METHOD AND APPARATUS FOR DISPLAYING 3-DIMENSIONAL IMAGE AND METHOD AND APPARATUS FOR CONTROLLING SHUTTER GLASSES

• US 20110157165A1
• Filed: 12/20/2010
• Published: 06/30/2011
• Est. Priority Date: 12/30/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Dae-sik, PARK, Sang-moo, HWANG, Dong-choon, JUNG, Jong-hoon
• Granted Patent: US 8,754,932 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

An image display method includes alternately receiving left and right images of a 3D image; and turning on a backlight such that the backlight is on only in periods when the left images are displayed or only in periods when the right images are displayed. A method of controlling shutter glasses separately for left and right images of a three-dimensional (3D) image includes alternately receiving the left and right images of the 3D image; and opening two shutters of the shutter glasses only in periods when the left images are received or only in periods when the right images are received.

Claims

1. An image display method comprising:

alternately receiving left and right images of a three-dimensional (3D) image; and

turning on and off a backlight such that

the backlight is on only in periods when the left images are displayed and is off in periods when the right images are displayed, or the backlight is on only in periods when the right images are displayed and is off in periods when the left images are displayed.

2. The method of claim 1, wherein a pair of corresponding left and right images of the 3D image comprises, sequentially, two left images and two right images.

3. The method of claim 2, wherein the turning on and off of the backlight comprises turning on and off the backlight such that:

the backlight is on only in periods when one of the two left images is displayed, and is off when the other one of the two left images is displayed, or the backlight is on only in periods when one of the two right images is displayed and is off when the other one of the two right images is displayed.

4. The method of claim 1, wherein a pair of corresponding left and right images of the 3D image sequentially comprises a left image, a black image, a right image and a black image.

5. The method of claim 1, wherein a pair of corresponding left and right images of the 3D image sequentially comprises a left image, a hold image of the left image, a right image and a hold image of the right image, and

wherein the hold image is an image which constantly maintains a data voltage of a previous left or right image.

6. The method of claim 5, wherein the turning on of the backlight comprises turning on and off the backlight such that:

the backlight is on only in periods when the left image is displayed, the left image and the hold image of the left image is displayed, or the hold image of the left image is displayed;

or

the backlight is on only in periods when the right image is displayed, the right image and the hold image of the right image is displayed, or the hold image of the right image is displayed.

7. The method of claim 1, wherein a pair of corresponding left and right images of the 3D image comprises, sequentially, three left images and a right image.

8. The method of claim 1, wherein a pair of corresponding left and right images of the 3D image comprises, sequentially, four left images and four right images.

9. The method of claim 1, wherein the turning on and off of the backlight comprises turning on the backlight in synchronization with a vertical synchronization signal.

10. The method of claim 1, wherein the turning on and off of the backlight comprises turning on the backlight in synchronization with a start vertical signal or a clock pulse vertical signal.

11. The method of claim 1, wherein the turning on and off of the backlight comprises turning on the backlight by advancing or delaying periods when the backlight is turned on, according to an amount of crosstalk.

12. The method of claim 1, wherein the turning on of the backlight comprises turning on the backlight by using a scanning method.

27. A computer readable recording medium having recorded thereon a computer program for executing the method of claim 1.

13. A method of controlling shutter glasses separately for left and right images of a three-dimensional (3D) image, the method comprising:

alternately receiving the left and right images of the 3D image; and

opening two shutters of the shutter glasses such that;

the two shutters are open only in periods when the left images are received and are closed in periods when the right images are received, or

the shutters are open only in periods when the right images are received and are closed in periods when the left images are displayed.

14. The method of claim 13, wherein a pair of corresponding left and right images of the 3D image sequentially comprises two left images and two right images.

15. The method of claim 14, wherein the opening of the two shutters comprises opening the two shutters such that:

the two shutters are open only in periods when one of the two left images is received, or

the two shutters are open only in periods when one of the two right images is received.

16. The method of claim 13, wherein a pair of corresponding left and right images of the 3D image sequentially comprises a left image, a black image, a right image and a black image.

17. The method of claim 13, wherein a pair of corresponding left and right images of the 3D image sequentially comprises a left image, a hold image of the left image, a right image and a hold image of the right image, and

wherein the hold image is an image which constantly maintains a data voltage of a previous left or right image.

18. The method of claim 17, wherein the opening of the two shutters comprises opening the two shutters such that:

the two shutters are open only when at least one of the left image and the hold image of the left image is received, or

the two shutters are open only when at least one of the right image and the hold image of the right image is received.

19. The method of claim 13, wherein a pair of corresponding left and right images of the 3D image sequentially comprises three left images and a right image.

20. The method of claim 13, wherein a pair of corresponding left and right images of the 3D image sequentially comprises four left images and four right images.

21. The method of claim 13, wherein the opening of the two shutters comprises opening the two shutters in synchronization with a vertical synchronization signal.

22. The method of claim 13, wherein the opening of the two shutters comprises opening the two shutters in synchronization with a start vertical signal or a clock pulse vertical signal.

23. The method of claim 13, wherein the opening of the two shutters comprises opening the two shutters by advancing or delaying periods when the backlight is turned on, according to an amount of crosstalk.

24. The method of claim 13, wherein the opening of the two shutters comprises opening the two shutters by using a scanning method.

28. A computer readable recording medium having recorded thereon a computer program for executing the method of claim 13.

25. An image display apparatus comprising:

a display panel;

a display panel control unit for outputting left and right images of a 3D image to the display panel; and

a backlight control unit for turning a backlight on and off such that;

the backlight is on only in periods when the left images are displayed and is off in periods when the right images are displayed, or

the backlight is on only in periods when the right images are displayed and is off in periods when the left images are displayed.

26. An apparatus for controlling shutter glasses separately for left and right images of a three-dimensional (3D) image, the apparatus comprising:

a display panel;

a display panel control unit for outputting the left and right images of the 3D image to the display panel; and

a shutter glasses control unit for opening two shutters of the shutter glasses such that;

the two shutters are open only in periods when the left images are displayed and are closed in periods when the first images are displayed, or

the two shutters are open only in periods when the right images are displayed and are closed in periods when the left images are displayed.