Display apparatus, 3D glasses, and control method thereof

• US 8,854,429 B2
• Filed: 01/04/2012
• Issued: 10/07/2014
• Est. Priority Date: 01/04/2011
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Seo, Je-hwan, Hwang, Tae-don, Kang, Yong-jin, Jung, Do-sung
• Primary Examiner(s): Perungavoor, Sath V
• Assistant Examiner(s): WILLIAMS, JEFFERY A
• Application Number:
  US13/343,032
• Publication Number:
  US 20120169854A1
• Time in Patent Office: 1,007 Days
• Field of Search: 348/43, 348/56
• US Class Current: 348/43
• 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 a display apparatus, the method comprising:

receiving, from active glasses, a scanning message for pairing with the active glasses;

transmitting, to the active glasses, a response message for pairing, the response message comprising identification information of the display apparatus;

in response to the transmitting the response message, receiving from the active glasses an acknowledge message for pairing, the acknowledge message comprising information about identification of the active glasses;

synchronizing clocks for communicating with the active glasses;

generating drive timing information for driving shutters of the active glasses from the synchronized clocks; and

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

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

4. The method according to claim 1,

wherein the generating the drive timing information comprises generating the drive timing information using the synchronized clocks and a frame sync signal for displaying images thereon, and

wherein clocks are Bluetooth clocks, and the drive timing information comprises a count value of the Bluetooth 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 active 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 generating the drive timing information comprises generating the drive timing information using the synchronized clocks and a frame sync signal for displaying images thereon, and

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 generating the drive timing information comprises generating the drive timing information using the synchronized clocks and a frame sync signal for displaying images thereon, and

wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

9. 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.

3. A method of controlling a display apparatus, the method comprising:

receiving, from active glasses, a scanning message for pairing with the active glasses;

transmitting, to the active glasses, a response message for pairing, the response message comprising identification information of the display apparatus; and

in response to the transmitting the response message, receiving from the active glasses an acknowledge message for pairing, the acknowledge message comprising information about identification of the active glasses

wherein the response message from the display apparatus further comprises threshold received signal strength indication (RSSI) value information, and

wherein the clocks are Bluetooth clocks, and the count value of the Bluetooth clocks is transmitted using a reconnection train message for paring between the display apparatus and the active glasses.

10. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus;

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses;

synchronizing clocks for communicating with the display apparatus;

receiving a glasses control message, generated using the synchronized clocks and comprising drive timing information for driving the shutters of the active glasses, from the display apparatus; and

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

11. The method according to claim 10, wherein the clocks are Bluetooth clocks, and the synchronizing the clocks further comprises receiving a count value of the Bluetooth clocks of the display apparatus from the display apparatus.

12. The method according to claim 11, wherein the count value is received using a reconnection train message for paring between the display apparatus and the active glasses.

13. The method according to claim 11, wherein the drive timing information comprises a count value of the clocks of the display apparatus corresponding to a frame sync signal for displaying images thereon.

14. The method according to claim 13, wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

15. The method according to claim 10, wherein the glasses control message further comprises shutter-operation delay information of the active glasses.

16. The method 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 method according to claim 16, 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.

18. The method according to claim 10, wherein the glasses control message further comprises frame rate information determined in accordance with a frame sync signal for displaying images thereon.

19. The method according to claim 10, wherein the receiving the glasses control message comprises receiving the glasses control message in a longer cycle than a frame sync signal for displaying images thereon to prevent the active glasses from active mode off.

20. The method according to claim 10, further comprising stopping opening or closing the shutters if no glasses control message is received for a preset period of time.

21. The method according to claim 20, wherein the stopping opening or closing the shutters comprises stopping the shutters in an open position.

22. The method according to claim 10, 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.

23. The method according to claim 22, 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.

24. A method of controlling a display apparatus, the method comprising:

receiving, from active glasses, a scanning message for pairing with the active glasses;

transmitting, to the active glasses, a response message for pairing, the response message comprising identification information of the display apparatus; and

in response to the transmitting the response message, receiving from the active glasses an acknowledge message for pairing, the acknowledge message comprising information about identification of the active glasses,

wherein the acknowledge message from the display apparatus further comprises pairing success information and information about a state of the active glasses.

25. A display apparatus comprising:

a display unit;

a communication unit which communicates with active glasses; and

a controller which controls the communication unit to receive, from the active glasses, a scanning message for pairing with the active glasses, to transmit, to the active glasses, a response message for pairing, the response message comprising identification information of the display apparatus and, in response to the transmitting the response message, to receive from the active glasses an acknowledge message for pairing, the acknowledge message comprising information about identification of the active glasses,

wherein the acknowledge message from the display apparatus further includes pairing success information and information about a state of the active glasses.

26. A display apparatus comprising:

a display unit;

a communication unit which communicates with active glasses;

a controller which controls the communication unit to receive, from the active glasses, a scanning message for pairing with the active glasses, to transmit, to the active glasses, a response message for pairing, the response message comprising identification information of the display apparatus and, in response to the transmitting the response message, to receive from the active glasses an acknowledge message for pairing, the acknowledge message comprising information about identification of the active glasses;

a signal generator which generates drive timing information for driving shutters of the active glasses using clocks for communicating with the active glasses,

wherein the controller controls the communication unit to synchronize the clocks for communicating with the active glasses and to transmit a glasses control message comprising the drive timing information to the active glasses.

27. The display apparatus according to claim 26, wherein the clocks are Bluetooth clocks, and wherein the communication unit transmits a count value of the Bluetooth clocks of the display apparatus to the active glasses so as to synchronize the clocks.

28. The display apparatus according to claim 27, wherein the count value is transmitted using a reconnection train message for paring between the display apparatus and the active glasses.

29. The display apparatus according to claim 26,

wherein the controller controls the signal generator to generate the drive timing information using the synchronized clock and a frame signal for displaying images thereon, and

wherein the clocks are Bluetooth clocks, and the drive timing information comprises a count value of the Bluetooth clocks of the display apparatus corresponding to the frame sync signal.

30. The display apparatus according to claim 26, wherein the glasses control message further comprises shutter-operation delay information of the active glasses.

31. The display apparatus according to claim 30, 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.

32. The display apparatus according to claim 26,

wherein the controller controls the signal generator to generate the drive timing information using the synchronized clock and a frame signal for displaying images thereon, and

wherein the glasses control message further comprises frame rate information determined in accordance with the frame sync signal.

33. The display apparatus according to claim 26,

wherein the controller controls the signal generator to generate the drive timing information using the synchronized clock and a frame signal for displaying images thereon, and

wherein the frame sync signal comprises a vertical sync signal (Vsync) of the image.

34. The display apparatus according to claim 26, 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.

35. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus;

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses; and

if two or more response messages are received from two or more display apparatuses, selecting a display apparatus that transmitted a response message having a highest received signal strength indication (RSSI) value of RSSI values of the two or more response messages.

36. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus;

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses; and

if no response message is received, repeating transmitting the scanning message or pairing with a display apparatus for a predetermined period of time.

37. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus; and

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the acknowledge message from the display apparatus further includes pairing success information and information about a state of the active glasses.

38. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus; and

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the response message from the display apparatus further includes received signal strength indication (RSSI) value information.

39. A method of controlling active glasses, the method comprising:

transmitting a scanning message for pairing with a display apparatus;

receiving a response message for pairing, from the display apparatus, the response message comprising identification information of the display apparatus;

in response to the receiving the response message, transmitting an acknowledge message for pairing, to the display apparatus, the acknowledge message comprising information about identification of the active glasses;

receiving a glasses control message from the display apparatus, the glasses control message comprising drive timing information for driving shutters of the active glasses; and

controlling the shutters to be opened or closed in sync with the drive timing information obtained from the glasses control message.

40. The method according to claim 39, further comprising:

receiving a reconnection train message comprising a count value of a Bluetooth clock of the display apparatus;

determining a current count value of the Bluetooth clock of the display apparatus; and

generating a local clock signal using a local oscillator according to the determined current count value of the Bluetooth clock of the display apparatus such that the local clock signal is synchronized with the Bluetooth clock of the display apparatus.

41. The method according to claim 40, wherein the drive timing information is generated by the display apparatus using a synchronized clock signal and a frame sync signal for displaying images thereon.

42. Active 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 controls the communication unit to transmit a scanning message for pairing with a display apparatus, to receive a response message for pairing from the display apparatus, the response message comprising identification information of the display apparatus and, in response to the receiving the response message, to transmit an acknowledge message for pairing to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein, if no response message is received, the communication unit repeats transmitting the scanning message for pairing with a display apparatus for a predetermined period of time.

43. Active 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 controls the communication unit to transmit a scanning message for pairing with a display apparatus, to receive a response message for pairing from the display apparatus, the response message comprising identification information of the display apparatus and, in response to the receiving the response message, to transmit an acknowledge message for pairing to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the acknowledge message from the display apparatus further comprises pairing success information and information about a state of the active glasses.

44. Active 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 controls the communication unit to transmit a scanning message for pairing with a display apparatus, to receive a response message for pairing from the display apparatus, the response message comprising identification information of the display apparatus and, in response to the receiving the response message, to transmit an acknowledge message for pairing to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the response message from the display apparatus further comprises threshold received signal strength indication (RSSI) value information.

45. Active 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 controls the communication unit to transmit a scanning message for pairing with a display apparatus, to receive a response message for pairing from the display apparatus, the response message comprising identification information of the display apparatus and, in response to the receiving the response message, to transmit an acknowledge message for pairing to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the communication unit receives a glasses control message, which comprises drive timing information for driving shutters of the active glasses, from the display apparatus, and the control unit controls the shutters to be opened or closed in sync with the drive timing information obtained from the glasses control message.

46. The active glasses according to claim 45, wherein the communication unit receives a reconnection train message comprising a count value of a Bluetooth clock of the display apparatus, and

the control unit determines a current count value of the Bluetooth clock of the display apparatus and generates a local clock signal using a local oscillator according to the determined current count value of the Bluetooth clock of the display apparatus, such that the local clock signal is synchronized with the Bluetooth clock of the display apparatus.

47. The active glasses according to claim 46, wherein the drive timing information is generated by the display apparatus using a synchronized clock signal and a frame sync signal for displaying images thereon.

48. Active 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 controls the communication unit to transmit a scanning message for pairing with a display apparatus, to receive a response message for pairing from the display apparatus, the response message comprising identification information of the display apparatus and, in response to the receiving the response message, to transmit an acknowledge message for pairing to the display apparatus, the acknowledge message comprising information about identification of the active glasses,

wherein the control unit synchronizes clocks for communicating with the display apparatus, controls the communication unit to receive a glasses control message, generated using the synchronized clocks and comprising drive timing information for driving shutters of the active glasses, from the display apparatus, and controls the shutters to be opened or closed in sync with the received drive timing information.

49. The active glasses according to claim 48, wherein the clocks are Bluetooth clocks, and wherein the controller synchronizes the Bluetooth clocks by receiving a count value of the clocks of the display apparatus from the display apparatus.

50. The active glasses according to claim 49, wherein the count value is received using a reconnection train message for paring between the display apparatus and the active glasses.

51. The active glasses according to claim 49, wherein the drive timing information comprises a count value of the clocks of the display apparatus at a point of time related to a frame sync signal of a displayed image.

52. The active glasses according to claim 51, wherein the frame sync signal comprises a vertical sync (Vsync) signal of the image.

53. The active glasses according to claim 48, wherein the glasses control message further comprises shutter-operation delay information of the active glasses.

54. The active glasses according to claim 53, 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.

55. The active glasses according to claim 53, 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.

56. The active glasses according to claim 48, wherein the glasses control message further comprises frame rate information determined by a frame sync signal of a displayed image.

57. The active glasses according to claim 56, wherein the glasses control message is received in a longer cycle than the frame sync signal to prevent the active glasses from active mode off.

58. The active glasses according to claim 48, 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.

59. The active glasses according to claim 58, wherein the controller stops opening or closing the shutters by stopping the shutters in an open position.

60. The active glasses according to claim 48, 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.

61. The active glasses according to claim 60, 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.