

22. The method of claim 20 wherein

the activating the first active display window comprises allocating first bandwidth for the first active display window;

and

the activating the third active display window comprises using second bandwidth allocated for the second active display window.

23. The method of claim 20 further comprising:

selecting the second active display window when the first length of time corresponds to a highest silence timer value of a plurality of silence timer values.

24. The method of claim 20 further comprising:

selecting the second active display window when the second length of time corresponds to a highest display timer value of a plurality of display timer values.

25. A multi-point video conferencing system comprising:

a video display decision-making module to determine a display window for displaying an image to a set of participating locations in a multi-point video conference; and

a multi-point control unit configured to provide communication between the video display decision-making module and a plurality of display devices, wherein

each display device of the display devices corresponds to a respective participating location of the set of participating locations.

26. The multi-point video conferencing system of claim 25 wherein

the video display decision-making module is configured to perform the following:

detect an audio signal corresponding to a first participating location of a plurality of participating locations in a multi-point video conference, wherein

the first participating location has no corresponding active display window, and

the first participating location corresponds to an image;

when a number of active display windows is less than a maximum number of the active display windows,

activate a first active display window, and

display the image in the first active display window to each participating location; and

when the number of active display windows is not less than the maximum number,

inactivate a second active display window,

activate a third active display window, and

display the image in the third active display window to each participating location.

27. The multi-point video conferencing system of claim 25 further comprising:

an audio presence detecting module; and

wherein

the multi-point control unit is further configured to provide communication between the audio presence detecting module and a plurality of audio signal detecting devices, wherein

each audio signal detecting device is associated with a corresponding participating location of the participating locations.

28. A multi-point video conferencing system comprising:

detecting means for detecting an audio signal corresponding to a first participating location of a plurality of participating locations in a multi-point video conference, wherein

the first participating location has no corresponding active display window, and

the first participating location corresponds to an image;

first displaying means for, when a number of at least one active display window is less than a maximum number of the at least one active display window,

activating a first active display window, and

displaying the image in the first active display window;

second displaying means for, when the number of the at least one active display window is not less than the maximum number,

inactivating a second active display window;

activating a third active display window; and

displaying the image in the third active display window.

29. The multi-point video conferencing system of claim 28 further comprising:

broadcasting means for broadcasting the audio signal to each participating location.

30. The multi-point video conferencing system of claim 28 wherein

the first displaying means further comprise bandwidth allocating means for allocating first bandwidth for the first active display window;

and

the second displaying means further comprise bandwidth using means for using second bandwidth allocated for the second active display window.

31. The multi-point video conferencing system of claim 28 wherein

each active display window of the active display windows is visible substantially simultaneously at each participating location of the participating locations.

32. The multi-point video conferencing system of claim 28 further comprising:

selecting means for selecting the second active display window according to a length of time that the second active display window has been displayed.

33. The multi-point video conferencing system of claim 28 further comprising:

selecting means for selecting the second active display window according to a length of time that an audio signal corresponding to the second active display window has been silent.

34. The multi-point video conferencing system of claim 28 further comprising:

selecting means for selecting the second active display window from a subset of the active display windows, wherein

the subset excludes a host active display window of the active display windows, the host active display window displaying a host participating location of the participating locations;

the subset excludes a priority active display window of the active display windows, the priority active display window displaying a priority participating location of the participating locations; and

the selecting precedes the inactivating.

35. An information handling system comprising:

a processor; and

a memory comprising instructions executable by the processor, wherin

the information handling system is configured to communicate with a plurality of audio signal detecting devices, a corresponding audio signal detecting device for each participating location of a plurality of participating locations;

the information handling system is further configured to communicate with a plurality of display devices, a respective display device for each participating location of a set of the participating locations; and

the instructions comprise;

detecting instructions to detect an audio signal corresponding to a first participating location of the participating locations, wherein

the detecting is performed by a first audio signal detecting device of the audio signal detecting devices,

the first participating location has no corresponding active display window, and

the first participating location corresponds to an image;

first displaying instructions to, when a number of active display windows is less than a maximum number of the active display windows,

activate a first active display window, and

display the image in the first active display window on each display device of the display devices; and

second displaying instructions to, when the number of the active display windows is not less than the maximum number,

inactivate a second active display window;

activate a third active display window; and

display the image in the third active display window on each display device of the display devices.

36. The information handling system of claim 35 wherein

the first displaying instructions further comprise bandwidth allocating instructions to allocate first bandwidth for the first active display window;

and

the second displaying instructions further comprise bandwidth using instructions to use second bandwidth allocated for the second active display window.

37. The information handling system of claim 35 wherein the instructions further comprise:

broadcasting instructions to broadcast the audio signal to each participating location.

38. The information handling system of claim 35 wherein

the first displaying instructions and the second displaying instructions are configured so that each active display window of the active display windows is visible substantially simultaneously on each display device of the display devices at each participating location of the participating locations.

39. The information handling system of claim 35 wherein the instructions further comprise:

selecting instructions to select the second active display window according to a length of time that the second active display window has been displayed.

40. The information handling system of claim 35 wherein the instructions further comprise:

selecting instructions to select the second active display window according to a length of time that a second audio signal corresponding to the second active display window has been silent.

41. The information handling system of claim 35 wherein the instructions further comprise:

selecting instructions to select the second active display window from a subset of the active display windows, wherein

the subset excludes a host active display window of the active display windows, the host active display window displaying a host participating location of the participating locations;

the subset excludes a priority active display window of the at least one active display window, the priority active display window displaying a priority participating location of the participating locations; and

the selecting precedes the inactivating.

42. A computer program product comprising:

detecting instructions to detect an audio signal corresponding to a first participating location of a plurality of participating locations in a multi-point video conference, wherein

the first participating location has no corresponding active display window, and

the first participating location corresponds to an image;

first displaying instructions to, when a number of active display windows is less than a maximum number of the active display windows,

activate a first active display window, and

display the image in the first active display window; and

second displaying instructions to, when the number of the active display windows is not less than the maximum number,

inactivate a second active display window;

activate a third active display window; and

display the image in the third active display window.

43. The computer program product of claim 42 wherein the instructions further comprise:

broadcasting instructions to broadcast the audio signal to each participating location.

44. The computer program product of claim 42 wherein

the first displaying instructions further comprise bandwidth allocating instructions to allocate first bandwidth for the first active display window;

and

the second displaying instructions further comprise bandwidth using instructions to use second bandwidth allocated for the second active display window.

45. The computer program product of claim 42 wherein

the first displaying instructions and the second displaying instructions are configured so that each active display window of the active display windows is visible substantially simultaneously at each participating location.

46. The computer program product of claim 42 further comprising:

selecting instructions to select the second active display window according to a length of time that the second active display window has been displayed.

47. The computer program product of claim 42 further comprising:

selecting instructions to select the second active display window according to a length of time that a second audio signal corresponding to the second active display window has been silent.

48. The computer program product of claim 42 further comprising:

selecting instructions to select the second active display window from a subset of the active display windows, wherein

the subset excludes a host active display window of the active display windows, the host active display window displaying a host participating location of the participating locations;

the subset excludes a priority active display window of the active display windows, the priority active display window displaying a priority participating location of the participating locations; and

the selecting precedes the inactivating.