Electronic apparatus and controlling method thereof

1. An electronic apparatus, comprising:

a memory configured to store computer executable instructions;

a display; and

a processor configured to, by executing the computer executable instructions:

control the display to display an image corresponding to a content,

based on a mute interval being detected by analyzing an input signal corresponding to the content, identify whether a first signal of the input signal before the mute interval and a second signal of the input signal after the mute interval are continuous by comparing a feature of the first signal with a feature of the second signal, and

based on identifying that the first signal and the second signal are not continuous, identify an occurrence of a channel change event in which the content is changed to another content.

2. The electronic apparatus as claimed in claim 1 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the processor is further configured to perform an image capturing operation from a beginning of the mute interval, and, based on the occurrence of the channel change event being identified, analyze an image captured by the image capturing operation and obtain information on a changed channel.

3. The electronic apparatus as claimed in claim 2 , wherein the processor is further configured to identify a channel change message from the image captured by the image capturing operation, and obtain the information on the changed channel from the channel change message.

4. The electronic apparatus as claimed in claim 3 , wherein the processor is further configured to acquire texts included in the channel change message through optical character recognition (OCR) or scene text recognition (STR), and obtain the information on the changed channel based on the acquired texts.

5. The electronic apparatus as claimed in claim 2 , wherein the processor is further configured to identify the occurrence of the channel change event based on the audio signals before and after the mute interval being identified to be discontinuous and a channel change message being included in the image captured by the image capturing operation.

6. The electronic apparatus as claimed in claim 2 , wherein the processor is further configured to terminate the image capturing operation based on the audio signals before and after the mute interval being identified to be continuous.

7. The electronic apparatus as claimed in claim 1 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the processor is further configured to identify the occurrence of the channel change event based on a difference between a frequency pattern of the audio signal before the mute interval and a frequency pattern of the audio signal after the mute interval being greater than a preset threshold value.

8. The electronic apparatus as claimed in claim 1 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the processor is further configured to identify the occurrence of the channel change event based on a difference between a phase of the audio signal before the mute interval and a phase of the audio signal after the mute interval being greater than a preset threshold value.

9. The electronic apparatus as claimed in claim 1 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the processor is further configured to:

based on the audio signals before and after the mute interval being identified to be discontinuous, compare first fingerprint obtained from an image signal before the mute interval with second fingerprint obtained from an image signal after the mute interval, and

based on images before and after the mute interval being identified to be discontinuous according to comparison between the first fingerprint and the second fingerprint, identify the occurrence of the channel change event.

10. A method for controlling an electronic apparatus, the method comprising:

displaying an image corresponding to a content;

based on a mute interval being detected by analyzing an input signal corresponding to the content, comparing a signal of the input signal before the mute interval with a signal of the input signal after the mute interval, and identifying whether a first signal of the input signal before the mute interval and a second signal of the input signal after the mute interval are continuous by comparing a feature of the first signal with a feature of the second signal; and

based on identifying that the first signal and the second signal is not continuous, identifying an occurrence of a channel change event in which the content is changed to another content.

11. The method as claimed in claim 10 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the method further comprises:

performing an image capturing operation from a beginning of the mute interval; and

based on the occurrence of the channel change event being identified, analyzing an image captured by the image capturing operation and obtaining information on a changed channel.

12. The method as claimed in claim 11 , wherein the obtaining of the information on the changed channel comprises identifying a channel change message from the image captured by the image capturing operation, and obtaining the information on the changed channel from the channel change message.

13. The method as claimed in claim 12 , wherein the obtaining of the information on the changed channel comprises acquiring texts included in the channel change message through optical character recognition (OCR) and scene text recognition (STR), and obtaining the information on the changed channel based on the acquired texts.

14. The method as claimed in claim 11 , wherein the identifying of the occurrence of the channel change event comprises identifying the occurrence of the channel change event based on the audio signals before and after the mute interval being identified to be discontinuous, and a channel change message being included in the image captured by the image capturing operation.

15. The method as claimed in claim 11 , further comprising:

terminating the image capturing operation based on the audio signals before and after the mute interval being identified to be continuous.

16. The method as claimed in claim 10 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the identifying of the occurrence of the channel change event comprises identifying the occurrence of the channel change event based on a difference between a frequency pattern of the audio signal before the mute interval and a frequency pattern of the audio signal after the mute interval being greater than a preset threshold value.

17. The method as claimed in claim 10 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the identifying of the occurrence of the channel change event comprises identifying the occurrence of the channel change event based on a difference between a phase of the audio signal before the mute interval and a phase of the audio signal after the mute interval being greater than a preset threshold value.

18. The method as claimed in claim 10 , wherein the first signal before the mute interval includes an audio signal, and the second signal after the mute interval includes an audio signal, and

wherein the identifying of the occurrence of the channel change event comprises:

based on the audio signals before and after the mute interval being identified to be discontinuous, comparing first fingerprint obtained from an image signal before the mute interval with second fingerprint obtained from an image signal after the mute interval, and

based on images before and after the mute interval being identified to be discontinuous according to comparison between the first fingerprint and the second fingerprint, identifying the occurrence of the channel change event.

19. The electronic apparatus of claim 1 , wherein the channel change event comprises displaying a black screen on the display.

20. The electronic apparatus of claim 1 , wherein the processor is further configured to, obtain time information regarding a black screen in the content, the time information including at least one of information regarding a start time of the black screen, information regarding an end time of the black screen or information regarding a duration of the black screen.