Display driver

• US 20070052857A1
• Filed: 08/30/2006
• Published: 03/08/2007
• Est. Priority Date: 09/08/2005
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Jae-Youl, Kim, Jong-Seon, Song, Min-Seok
• Application Number:
  US11/512,627
• Publication Number:
  US 20070052857A1
• Time in Patent Office: Days
• US Class Current: 348/565
• CPC Class Codes: G06F 3/1431 using a single graphics controller
• CPC Class Codes: G09G 2370/025 LAN communication management
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04

Abstract

A display driver includes a first interface controller, a signal selector, a driver logic unit and a second interface controller. The first interface controller processes a control command transferred through a first interface mode to provide a path control command and a panel control command. The signal selector receives the path control command from the first interface controller, and separates a first video signal and a second video signal from a video signal conforming to a video interface mode. The driver logic unit receives the first video signal from the signal selector and the panel control command from the first interface controller to drive a display panel. The second interface controller outputs the second video signal device through a second interface mode to an external.

Claims

1. A display driver comprising:

a first interface controller configured to process a control command transferred through a first interface mode to provide a path control command and a panel control command;

a signal selector configured to receive the path control command from the first interface controller, and configured to separate a first video signal and a second video signal from a video signal conforming to a video interface mode;

a driver logic unit configured to receive the first video signal from the signal selector and the panel control command from the first interface controller to drive a display panel; and

a second interface controller configured to output the second video signal through a second interface mode to an external device.

2. The display driver of claim 1, wherein the first interface controller provides the panel control command to the driver logic unit when the control command comprises the panel control command for controlling the driver logic unit, and wherein the first interface controller is configured to enable the second interface controller to output the second video signal when the control command comprises the path control command for controlling an output of the second video signal.

3. The display driver of claim 2, wherein the second interface mode comprises the video interface mode.

4. The display driver of claim 1, further comprising a video interface converter configured to convert a signal received through a third interface mode including video synchronization data to the video signal conforming to the video interface mode.

5. The display driver of claim 4, wherein the third interface mode comprises a high-speed serial interface mode including the video synchronization data.

6. The display driver of claim 1, wherein the first interface mode comprises a serial peripheral interface (SPI) mode.

7. The display driver of claim 6, wherein the first interface controller processes the control command based on an identifier of an SPI header.

8. A display driver comprising:

a first interface controller configured to receive an input video signal and a control command through a first interface mode, configured to process the control command to provide a path control command and a panel control command, and configured to convert the input video signal to a video signal conforming to a video interface mode, the video signal including video synchronization data;

a signal selector configured to receive the path control command and the video signal from the first interface controller, and configured to separate a first video signal and a second video signal from the video signal;

a driver logic unit configured to receive the first video signal from the signal selector and the panel control command from the first interface controller to drive a display panel; and

a second interface controller configured to output the second video signal through a second interface mode to an external device.

9. The display driver of claim 8, wherein the first interface controller provides the control command to the driver logic unit when the control command comprises the panel control command for controlling the driver logic unit, and configured to enable the second interface controller to output the second video signal when the control command comprises the path control command for controlling an output of the second video signal.

10. The display driver of claim 9, wherein the second interface mode comprises the video interface mode.

11. The display driver of claim 8, wherein the first interface mode comprises a high-speed serial interface mode including video synchronization data.

12. A display driver comprising:

a first interface controller configured to process a control command transferred through a first interface mode to provide a path control command and a panel control command;

a first signal selector configured to receive the path control command from the first interface controller, and configured to separate a first video signal and a second video signal from a video signal conforming to a video interface mode;

a second signal selector configured to receive the path control command and the panel control command from the first interface controller, and configured to separate a first panel control command and a second panel control command from the path control command;

a driver logic unit configured to receive the first video signal and the first panel control command to drive a display panel; and

a second interface controller configured to output the second video signal and the second panel control command through a second interface mode to an external device.

13. The display driver of claim 12, wherein the second interface mode comprises a microprocessor unit (MPU) interface mode.

14. The display driver of claim 13, further comprising a buffer configured to temporarily store the second panel control command,

wherein the second interface controller outputs the second panel control command during a blanking interval of the second video signal.

15. The display driver of claim 14, wherein the blanking interval comprises a vertical blanking interval.

16. The display driver of claim 12, further comprising a video interface converter configured to convert a signal received through a third interface mode including video synchronization data to the video signal conforming to the video interface mode.

17. The display driver of claim 16, wherein the third interface mode comprises a high-speed serial interface mode including video synchronization data.

18. The display driver of claim 12, wherein the first interface mode comprises an SPI mode.

19. The display driver of claim 18, wherein the first interface controller processes the control based on an identifier of an SPI header.

20. A display driver comprising:

a first interface controller configured to receive an input video signal and a control command through a first interface mode, configured to process the control command to provide a path control command and a panel control command, and configured to convert the input video signal to a video signal conforming to a video interface mode, the video signal including video synchronization data;

a first signal selector configured to receive the path control command and the video signal from the first interface controller, and configured to separate a first video signal and a second video signal from the video signal;

a second signal selector configured to receive the path control command and the panel control command from the first interface controller, and configured to separate a first panel control command and a second panel control command from the panel control command;

a driver logic unit configured to receive the first video signal and the first panel control command to drive a display panel; and

a second interface controller configured to output the second video signal and the second panel control command through a second interface mode to an external device.

21. The display driver of claim 20, wherein the second interface mode comprises an MPU interface mode.

22. The display driver of claim 21, further comprising a buffer configured to temporarily store the second panel control command,

wherein the second interface controller outputs the second panel control command during a blanking interval of the second video signal.

23. The display driver of claim 22, wherein the blanking interval comprises a vertical blanking interval.

24. The display driver of claim 20, wherein the first interface mode comprises a high-speed serial interface mode.

25. A display device comprising:

a display panel;

a first interface controller configured to process a control command transferred through a first interface mode to provide a path control command and a panel control command;

a signal selector configured to receive the path control command from the first interface controller, and configured to separate a first video signal and a second video signal from a video signal transferred through a video interface mode;

a driver logic unit configured to receive the first video signal from the signal selector and the panel control command from the first interface controller to drive the display panel; and

a second interface controller configured to output the second video signal through a second interface to an external device.

26. The display device of claim 25, wherein the first interface controller provides the control command to the driver logic unit when the control command comprises the panel control command for controlling the driver logic unit, and configured to enable the second interface controller to output the second video signal through the video interface mode when the control command comprises the path control command for controlling an output of the second video signal.

27. The display device of claim 25, further comprising a video interface converter configured to convert a signal received through a high-speed serial interface mode including video synchronization data to the video signal conforming to the video interface mode.

28. The display device of claim 25, wherein the first interface mode comprises an SPI mode, and

wherein the first interface controller processes the control based on an identifier of an SPI header.

29. A display device comprising:

a display panel;

a first interface controller configured to receive an input video signal and a control command through a first interface mode, configured to process the control command to provide a path control command and a panel control command, and configured to convert the input video signal to a video signal conforming to a video interface mode, the video signal including video synchronization data;

a signal selector configured to receive a path control command the video signal from the first interface controller, and configured to separate a first video signal and a second video signal from the converted video signal;

a driver logic unit configured to receive the first video signal to drive the display panel using the first video signal; and

a second interface controller configured to output the second video signal through a second interface mode to an external device.

30. The display device of claim 29, wherein the first interface controller provides the control command to the driver logic unit when the control command comprises the panel control command for controlling the driver logic unit, and configured to enable the second interface controller to output the second video signal through the video interface mode when the control command comprises the path control command corresponding to an output of the second video signal.

31. The display device of claim 29, wherein the first interface mode comprises a high-speed serial interface mode including video synchronization data.

32. A display device comprising:

a display panel;

a first interface controller configured to process a control command transferred through a first interface mode to provide a path control command and a panel control command;

a first signal selector configured to receive the path control command from the first interface controller, and configured to separate a first video signal and a second video signal from a video signal conforming to a video interface mode;

a second signal selector configured to receive the path control command and the panel control command from the first interface controller, and configured to separate a first panel control command and a second panel control command from the panel control command;

a driver logic unit configured to receive the first video signal and the first panel control command to drive the display panel; and

a second interface controller configured to output the second video signal and the second panel control command through a second interface mode to an external device.

33. The display device of claim 32, further comprising a buffer configured to temporarily store the second panel control command,

wherein the second interface controller outputs the second panel control command through the MPU interface mode during a vertical blanking interval of the second video signal.

34. The display device of claim 32, further comprising a video interface converter configured to convert a signal transferred through a high-speed serial interface mode including video synchronization data to the video signal conforming to the video interface mode.

35. The display device of claim 32, wherein the first interface mode comprises an SPI mode, and

wherein the first interface controller processes the control based on an identifier of an SPI header.

36. A display device comprising:

a display panel;

a first interface controller configured to receive an input video signal and a control command through a first interface mode, configured to process the control command to provide a path control command and a panel control command, and configured to convert the input video signal to a video signal conforming to a video interface mode, the video signal including video synchronization data;

a first signal selector configured to receive the path control command and the video signal from the first interface controller, and configured to separate a first video signal and a second video signal from the converted video signal;

a second signal selector configured to receive the path control command and the panel control command from the first interface controller, and configured to separate a first panel control command and a second panel control command from the panel control command;

a driver logic unit configured to receive the first video signal the first panel control command to drive the display panel; and

a second interface controller configured to output the second video signal and the second panel control command through a second interface mode to an external device.

37. The display device of claim 36, further comprising a buffer configured to temporarily store the second panel control command,

wherein the second interface controller outputs the second panel control command through an MPU interface mode during a vertical blanking interval of the second video signal.

38. The display device of claim 36, wherein the first interface mode comprises a high-speed serial interface mode.

39. A display system comprising:

a processor configured to provide a video signal including video synchronization data, and a control command;

a first display device configured to process the control command to separate a first video signal and a second video signal from the video signal, configured to display a first video image based on the first video signal, and configured to provide the second video signal through a video interface mode; and

a second display device configured to display a second video image based on the second video signal received from the first display device.

40. The display system of claim 39, wherein the processor provides the video signal through the video interface mode and provides the control command through an SPI mode.

41. The display system of claim 39, wherein the processor provides the video signal through a high-speed serial interface mode and provides the control command through an SPI mode.

42. The display system of claim 39, wherein the processor provides the video signal and the control command through a high-speed serial interface mode.

43. A display system comprising:

a processor configured to provide a video signal including video synchronization data, and a control command;

a first display device configured to process the control command to separate a first video signal and a second video signal from the video signal, configured to display a first video image based on the first video signal and the control command corresponding to the first video signal, configured to provide the control command corresponding to the second video signal during a vertical blanking interval of the second video signal, and configured to provide the second video signal through a video interface mode; and

a second display device configured to display a second video image based on the second video signal and the control command received from the first display device.

44. The display system of claim 43, wherein the processor provides the video signal through the video interface mode and provides the control command through an SPI mode.

45. The display system of claim 43, wherein the processor provides the video signal through a high-speed serial interface mode and provides the control command through an SPI mode.

46. The display system of claim 43, wherein the processor provides the video signal and the control command through a high-speed serial interface mode.