Method and Device for Displaying the Content of a Region of Interest within a Video Image

• US 20070200953A1
• Filed: 02/28/2006
• Published: 08/30/2007
• Est. Priority Date: 02/28/2006
• Status: Abandoned Application

• Current Assignee: Realtek Semiconductor Corp.
• Original Assignee: Realtek Semiconductor Corp.
• Inventors: Liu, Yu-Ying, Lee, Ying-Jui, Chang, Chia-Pei, Lin, Yung-Hsiang
• Application Number:
  US11/307,955
• Publication Number:
  US 20070200953A1
• Time in Patent Office: Days
• US Class Current: 348/561
• CPC Class Codes: H04N 21/4728 for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen

Abstract

A method and device for displaying content of a region of interest within a video image is disclosed. The method includes: receiving a video signal from a video source; decoding the video signal to generate a video data corresponding to the video image; receiving at least a user command to modify the region of interest; and displaying the content of the modified region of interest on a screen according to part of the video data corresponding to the modified region of interest.

Claims

1. A method for displaying content of a region of interest within a video image, the method comprising:

receiving a video signal from a video source;

decoding the video signal to generate a video data corresponding to the video image;

receiving at least a command signal to modify the region of interest; and

displaying the content of the modified region of interest on a screen according to part of the video data corresponding to the modified region of interest.

2. The method of claim 1, wherein modifying the region of interest further comprises:

setting a plurality of polygon coordinate points on an active display area of the screen to define the region of interest.

3. The method of claim 2, wherein displaying the content of the region of interest further comprising:

scaling the content of the region of interest.

4. The method of claim 3, wherein modifying the region of interest comprises:

panning the region of interest within the video image after the content of the region of interest is scaled.

5. The method of claim 2, wherein modifying the region of interest comprises:

panning the region of interest within the video image.

6. The method of claim 1, wherein the content of the region of interest fills an active display area of the screen.

7. The method of claim 6, wherein modifying the region of interest comprises:

scaling the region of interest within the video image.

8. The method of claim 7, wherein modifying the region of interest further comprises:

panning the region of interest within the video image.

9. The method of claim 6, wherein modifying the region of interest further comprises:

panning the region of interest within the video image.

10. The method of claim 6, further comprising:

displaying a thumbnail on the screen to indicate a location of the region of interest within the video image.

11. The method of claim 1, wherein the video image is a still image or a motion video image according to the source.

12. The method of claim 1, wherein the video image is a motion video image and the motion video image remains in motion during modifying the region of interest.

13. The method of claim 1, wherein the video signal complies with the digital TV specification.

14. A device for displaying content of a region of interest within a video image, the device comprising:

a video decoder, coupled to a video source, for receiving a video signal from the video source and decoding the video signal to generate a video data corresponding to the video image;

a frame buffer, coupled to the video decoder, for buffering the video data;

a driver unit for receiving at least a command signal to modify the region of interest; and

a display unit, coupled to the frame buffer and the driver unit, for displaying the content of the modified region of interest on a screen according to part of the video data corresponding to the modified region of interest.

15. The device of claim 14, wherein the driver unit receives a plurality of command signals indicating a plurality of polygon coordinate points on an active display area of the screen, and the driver unit modifies the region of interest according to the polygon coordinate points.

16. The device of claim 15, wherein the display unit further scales the content of the region of interest.

17. The device of claim 16, wherein the driver unit further pans the region of interest within the video image after the content of the region of interest is scaled.

18. The device of claim 15, wherein the driver unit further pans the region of interest within the video image.

19. The device of claim 14, wherein the content of the region of interest fills an active display area of the screen.

20. The device of claim 19, wherein the display unit further scales the region of interest within the video image.

21. The device of claim 20, wherein the display unit further pans the region of interest within the video image.

22. The device of claim 19, wherein the display unit further pans the region of interest within the video image.

23. The device of claim 19, wherein the display unit further displays a thumbnail on the screen to indicate a location of the region of interest within the video image.

24. The device of claim 14, wherein the video image is a still image or a motion video image according to the source.

25. The device of claim 14, wherein the video image is a motion video image and the motion video image remains in motion during modifying the region of interest.

26. The device of claim 14, wherein the video signal complies with the digital TV specification.

27. The device of claim 26, wherein the video decoder, the frame buffer, the display unit, the driver unit, and the screen are all disposed within a TV.

28. The device of claim 26, wherein the video decoder, the frame buffer, the display unit, and the driver unit are all disposed within a set-top box coupled to the screen of a TV.