Method and apparatus displaying double screen

• US 20040263686A1
• Filed: 06/04/2004
• Published: 12/30/2004
• Est. Priority Date: 06/26/2003
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Kim, Jung-dae
• Granted Patent: US 7,292,284 B2
• Time in Patent Office: Days
• US Class Current: 348/556
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/440272 for performing aspect ratio conversion
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 7/012 Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229
• CPC Class Codes: H04N 7/0122 the input and the output signals having different aspect ratios

Abstract

An apparatus for displaying a double screen in a wide screen display device, the apparatus including a video interface to receive a first and a second video signal from a plurality of video signals according to a selection control signal, wherein each of the first and the second video signals have a general screen aspect ratio; a scaler to scale the first video signal to a resolution of a main screen and to scale the second video signal to a resolution of a subscreen with the general screen aspect ratio; and a control unit to output the selection control signal to display the double screen, control scaling of the first video signal and second video signal, and to simultaneously display the scaled first video signal on an area of a screen and the scaled second video signal on a portion of a remaining area of the screen.

Claims

1. An apparatus for displaying a double screen in a wide screen display device, the apparatus comprising:

a video interface to receive first and second video signals from a plurality of video signals input from outside the display device according to a selection control signal, wherein each of the first and the second video signals has a general screen aspect ratio;

a scaler to scale the first video signal to a resolution of a main screen with the general screen aspect ratio and to scale the second video signal to a resolution of a subscreen with the general screen aspect ratio, according to a scaling control signal; and

a control unit to output the selection control signal to display the double screen, control scaling of the first and second video signals according to a main screen selection signal of the first video signal and a subscreen selection signal of the second video signal, and to simultaneously display the scaled first video signal on a screen and the scaled second video signal on a portion of a remaining area of the screen.

2. The apparatus of claim 1, wherein the scaler scales the first video signal to a 1024×

768 resolution and scales the second video signal to a 256×

192 resolution, wherein the screen has a 1280×

768 resolution.

3. The apparatus of claim 1, wherein the control unit operates to display each of the first and second video signals at original aspect ratios without distortion.

4. The apparatus of claim 1, wherein the control unit converts the main screen into the subscreen and the subscreen into the main screen according to a screen conversion signal.

5. The apparatus of claim 4, wherein when the main screen is converted into the subscreen, the control unit outputs the scaling control signal to gradually reduce the main screen while maintaining the general screen aspect ratio of the main screen, and when the subscreen is converted into the main screen, the control unit outputs the scaling control signal to gradually enlarge the sub screen while maintaining the general screen aspect ratio of the subscreen.

6. The apparatus of claim 5, wherein a gradual screen conversion process is displayed on the display device.

7. A method of displaying a double screen, the method comprising:

receiving a first video signal and a second video signal among various video signals input from outside the display device according to a selection control signal, the first video signal and the second video signal having general screen aspect ratios;

scaling the first video signal to a resolution of a main screen with the general screen aspect ratio and scaling the second video signal to a resolution of a subscreen with the general screen aspect ratio, according to a scaling control signal; and

displaying the scaled first video signal on a screen and the scaled second video signal on a portion of a remaining area of the screen.

8. The method of claim 7, further comprising converting the main screen of the first video signal into the subscreen of the second video signal and the subscreen of the second video signal into the main screen of the first video signal.

9. The method of claim 8, wherein the converting the main screen into the subscreen comprises outputting the scaling control signal to gradually reduce the main screen while maintaining the general screen aspect ratio of the main screen, and the converting the subscreen into the main screen comprises outputting the scaling control signal to gradually enlarge the subscreen while maintaining the general screen aspect ratio of the subscreen.

10. The method of claim 7, further comprising scaling the first video signal to a 1024×

768 resolution and scaling the second video signal to a 256×

192 resolution.

11. An apparatus for displaying a double screen in a display device capable of displaying the double screen, the apparatus comprising:

a video-interface receiving first and second video signals from among a plurality of video signals according to a selection control signal;

a scaler scaling the first and second video signals to a resolution of a main screen and a resolution of a subscreen, respectively, according to a scaling control signal; and

a control unit controlling the scaling of the first and second video signals and simultaneously displaying each scaled video display on a respective area of a screen of the display device.

12. The apparatus of claim 11, wherein the control unit outputs the selection control signal to display the double screen.

13. The apparatus of claim 12, wherein the control unit simultaneously displays the first video signal on the screen and the second video signal on a portion of a remaining area of the screen.

14. The apparatus of claim 13, wherein the video interface comprises a D-SUB terminal, a digital video interactive terminal, an S-VIDEO terminal, a television tuner terminal, and a COMPOSITE terminal.

15. The apparatus of claim 14, wherein the D-SUB terminal and/or the DVI terminal transmit video signals directly to the scaler.

16. The apparatus of claim 15, further comprising a video decoder to decode video signal output from the video interface through one of the S-VIDEO terminal, the television tuner terminal, and the COMPOSITE terminal.

17. The apparatus of claim 16, further comprising a deinterlacer to deinterlace the decoded video signal and output a resulting signal to the scaler.

18. The apparatus of claim 17, wherein the scaler adjusts the resolution and outputs a processed video signal of the adjusted first and second video signals to the display device.

19. The apparatus of claim 18, further comprising an on screen display menu on the display unit for a user to select to display the double screen, wherein the on screen display menu includes a picture-in-picture screen, a picture-by-picture screen, and a picture-with-picture screen.

20. The apparatus of claim 19, wherein the first and the second video signals have a 4:

3 aspect ratio and the screen has a 16;

9 aspect ratio.

21. The apparatus of claim 20, wherein the scaler scales the first video signal to a 1024×

768 resolution and scales the second video signal to a 256×

192 resolution, wherein the screen has a 1280×

768 resolution.

22. The apparatus of claim 11, wherein the control unit converts the main screen into the subscreen and the subscreen into the main screen.

23. The apparatus of claim 22, wherein when the main screen is converted into the subscreen, the control unit outputs the scaling control signal to gradually reduce the main screen while maintaining the aspect ratio of the main screen, and when the subscreen is converted into the main screen, the control unit outputs the scaling control signal to gradually enlarge the sub screen while maintaining the aspect ratio of the subscreen.

24. A method of displaying a double screen in a display device capable of displaying the double screen, the method comprising:

receiving first and second video signals from among a plurality of video signals according to a selection control signal;

scaling the first and second video signals to a resolution of a main screen and a resolution of a subscreen, respectively, according to a scaling control signal; and

displaying the scaled first and second video signals simultaneously such that the subscreen is located in a separate area from the main screen on a screen of the display device.

25. The method of claim 24, further comprising displaying an on screen display menu to select from among a plurality of displays to display the double screen, wherein the displays to display the double screen comprise a picture-in-picture screen, a picture-by-picture screen, and a picture-with-picture screen.

26. The method of claim 25, wherein the receiving first and second video signals comprises receiving first and second video signals from one of a D-SUB terminal, DVI terminal, S-VIDEO terminal, television tuner, and COMPOSITE terminal output.

27. The method of claim 24, further comprising selecting one of the picture-in-picture screen or picture-by-picture screen and scaling and displaying the selected picture-in-picture screen or picture-by-picture screen on the display device.

28. The method of claim 24, further comprising selecting the picture-with-picture screen and scaling and displaying the selected picture-with-picture screen on the display device.

29. The method of claim 28, further comprising scaling each of the first and second video signals of the picture-with-picture screen to an aspect ratio of 4:

3, wherein the screen has an aspect ratio of 16;

9.

30. The method of claim 29, further comprising scaling the first video signal of the main screen to a 1024×

768 resolution and scaling the second video signal of the subscreen to a 256×

192 resolution.

31. The method of claim 30, further comprising displaying the main screen at either a left or a right edge of the screen and displaying the subscreen on a portion of a remaining area of the screen.

32. The method of claim 24, further comprising converting the main screen into the subscreen and the subscreen into the main screen;

wherein the main screen is converted into the subscreen by gradually reducing the main screen at a constant aspect ratio and the subscreen is converted into the main screen by gradually enlarging the subscreen at the constant aspect ratio.

33. The method of claim 32, further comprising performing the gradual reduction and the gradual enlargement process at the constant aspect ratio of 4:

3.

34. A method of displaying a double screen in a display device capable of displaying the double screen, the method comprising:

displaying a double screen according to a first user selection;

using a first input video signal to display a main screen and a second input video signal to display a subscreen;

displaying the main screen on the left or the right edge of a screen and displaying the subscreen on a portion of a remaining area of the screen remaining when a picture-with-picture display is selected; and

performing a screen conversion for the picture-with-picture display according to a second user selection, wherein the main screen is converted into the subscreen by gradually reducing the main screen at a constant aspect ratio and the subscreen is converted into the main screen by gradually enlarging the subscreen at the constant aspect ratio.

35. The method of claim 34, further comprising scaling and displaying the main screen at a 4:

3 aspect ratio having a resolution of 1024×

768 and scaling and displaying the subscreen at the 4;

3 aspect ratio having the resolution of 256×

192.

36. The method of claim 35, further comprising providing undistorted screen information to the user and minimizing a loss of information in screen conversion by simultaneously displaying the main screen and the subscreen while maintaining a constant aspect ratio of the main screen and the subscreen.

37. The method of claim 36, further comprising selecting from among various displays on an on screen display menu to display the double screen, wherein the various displays comprise a picture-in-picture display, a picture-by-picture display, and the picture-with-picture display.

38. The method of claim 37, further comprising outputting each of the main screen and subscreen video signal from one of a D-SUB terminal, DVI terminal, S-VIDEO terminal, television tuner, and COMPOSITE terminal output.

39. A method of displaying a double screen in a display device capable of displaying the double screen, the method comprising:

displaying a main display at either side of a screen of the display device; and

displaying a subscreen display on a portion of a remaining area of the screen, wherein the main and subscreen displays each have a 4;

3 aspect ratio.

40. The method of claim 39, further comprising simultaneously converting the main display into the subscreen display and the subscreen display into the main display.

41. The method of claim 40, further comprising maintaining the 4:

3 aspect ratio of the main and subscreen displays during the converting.