IMAGE DISPLAY APPARATUS, MOBILE TERMINAL AND METHOD FOR OPERATING THE SAME

• US 20130330053A1
• Filed: 03/15/2013
• Published: 12/12/2013
• Est. Priority Date: 06/08/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Seokhee, HWANG, Sunjung, JEONG, Youngho, LEE, Myonggu, SHIN, Sungho, HONG, Seongpyo
• Granted Patent: US 9,398,344 B2
• Time in Patent Office: Days
• US Class Current: 386/201
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/4852 for modifying audio parameters, e.g. switching between mono and stereo
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 21/8113 comprising music, e.g. song in MP3 format

Abstract

An image display apparatus, a mobile terminal and a method for operating the same are discussed. The method for operating the image display apparatus includes entering a wireless audio transmission mode, performing synchronization with a mobile terminal using a first wireless communication method, extracting audio data from multimedia data, and transmitting the extracted audio data to the mobile terminal using a second wireless communication method different from the first wireless communication method. By this configuration, it is possible to improve user convenience.

Claims

1. A method for operating an image display apparatus, the method comprising:

entering a wireless audio transmission mode;

performing synchronization with a mobile terminal using a first wireless communication method;

extracting audio data from multimedia data; and

transmitting the extracted audio data to the mobile terminal using a second wireless communication method different from the first wireless communication method.

2. The method according to claim 1, wherein the performing of the synchronization includes:

receiving control data from the mobile terminal using the first wireless communication method; and

transmitting feedback data corresponding to the control data to the mobile terminal using the first wireless communication method.

3. The method according to claim 2, wherein:

the control data includes at least one of wireless audio transmission mode start information or end information, wireless channel setting request information, wireless channel change request information, allocated wireless channel information, decoding information, wireless channel environment information and playback delay information, and

the feedback data includes at least one of information about the number of channels of audio data to be transmitted, encoding state information, encoding scheme information, playback point-of-time information and current time information.

4. The method according to claim 1, further comprising transmitting at least one of playback point-of-time information of the audio data and current time information to the mobile terminal using the first wireless communication method during transmission of the audio data.

5. The method according to claim 1, wherein the first wireless communication method is a two-way communication method and the second wireless communication method is a one-way communication method.

6. A method for operating a mobile terminal, the method comprising:

performing synchronization with an image display apparatus using a first wireless communication method according to a wireless audio transmission mode;

receiving audio data from the image display apparatus using a second wireless communication method different from the first wireless communication method; and

playing back the received audio data.

7. An image display apparatus comprising:

a display;

a network interface configured to exchange data with a mobile terminal; and

a controller configured to perform synchronization with the mobile terminal using a first wireless communication method according to a wireless audio transmission mode, to extract audio data from multimedia data, and to transmit the extracted audio data to the mobile terminal using a second wireless communication method different from the first wireless communication method.

8. A mobile terminal comprising:

an audio output module configured to output an audio signal to be played back;

a wireless communication unit configured to exchange data with an image display apparatus; and

a controller configured to perform synchronization with the image display apparatus using a first wireless communication method according to a wireless audio transmission mode and to play back audio data received from the image display apparatus using a second wireless communication method different from the first wireless communication method.

9. A method for operating an image display apparatus, the method comprising:

receiving a wireless audio transmission mode entrance signal from a mobile terminal;

transmitting information about audio data to be transmitted to the mobile terminal;

receiving decoding information from the mobile terminal;

transmitting audio data of an encoding state corresponding to the decoding information; and

playing back multimedia data associated with the audio data.

10. The method according to claim 9, wherein the information about the audio data includes at least one of information about the number of channels, encoding state information, encoding scheme information, playback point-of-time information and current time information of the audio data to be transmitted.

11. The method according to claim 9, wherein the transmitting of the audio data includes:

transmitting audio data demultiplexed from the multimedia data and not decoded if the decoding information indicates that the audio data can be decoded; and

transmitting the audio data demultiplexed from the multimedia data and decoded if the decoding information indicates that the audio data cannot be decoded.

12. The method according to claim 9, wherein the multimedia data playback is synchronized with audio data playback of the mobile terminal.

13. The method according to claim 9, wherein:

the reception of the wireless audio transmission mode entrance signal, the transmission of the information about the audio data and the reception of the decoding information are performed based on a first wireless communication method, and

the transmission of the audio data is performed based on a second wireless communication method different from the first wireless communication method.

14. The method according to claim 9, further comprising receiving wireless channel environment information between the mobile terminal and the image display apparatus or playback delay information of the mobile terminal.

15. The method according to claim 14, further comprising at least one of:

based on the wireless channel environment information or the playback delay information,

changing the number of channels of the transmitted audio data;

delaying a playback time of the multimedia data; and

changing an encoding state of the audio data to be transmitted.

16. A method for operating an image display apparatus, the method comprising:

transmitting audio data of multimedia data to a mobile terminal;

playing back the multimedia data;

receiving wireless channel environment information between the mobile terminal and the image display apparatus or playback delay information of the mobile terminal during the multimedia data playback; and

performing signal processing such that the multimedia data playback is synchronized with audio data playback of the mobile terminal based on the wireless channel environment information or the playback delay information.

17. The method according to claim 16, wherein the performing signal processing includes at least one of:

based on the wireless channel environment information or the playback delay information,

changing the number of channels of the audio data to be transmitted;

delaying a playback time of the multimedia data; and

changing an encoding state of the audio data to be transmitted.

18. The method according to claim 16, wherein:

the reception of the playback delay information is performed based on a first wireless communication method, and

the transmission of the audio data is performed based on a second wireless communication method different from the first wireless communication method.

19. A method for operating a mobile terminal, the method comprising:

transmitting a wireless audio transmission mode entrance signal to an image display apparatus;

receiving information about audio data to be transmitted from the image display apparatus;

transmitting decoding information indicating whether audio data to be received can be decoded to the image display apparatus based on information about the audio data;

receiving audio data of an encoding state corresponding to the decoding information from the image display apparatus; and

playing back the received audio data.

20. The method according to claim 19, wherein the receiving the audio data of the encoding state corresponding to the decoding information includes:

receiving audio data demultiplexed from the multimedia data and not decoded if the decoding information indicates that the audio data can be decoded; and

receiving audio data demultiplexed from the multimedia data and decoded if the decoding information indicates that the audio data cannot be decoded.

21. A method for operating a mobile terminal, the method comprising:

receiving audio data from an image display apparatus;

calculating playback delay information of the audio data;

playing back the audio data;

transmitting wireless channel environment information between the mobile terminal and the image display apparatus or the playback delay information to the image display apparatus;

receiving audio data corresponding to the wireless channel environment information or the playback delay information; and

playing back the audio data corresponding to the wireless channel environment information or the playback delay information.

22. The method according to claim 21, further comprising transmitting, to the image display apparatus, at least one of a request for changing the number of channels of the audio data transmitted by the image display apparatus, a request for delaying a playback time of multimedia data played backed by the image display apparatus and a request for changing an encoding state of the transmitted audio data, based on the wireless channel environment information between the mobile terminal and the image display apparatus or the playback delay information.

23. An image display apparatus comprising:

a display;

a network interface configured to exchange data with a mobile terminal; and

a controller configured to transmit information about audio data to be transmitted to the mobile terminal if a wireless audio transmission mode entrance signal is received from the mobile terminal, to transmit audio data of an encoding state corresponding to decoding information if the decoding information is received from the mobile terminal, and to play back multimedia data associated with the audio data.

24. The image display apparatus according to claim 23, wherein, if wireless channel environment information between the mobile terminal and the image display apparatus or playback delay information of the mobile terminal is received during multimedia data playback, the controller performs signal processing such that the multimedia data playback is synchronized with audio data playback of the mobile terminal based on the wireless channel environment information or the playback delay information.

25. The image display apparatus according to claim 24, wherein the controller performs at least one of an operation for changing the number of channels of the audio data to be transmitted, an operation for delaying a playback time of the multimedia data and an operation for changing an encoding state of the audio data to be transmitted.

26. A mobile terminal comprising:

an audio output module configured to output an audio signal to be played back;

a wireless communication unit configured to exchange data with an image display apparatus; and

a controller configured to transmit a wireless audio transmission mode entrance signal to the image display apparatus, to transmit decoding information indicating whether audio data to be received can be decoded to the image display apparatus based on information about audio data if the information about the audio data is received from the image display apparatus, and to play back the received audio data if audio data of an encoding state corresponding to the decoding information is received from the image display apparatus.

27. The mobile terminal according to claim 26, wherein the controller calculates playback delay information of the audio data, transmits wireless channel environment information between the mobile terminal and the image display apparatus or the playback delay information to the image display apparatus, and plays back the audio data if the audio data corresponding to the wireless channel environment information or the playback delay information is received.