Display apparatus and control method thereof

• US 7,583,256 B2
• Filed: 08/04/2005
• Issued: 09/01/2009
• Est. Priority Date: 08/06/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Young-chan, Park, Dong-sik, Lee, Sang-hak
• Primary Examiner(s): Dharia; Prabodh M.
• Application Number:
  US11/196,327
• Publication Number:
  US 20060033841A1
• Time in Patent Office: 1,489 Days
• Field of Search: 345/3.3, 345/691, 345/603, 345/329, 345/330, 345/698, 345/699, 345/501, 345/427, 345204-206, 345/545, 345/424, 348/14.01, 348/536, 348/500, 348552-559, 348/521, 348/540, 348/542, 348/443, 348/444, 348/458, 348/207.2, 709/233, 709/204, 386/17, 375/355, 358/518, 358/515, 351/206, 331/17, 382/128, 382/145, 382/152, 700/83
• US Class Current: 345/204
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• 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 method of controlling a display apparatus displaying a picture according to an input video signal including a horizontal synchronous signal and a vertical synchronous signal includes setting one or more exclusive display modes, setting whether to apply an auto-adjustment function to the video signal, determining a display mode of the video signal according to the horizontal and vertical synchronous signals when the auto-adjustment function is set to operate, and performing the auto-adjustment function when the determined display mode is not equal to any one of the one or more exclusive display modes. The display apparatus and the control method thereof selectively perform the auto-adjustment function according to the display mode of the input video signal.

Claims

1. A method of controlling a display apparatus displaying a picture based on an input video signal including a horizontal synchronous signal and a vertical synchronous signal, the method comprising:

setting one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed;

setting whether to apply an auto-adjustment function to the video signal;

determining a display mode of the video signal according to the horizontal and vertical synchronous signals when the auto-adjustment function is set to operate; and

performing the auto-adjustment function when the determined display mode is not equal to any one of the one or more exclusive display modes.

2. The method according to claim 1, wherein the one or more exclusive display modes include the display mode of the video signal provided during a booting process of a computer that outputs the video signal to the display apparatus.

3. The method according to claim 2, wherein the performing of the auto-adjustment function comprises:

detecting a back porch interval of the video signal from at least one of the horizontal and vertical synchronous signals;

detecting an H-total value of the video signal from at least one of the horizontal and vertical synchronous signals; and

performing the auto-adjustment function either when the detected back porch interval is not equal to a preset back porch interval or when the detected H-total value is not equal to a preset H-total value.

4. A display apparatus displaying a picture based on an input video signal including a horizontal synchronous signal and a vertical synchronous signal, the display apparatus comprising:

a data storage to store information about one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed;

an auto-adjustment setter to set whether to apply an auto-adjustment function to the video signal; and

a controller to determine a display mode of the video signal according to the horizontal and vertical synchronous signals when the auto-adjustment function is set to operate by the auto adjustment setter, and to perform the auto-adjustment function when the determined display mode is not equal to any one of the exclusive display modes.

5. The display apparatus according to claim 4, wherein the one or more exclusive display modes include the display mode of the video signal provided during a booting process of a computer that outputs the video signal to the display apparatus.

6. The display apparatus according to claim 5, wherein the controller detects either a back porch interval or an H-total value of the video signal from at least on of the horizontal and vertical synchronous signals, and performs the auto-adjustment function either when the detected back porch interval is not equal to a preset back porch interval or when the detected H-total value is not equal to a preset H-total value.

7. A display apparatus, comprising:

a data storage to store information about one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed; and

a controller to apply an auto-adjustment function to an input video signal when a display mode of the input video signal is not equal to any one of the one or more exclusive display modes.

8. The display apparatus according to claim 7, further comprising:

a display module; and

a scaler to selectively adjust a display state of the input video signal according to a first display state, in which the auto-adjustment function is applied, and a second display state, in which the auto-adjustment function is not applied, so that a picture corresponding to the input video signal is displayed on the display module according to the selectively adjusted display state.

9. The display apparatus according to claim 8, wherein the scaler adjusts the display state of the input video signal according to the first display state when the display mode of the input video signal is not the one or more exclusive display modes, and adjusts the display state of the input video signal according to the second display state when the display mode of the input video signal is one of the one or more exclusive display modes.

10. The display apparatus according to claim 7, wherein the controller prevents the auto-adjustment function from being automatically applied to the input video signal.

11. The display apparatus according to claim 7, wherein the input video signal is generated from a computer during booting the computer.

12. The display apparatus according to claim 7, wherein the input video signal comprises horizontal and vertical synchronous signals, and the controller selectively applies the auto-adjustment function to the input video signal according to a characteristic of at least one of the horizontal and vertical synchronous signals.

13. The display apparatus according to claim 12, wherein the characteristic of the at least one of the horizontal and vertical synchronous signals comprises a back porch interval.

14. The display apparatus according to claim 12, wherein the characteristic of the at least one of the horizontal and vertical synchronous signals comprises an H-total value of the input video signal.

15. The display apparatus according to claim 12, further comprising:

an auto-adjustment setter to set the auto-adjustment function to be applied to input video signals having different display modes,

wherein the controller prevents the auto-adjustment function from being applied to the input video signal according to the display mode of the input video signal, the one or more exclusive display modes, and the characteristic of the at least one of the horizontal and vertical synchronous signals.

16. The display apparatus according to claim 7, further comprising:

an auto-adjustment setter to set the controller to apply the auto-adjustment function to the input video signal,

wherein the controller does not apply the auto-adjustment function to the input video signal when the display mode of the input video signal corresponds to the one or more exclusive display modes.

17. The display apparatus according to claim 7, wherein the one or more exclusive display modes is one of resolutions of 640×

350 at 85 Hz, 640×

480 at 60 Hz, 720×

400 at 85 Hz, and 800×

600 at 60 Hz.

18. A method of controlling a display apparatus displaying a picture corresponding to an input video signal, the method comprising:

storing information about one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed; and

applying an auto-adjustment function to an input video signal when a display mode of the input video signal is not equal to an one of the one or more exclusive display modes.

19. A display apparatus, comprising:

a data storage to store information about one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed; and

a controller to compare a display mode of the input video signal and the one or more exclusive display modes, and to a an auto adjustment when the determined display mode is not equal to any one of the one or more exclusive display modes.

20. A method of controlling a display apparatus displaying a picture corresponding to an input video signal, the method comprising:

storing information about one or more exclusive display modes which the video signal outputted from a video signal source is temporarily changed; and

comparing a display mode of the input video signal with the one or more exclusive display modes, and applying an auto adjustment when the determined display mode is not equal to an one of the one or more exclusive display modes.