Image display apparatus and method of controlling the same

1. An image display apparatus comprising:

a first audio receiver;

a display to display a content;

a communication unit to receive a control signal from a remote controller; and

a controller configured to:

in response to receiving a first audio input for beginning a speech recognition function from the first audio receiver, begin the speech recognition function and initialize a standby time,

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches a first reference time after the beginning of the speech recognition function, end the speech recognition function begun by the first audio input, and

in response to a second audio input for speech recognition being received via the first audio receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, perform an operation according to the second audio input, and control the display to display a result of the operation,

wherein the remote controller includes:

a button for controlling image display apparatus to begin the speech recognition function,

a second audio receiver to receive a third audio input wherein the third audio input is received as a user voice via the second audio receiver of the remote controller, and

a communicator to communicate with the image display apparatus and to transmit the control signal to the image display apparatus,

wherein the controller is further configured to end the speech recognition function begun by the first audio input in response to the control signal generated by the button of the remote controller being received after the beginning of the speech recognition function according to the first audio input and before the standby time reaches the first reference time after the beginning of the speech recognition function.

2. The image display apparatus according to claim 1 , wherein the controller is configured to, in response to the second audio input for speech recognition being received via the first audio receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, initialize the standby time.

3. The image display apparatus according to claim 1 , further comprising an audio output unit to output an audio signal,

wherein the controller is configured to, in response to receiving the first audio input for beginning the speech recognition function, decrease a volume of the audio signal output through the audio output unit to a predetermined level.

4. The image display apparatus according to claim 3 , wherein the controller is configured to, in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches the first reference time after the beginning of the speech recognition function, restore the volume of the audio signal output through the audio output unit to a volume level set before the speech recognition function begins.

5. The image display apparatus according to claim 3 , wherein the predetermined level is not zero level.

6. The image display apparatus according to claim 1 , further comprising an audio output unit to output an audio signal, wherein the controller is configured to:

in response to receiving the first audio input for beginning the speech recognition function, decrease a volume of the audio signal output through the audio output unit to a predetermined level,

after displaying the result of the operation according to the second audio input on the display, re-begin the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initialize the standby time,

in response to no audio input for speech recognition being received via the first receiver until the standby time reaches a second reference time after displaying the result on the display, end the speech recognition function, and

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches the second reference time after the receiving of the second audio input, restore the volume of the audio signal output through the audio output unit to a volume level set before the speech recognition function begins.

7. The image display apparatus according to claim 1 , wherein the controller is further configured to:

after displaying the result of the operation according to the second audio input on the display, re-begin the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initialize the standby time, and

in response to no audio input for speech recognition being received via the first receiver until the standby time reaches a second reference time after displaying the result on the display, end the speech recognition function, wherein the second reference time is different from the first reference time.

8. The image display apparatus according to claim 1 , wherein the controller is further configured to:

after displaying the result of the operation according to the second audio input on the display, re-begin the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initialize the standby time, and

in response to no audio input for speech recognition being received via the first receiver until the standby time reaches a second reference time after displaying the result on the display, end the speech recognition function,

wherein the second reference time is longer than the first reference time.

9. The image display apparatus according to claim 1 , further comprising a background sound canceller to cancel background sound other than the user voice from the audio receiver.

10. The image display apparatus according to claim 1 , wherein the controller is configured to, in response to receiving a control signal for ending the speech recognition function from the remote controller, end the speech recognition function.

11. The image display apparatus according to claim 1 , wherein the controller is further configured to:

after displaying the result of the operation according to the second audio input on the display, re-begin the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initialize the standby time, and

in response to no audio input for speech recognition being received via the first receiver until the standby time reaches a second reference time after displaying the result on the display, end the speech recognition function.

12. The image display apparatus according to claim 1 , wherein the remote controller is configured to transmit the control signal to the image display apparatus in response to the button being pressed, and

the controller is further configured to begin the speech recognition function and initialize the standby time in response to receiving the control signal from the remote controller.

13. The image display apparatus according to claim 12 , wherein the remote controller is configured to:

in response to no audio input for speech recognition being received via the second audio receiver until the standby time reaches the first reference time after the beginning of the speech recognition function, end the speech recognition function, and

in response to the third audio input for speech recognition being received via the second audio receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, perform an operation according to the third audio input, and control the display to display a result of the operation according to the third audio input.

14. The image display apparatus according to claim 1 , wherein the standby time is a time for which the image display apparatus waits until a user inputs a voice command after the speech recognition function begins.

15. A method of controlling an image display apparatus including a remote controller, the method comprising:

displaying a content on the image display apparatus;

receiving, via a first audio receiver of the image display apparatus, a first audio input for beginning speech recognition function;

in response to the receiving of the first audio input for beginning speech recognition via the first audio receiver, beginning the speech recognition function and itializing a standby time;

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches a first reference time after the beginning of the speech recognition function, ending the speech recognition function;

in response to a second audio input for speech recognition being received via the first receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, performing an operation according to the second audio input, displaying a result of the operation,

wherein the remote controller includes:

a button for controlling the image display apparatus to begin the speech recognition function;

a second audio receiver to receive a third audio input wherein the third audio input is received as a user voice via the second audio receiver of the remote controller; and

a communicator to communicate with the image display apparatus and to transmit a control signal to the image display apparatus, and

wherein the method further comprises:

ending the speech recognition function begun by the first audio input in response to the control signal generated by the button of the remote controller being received after the beginning of the speech recognition function according to the first audio input and before the standby time reaches the first reference time after the beginning of the speech recognition function.

16. The method according to claim 15 , further comprising, in response to the audio input for speech recognition being received via the first audio receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, initializing the standby time.

17. The method according to claim 15 , further comprising, in response to receiving the first audio input for beginning the speech recognition function, decreasing a volume of an audio signal output through the image display apparatus to a predetermined level.

18. The method according to claim 17 , further comprising, in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches the first reference time after the beginning of the speech recognition function, restoring the volume of the audio signal output through the image display apparatus to a volume level set before the speech recognition function begins.

19. The method according to claim 17 , further comprising, in response to receiving the first audio input for beginning the speech recognition function, decreasing a volume of an audio signal output through the image display apparatus to a predetermined level,

after displaying the result of the operation according to the second audio input, re- beginning the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initializing the standby time,

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches a second reference time after displaying the result on the display, ending the speech recognition function, and

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches the second reference time after the displaying the result on the image display apparatus, restoring the volume of the audio signal output through the image display apparatus to a volume level set before the speech recognition function begins.

20. The method according to claim 17 , wherein the predetermined level is not zero level.

21. The method according to claim 15 , further comprising, after displaying the result of the operation according to the second audio input, re-beginning the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initializing the standby time, and

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches a second reference time after displaying the result on the display, ending the speech recognition function, wherein the second reference time is different from the first reference time.

22. The method according to claim 15 , further comprising, after displaying the result of the operation according to the second audio input, re-beginning the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initializing the standby time, and

in response to no audio input for speech recognition being received via the first audio receiver until the standby time reaches a second reference time after displaying the result on the display, ending the speech recognition function, wherein the second reference time is longer than the first reference time.

23. The method according to claim 15 , further comprising canceling background sound other than the user voice from the audio receiver.

24. The method according to claim 15 , further comprising, in response to receiving a control signal for ending the speech recognition function from the remote controller, ending the speech recognition function.

25. The method according to claim 15 , further comprising:

after displaying the result of the operation according to the second audio input on the display, re-beginning the speech recognition function for receiving a fourth audio input for speech recognition associated with the result and initializing the standby time, and

in response to no audio input for speech recognition being received via the first receiver until the standby time reaches a second reference time after displaying the result on the display, ending the speech recognition function.

26. The method according to claim 15 , further comprising:

transmitting, by the remote controller, the control signal to the image display apparatus in response to the button being pressed, and

beginning, by the image display apparatus, the speech recognition function and initializing the standby time in response to receiving the control signal from the remote controller.

27. The method according to claim 26 , further comprising,

in response to no audio input for speech recognition being received via the second audio receiver until the standby time reaches the first reference time after the beginning of the speech recognition function, ending the speech recognition function, and

in response to the third audio input for speech recognition being received via the second audio receiver before the standby time reaches the first reference time after the beginning of the speech recognition function, performing an operation according to the third audio input, and displaying a result of the operation according to the third audio input.

28. The method according to claim 15 , wherein the standby time is a time for which the image display apparatus waits until a user inputs a voice command after the speech recognition function begins.