MULTI-SCREEN VIDEO PLAYBACK SYSTEM AND RELATED COMPUTER PROGRAM PRODUCT FOR DYNAMICALLY GENERATING SCALED VIDEO

• US 20130266286A1
• Filed: 04/08/2013
• Published: 10/10/2013
• Est. Priority Date: 04/06/2012
• Status: Active Grant

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: YU, Siu-Leong, WEI, Shih-Chun, MA, Chen
• Granted Patent: US 8,965,172 B2
• Time in Patent Office: Days
• US Class Current: 386/230
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 9/8227 the additional signal being at least another television signal
• CPC Class Codes: H04N 9/87 Regeneration of colour television signals H04N9/80 takes precedence

Abstract

A multi-screen video playback system includes: a video playback device having a main display, a portable communication device having a screen, and a multi-screen display controlling server. The multi-screen display controlling server transmits a target video to the video playback device via a network so that the video playback device utilizes the main display to display the target video. While the main display displays the target video, if the multi-screen display controlling server received a selection message corresponding to a position of a partial region of the main display, the multi-screen display controlling server dynamically generates a scaled video corresponding to images displayed on the partial region and transmits the scaled video to the portable communication device via a network so that the portable communication device simultaneously displays the scaled video on the screen.

Claims

1. A multi-screen video playback system for dynamically generating a scaled video, comprising:

a video playback device comprising a main display;

a first portable communication device comprising a first screen; and

a multi-screen display controlling server, configured to operably establish a device group relationship between the video playback device and the first portable communication device, and to transmit a target video to the video playback device via a network so that the video playback device displays the target video on the main display;

wherein while the main display displays the target video, if the multi-screen display controlling server received a first selection message corresponding to a position of a first partial region of the main display, the multi-screen display controlling server dynamically generates a first scaled video corresponding to images displayed on the first partial region and transmits the first scaled video to the first portable communication device via a network, so that the first portable communication device simultaneously displays the first scaled video on the first screen.

2. The multi-screen video playback system of claim 1, wherein the first selection message comprises a boundary information of the first partial region.

3. The multi-screen video playback system of claim 1, wherein the first selection message comprises a location information of a center point of the first partial region.

4. The multi-screen video playback system of claim 1, wherein a total area of the first partial region is less than a total area of the first screen.

5. The multi-screen video playback system of claim 1, wherein when a user utilizes a remote control of the video playback device to select the first partial region of the main display, the video playback device generates and transmits the first selection message to the multi-screen display controlling server.

6. The multi-screen video playback system of claim 1, wherein the first portable communication device utilizes the first screen to display the first scaled video and a user control interface, and when a user utilizes the user control interface to select the first partial region of the main display, the first portable communication device generates and transmits a first configuration message corresponding to the position of the first partial region to the video playback device;

wherein the video playback device generates the first selection message according to the first configuration message and transmits the first selection message to the multi-screen display controlling server.

7. The multi-screen video playback system of claim 1, wherein the first scaled video is a zoomed in version of images displayed on the first partial region, or a zoomed out version of images displayed on the first partial region.

8. The multi-screen video playback system of claim 7, wherein the multi-screen display controlling server performs an interpolation operation on images corresponding to the first partial region to generate the zoomed in version of the images displayed on the first partial region.

9. The multi-screen video playback system of claim 7, wherein the multi-screen display controlling server extracts image contents corresponding to the first partial region from a higher resolution version of the target video to form the zoomed in version of the images displayed on the first partial region.

10. The multi-screen video playback system of claim 1, further comprising:

a second portable communication device comprising a second screen;

wherein the multi-screen display controlling server further establishes a device group relationship between the video playback device and the second portable communication device; and

while the main display displays the target video, if the multi-screen display controlling server received a second selection message corresponding to a position of a second partial region of the main display, the multi-screen display controlling server dynamically generates a second scaled video corresponding to images displayed on the second partial region and transmits content of the second scaled video to the second portable communication device via a network, so that the second portable communication device simultaneously displays the second scaled video on the second screen.

11. A computer program product, stored in a non-transitory storage device of a multi-screen display controlling server for dynamically generating a scaled video, when executed by a control circuit of the multi-screen display controlling server, enabling the multi-screen display controlling server to perform a multi-screen display controlling operation, the computer program product comprising:

a group setting module, configured to operably establish a device group relationship between a video playback device and a first portable communication device, wherein the video playback device comprises a main display, and the first portable communication device comprises a first screen;

a target video providing module, configured to operably transmit a target video to the video playback device via a network, so that the video playback device displays the target video on the main display;

a receiving module, configured to operably receive a first selection message corresponding to a position of a first partial region of the main display while the video playback device displays the target video on the main display; and

a scaled video providing module, configured to dynamically generate a first scaled video corresponding to images displayed on the first partial region and transmits the first scaled video to the first portable communication device via a network, so that the first portable communication device simultaneously displays the first scaled video on the first screen while the main display displays the target video.

12. The computer program product of claim 11, wherein the first selection message comprises a boundary information of the first partial region.

13. The computer program product of claim 11, wherein the first selection message comprises a location information of a center point of the first partial region.

14. The computer program product of claim 11, wherein a total area of the first partial region is less than a total area of the first screen.

15. The computer program product of claim 11, wherein the receiving module receives the first selection message from the video playback device.

16. The computer program product of claim 11, wherein the first scaled video is a zoomed in version of images displayed on the first partial region, or a zoomed out version of images displayed on the first partial region.

17. The computer program product of claim 16, wherein the scaled video providing module performs an interpolation operation on images corresponding to the first partial region to generate the zoomed in version of the images displayed on the first partial region.

18. The computer program product of claim 16, wherein the scaled video providing module extracts image contents corresponding to the first partial region from a higher resolution version of the target video to form the zoomed in version of the images displayed on the first partial region.

19. The computer program product of claim 11, wherein the group setting module further establishes a device group relationship between the video playback device and a second portable communication device comprising a second screen;

wherein while the main display displays the target video, if the receiving module received a second selection message corresponding to a position of a second partial region of the main display, the scaled video providing module dynamically generates a second scaled video corresponding to images displayed on the second partial region and transmits the second scaled video to the second portable communication device via a network, so that the second portable communication device simultaneously displays the second scaled video on the second screen.