DISPLAY APPARATUS AND CONTROL METHOD THEREOF

• US 20140226025A1
• Filed: 01/30/2014
• Published: 08/14/2014
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: HAN, Jae-ryong
• Granted Patent: US 9,293,075 B2
• Time in Patent Office: Days
• US Class Current: 348/177
• CPC Class Codes: G06F 11/263 Generation of test inputs, e.g. test vectors, patterns or sequences ; with adaptation of the tested hardware for testability with external testers
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2330/12 Test circuits or failure detection circuits included in a display system, as permanent part thereof
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/2096 Details of the interface to the display terminal specific for a flat panel suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167
• 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: H04L 1/24 Testing correct operation

Abstract

A display apparatus and a control method thereof are provided. The display apparatus includes: a communication interface configured to receive a video signal by using a preset setting value; a sensor configured to generate a test signal for checking whether the display apparatus is abnormal in order to sense an abnormality of the display apparatus; a controller configured to adjust a setting value of the communication interface in response to an abnormality of the display apparatus not being sensed; and a display configured to display the video signal received by the communication interface, the setting value of which has been adjusted.

Claims

1. A display apparatus comprising:

a communication interface configured to receive a video signal by using a preset setting value;

a sensor configured to sense an abnormality of the display apparatus by generating a test signal for checking whether the display apparatus is abnormal;

a controller configured to adjust a setting value of the communication interface, in response to the abnormality of the display apparatus not being sensed; and

a display configured to display the video signal received by the communication interface, the setting value of which has been adjusted.

2. The display apparatus of claim 1, wherein the controller is configured to control the sensor to sense the abnormality of the display apparatus only if a characteristic of the received video signal does not meet a preset condition.

3. The display apparatus of claim 1, wherein the controller is configured to adjust the setting value of the communication interface by using at least one of characteristics of a voltage level, a frequency sync, and an eye diagram of the video signal.

4. The display apparatus of claim 1, wherein the controller is configured to change at least one of an internal impedance value, a sync phase-locked loop (PLL) range, and a setting value of a signal equalizer of the communication interface in order to adjust the setting value of the communication interface.

5. The display apparatus of claim 1, wherein the controller is configured to display a menu for adjusting the setting value and adjust setting the communication interface by using the setting value input through the menu.

6. The display apparatus of claim 1, further comprising:

a storage configured to store the setting value,

wherein whenever the display apparatus restarts, the controller controls the communication interface to receive the video signal by using the stored setting value.

7. The display apparatus of claim 1, wherein in response to the abnormality of the display apparatus being sensed, the controller controls the display a message indicating to display an apparatus abnormality.

8. The display apparatus of claim 1, wherein the sensor applies the test signal to the communication interface by generating the test signal and senses the abnormality based on the characteristic of the applied test signal.

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

receiving a video signal by using a preset setting value;

sensing the abnormality of the display apparatus by generating a test signal for checking whether the display apparatus is abnormal;

in response to an abnormality of the display apparatus not being sensed, adjusting a setting value of the communication interface; and

displaying the video signal received by the communication interface, the setting value of which has been adjusted.

10. The method of claim 9, wherein the sensing the abnormality of the display apparatus comprises sensing the abnormality of the display apparatus only if a characteristic of the received video signal does not meet a preset condition.

11. The method of claim 9, wherein the setting value is adjusted by using at least one of characteristics of a voltage level, a frequency sync, and an eye diagram of the video signal.

12. The method of claim 9, wherein at least one of an internal impedance value, a sync PLL range, and a setting value of a signal equalizer of the communication interface is changed in order to adjust the setting value.

13. The method of claim 9, wherein the adjusting of the setting value comprises:

displaying a menu for adjusting the setting value; and

adjusting the setting value by using a setting value input through the menu.

14. The method of claim 9, further comprising:

storing the setting value; and

in response to the display apparatus restarting, receiving the video signal by using the stored setting value.

15. The method of claim 9, further comprising:

in response to the abnormality of the display apparatus being sensed, displaying a message indicating an apparatus abnormality.

16. The method of claim 9, wherein the sensing generates the test signal, applies the generated test signal to the communication interface, and senses the abnormality of the display apparatus based on the characteristic of the applied test signal.

17. A non-transitory computer-readable recording medium having a program stored therein as a data structure, wherein a processor of a computer causes the computer to execute program to carry out a method of controlling a display apparatus, the method comprising:

receiving a video signal by using a preset setting value;

sensing an abnormality of the display apparatus by generating a test signal for checking whether the display apparatus is abnormal;

in response to an abnormality of the display apparatus not being sensed, adjusting a setting value of the communication interface; and

displaying the video signal received by the communication interface, the setting value of which has been adjusted.