DISPLAY APPARATUS, 3D GLASSES, AND CONTROL METHOD THEREOF

• US 20120169854A1
• Filed: 01/04/2012
• Published: 07/05/2012
• Est. Priority Date: 01/04/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hwang, Tae-don, Kang, Yong-jin, Seo, Je-hwan, Jung, Do-sung
• Granted Patent: US 8,854,429 B2
• Time in Patent Office: Days
• US Class Current: 348/56
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 2213/008 Aspects relating to glasses for viewing stereoscopic images

Abstract

Disclosed are a display apparatus, three-dimensional (3D) glasses and a control method thereof. The method of controlling three-dimensional (3D) glasses for a display apparatus includes: synchronizing clocks for communicating with the 3D glasses; generating drive timing information for driving shutters of the 3D glasses from the synchronized clocks and a frame sync signal of a displayed image; and transmitting a glasses control message, comprising the drive timing information, to the 3D glasses.

Claims

1. A method of controlling three-dimensional (3D) glasses for use with a display apparatus, the method comprising:

synchronizing clocks for communicating with the 3D glasses;

generating drive timing information for driving shutters of the 3D glasses from the synchronized clocks and a frame sync signal of a displayed image; and

transmitting a glasses control message, comprising the drive timing information, to the 3D glasses.

2. The method according to claim 1, wherein the synchronizing the clocks further comprises transmitting a count value of the clocks of the display apparatus to the 3D glasses.

3. The method according to claim 2, wherein the count value of the clocks is transmitted using a reconnection train message for paring between the display apparatus and the 3D glasses.

4. The method according to claim 1, wherein the drive timing information comprises a count value of the clocks of the display apparatus corresponding to the frame sync signal.

5. The method according to claim 1, wherein the glasses control message further comprises shutter-operation delay information of the 3D glasses.

6. The method according to claim 5, wherein the shutter-operation delay information comprises delay information regarding a timing between a reference time determined by the drive timing information and a time when a shutter is to be opened or closed.

7. The method according to claim 1, wherein the glasses control message further comprises frame rate information determined in accordance with the frame sync signal.

8. The method according to claim 1, wherein the glasses control message is transmitted in a longer cycle than the frame sync signal to prevent the 3D glasses from 3D mode off.

9. The method according to claim 1, wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

10. The method according to claim 1, further comprising

acquiring information about a display unit of the display apparatus;

and

modifying duty of the drive timing information based on the acquired information about the display unit.

11. A display apparatus comprising:

a display unit;

a communication unit which synchronizes clocks for communicating with three-dimensional (3D) glasses;

a signal generator which generates drive timing information for driving shutters of the 3D glasses from the synchronized clocks and a frame sync signal of an image displayed on the display unit; and

a controller which controls the communication unit to transmit a glasses control message comprising the drive timing information to the 3D glasses.

12. The display apparatus according to claim 11, wherein the communication unit transmits a count value of the clocks of the display apparatus to the 3D glasses so as to synchronize the clocks.

13. The display apparatus according to claim 11, wherein the count value is transmitted using a reconnection train message for paring between the display apparatus and the 3D glasses.

14. The display apparatus according to claim 11, wherein the drive timing information comprises a count value of the clocks of the display apparatus corresponding to the frame sync signal.

15. The display apparatus according to claim 11, wherein the glasses control message further comprises shutter-operation delay information of the 3D glasses.

16. The display apparatus according to claim 15, wherein the shutter-operation delay information comprises delay information regarding a timing between a reference time determined by the drive timing information and a time when a shutter is to be opened or closed.

17. The display apparatus according to claim 11, wherein the glasses control message further comprises frame rate information determined in accordance with the frame sync signal.

18. The display apparatus according to claim 11, wherein the glasses control message is transmitted in a longer cycle than the frame sync signal to prevent the 3D glasses from 3D mode off.

19. The display apparatus according to claim 11, wherein the frame sync signal comprises a vertical sync signal (Vsync) of the image.

20. The display apparatus according to claim 11, wherein the controller acquires information about the display unit, and modifies duty of the drive timing information based on the acquired information about the display unit.

30. The method according to claim 17, further comprising stopping opening or closing the shutters if no glasses control message is received for a preset period of time.

31. The method according to claim 30, wherein the stopping opening or closing the shutters comprises stopping the shutters in an open position.

21. A method of controlling shutters of three-dimensional (3D) glasses, the method comprising:

synchronizing clocks for communicating with a display apparatus;

receiving a glasses control message, generated using the synchronized clock and a frame sync signal of a displayed image and comprising drive timing information for driving the shutters of the 3D glasses, from the display apparatus; and

controlling the shutters to be opened or closed in sync with the drive timing information.

22. The method according to claim 21, wherein the synchronizing the clocks further comprises receiving a count value of the clocks of the display apparatus from the display apparatus.

23. The method according to claim 22, wherein the count value is received using a reconnection train message for paring between the display apparatus and the 3D glasses.

24. The method according to claim 21, wherein the drive timing information comprises a count value of the clocks of the display apparatus corresponding to the frame sync signal.

25. The method according to claim 21, wherein the glasses control message further comprises shutter-operation delay information of the 3D glasses.

26. The method according to claim 25, wherein the shutter-operation delay information comprises delay information regarding a timing between a reference time determined by the drive timing information and a time when a shutter is to be opened or closed.

27. The method according to claim 21, wherein the glasses control message further comprises frame rate information determined in accordance with the frame sync signal.

28. The method according to claim 21, wherein the receiving the glasses control message comprises receiving the glasses control message in a longer cycle than the frame sync signal to prevent the 3D glasses from 3D mode off.

29. The method according to claim 21, wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

32. The method according to claim 26, wherein the controlling the shutters to be opened or closed comprises controlling an operation timing and a duty of the shutters based on information about shutter-open delay and information about shutter-close delay.

33. The method according to claim 21, wherein the controlling the shutters to be opened or closed comprises

generating a first clock signal having a frequency which is half of a shutter operating frequency;

generating a second clock signal having a phase which is different from a phase of the first clock signal by a quarter cycle; and

generating a shutter operation driving signal by inverting an XOR value about logic levels of the first and second clock signals.

34. The method according to claim 33, wherein the controlling the shutters to be opened or closed comprises controlling a duty of the shutter operation driving signal by shifting the first clock signal or the second clock signal in accordance with the shutter-operation delay information.

36. The 3D glasses according to claim 21, wherein the controller synchronizes the clocks by receiving a count value of the clocks of the display apparatus from the display apparatus.

37. The 3D glasses according to claim 36, wherein the count value is received using a reconnection train message for paring between the display apparatus and the 3D glasses.

35. Three-dimensional (3D) glasses comprising:

a communication unit which communicates with a display apparatus;

a shutter unit which comprises a left-eye shutter and a right-eye shutter to be alternately opened and closed; and

a controller which synchronizes clocks for communicating with the display apparatus, controls the communication unit to receive a glasses control message, generated using the synchronized clocks and a frame sync signal of a displayed image and comprising drive timing information for driving shutters of the 3D glasses, from the display apparatus, and controls the shutters to be opened or closed in sync with the received drive timing information.

38. The 3D glasses according to claim 35, wherein the drive timing information comprises a count value of the clocks of the display apparatus at a point of time related to the frame sync signal.

39. The 3D glasses according to claim 35, wherein the glasses control message further comprises shutter-operation delay information of the 3D glasses.

40. The 3D glasses according to claim 39, wherein the shutter-operation delay information comprises delay information regarding a timing between a reference time determined by the sync signal and a time when a shutter is opened or closed.

41. The 3D glasses according to claim 35, wherein the glasses control message further comprises frame rate information determined by the frame sync signal.

42. The 3D glasses according to claim 35, wherein the glasses control message is received in a longer cycle than the frame sync signal to prevent the 3D glasses from 3D mode off.

43. The 3D glasses according to claim 35, wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

44. The 3D glasses according to claim 35, wherein the controller controls the shutter unit to stop opening or closing the shutters if no glasses control message is received for a preset period of time.

45. The 3D glasses according to claim 44, wherein the controller stops opening or closing the shutters by stopping the shutters in an open position.

46. The 3D glasses according to claim 39, wherein the controller controls the shutters to be opened or closed by controlling an operation timing and a duty of the shutters based on information about shutter-open delay and information about shutter-close delay.

47. The 3D glasses according to claim 35, wherein the controller controls the shutters to be opened or closed by

generating a first clock signal having a frequency which is half of a shutter operating frequency;

generating a second clock signal having a phase which is different form a phase of the first clock signal by a quarter cycle; and

generating a shutter operation driving signal by inverting an XOR value about logic levels of the first and second clock signals.

48. The 3D glasses according to claim 47, wherein the controller controls the shutters to be opened or closed by controlling a duty of the shutter operation driving signal by shifting the first clock signal or the second clock signal in accordance with the shutter-operation delay information.