Method and system for wireless communication of audio in wireless networks

• US 8,654,767 B2
• Filed: 11/29/2012
• Issued: 02/18/2014
• Est. Priority Date: 09/23/2009
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shao, Huai-Rong, Hsu, Ju-Lan, Ngo, Chiu
• Primary Examiner(s): Cho, Hong
• Application Number:
  US13/689,615
• Publication Number:
  US 20130088641A1
• Time in Patent Office: 446 Days
• Field of Search: 370/389, 370/394, 370/401, 370474-476, 370/509, 370/510
• US Class Current: 370/389
• CPC Class Codes: G09G 2370/12 Use of DVI or HDMI protocol in interfaces along the display data pipeline
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• 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
• CPC Class Codes: H04N 21/4302 Content synchronisation processes, e.g. decoder synchronisation
• CPC Class Codes: H04N 21/43072 of multiple content streams on the same device
• CPC Class Codes: H04N 21/4341 Demultiplexing of audio and video streams
• CPC Class Codes: H04N 21/43635 HDMI
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 7/083 with signal insertion during the vertical and the horizontal blanking interval , e.g. MAC data signals

Abstract

A method and system for audio transmission in a wireless communication system which transmits digital video and digital audio in High-Definition Multimedia Interface (HDMI) format. Position information of audio packets within the HDMI frame is obtained. Digital audio information including the position information is transmitted from a data source device to a data sink device via a wireless communication medium. At the data sink device, an HDMI frame is reconstructed by inserting received audio packets into horizontal and vertical blanking periods of the HDMI frame.

Claims

1. A method of communicating audio information, comprising:

determining horizontal and vertical position information of audio packets within a frame; and

transmitting digital audio information including said position information from a data source device to a data sink device via a wireless communication medium.

2. The method of claim 1, wherein determining said horizontal and vertical position information comprises determining horizontal and vertical position of a current data island including audio, within vertical and horizontal blanking areas in the frame.

3. The method of claim 2, wherein transmitting audio information further includes:

carrying in each audio packet accurate position for the audio packet wirelessly transmitted from the data source device to the data sink device.

4. The method of claim 2 wherein:

transmitting audio information further includes carrying position estimation information for all the audio packets in an aggregated audio packet wirelessly transmitted from the source device to the sink device.

5. The method of claim 4, wherein transmitting audio information further includes:

adding vertical and horizontal position information to each audio packet and aggregating multiple audio packets together utilizing a packetization process; and

transmitting the aggregated audio packets from the data source device to the data sink device over the wireless communication medium.

6. The method of claim 5 further comprising:

estimating audio packet distribution pattern; and

carrying the estimated audio packet distribution in the aggregated packet.

7. The method of claim 6, wherein the estimated audio packet distribution pattern comprises line distance of two neighboring audio packets within the frame.

8. The method of claim 2 further comprising:

at the data sink device, reconstructing a frame by inserting received audio packets into horizontal and vertical blanking periods of the frame.

9. The method of claim 8, wherein reconstructing a frame further comprises:

generating signals at three Transition Minimized Differential Signaling (TMDS) channels according to the horizontal and vertical positions, with audio packet header and horizontal and vertical blanking at channel 0, and audio data at channels 1 and 2.

10. The method of claim 2, wherein the data source device comprises a High-Definition Multimedia Interface (HDMI) transmitter.

11. A system for wireless communication of audio information, comprising:

a wireless audio source device including;

a control module that transmits digital audio information including horizontal and vertical position information determined from audio packets within a frame to a data sink device via a wireless communication medium.

12. The system of claim 11, further comprising:

a parser module that obtains the horizontal and vertical position information of audio packets within the frame.

13. The system of claim 12, wherein the parser module obtains the horizontal and vertical position information of audio packets by determining horizontal and vertical position of a current data island including audio, within vertical and horizontal blanking areas in the frame.

14. The system of claim 13, wherein the control module includes in each packet accurate position for the audio packet wirelessly transmitted from the data source device to the data sink device.

15. The system of claim 12, wherein the control module includes position estimation information for all the audio packets in an aggregated audio packet wirelessly transmitted from the source device to the sink device.

16. The system of claim 15, wherein the control module adds vertical and horizontal position information to each audio packet and aggregates multiple audio packets together utilizing a packetization process, and transmits the aggregated audio packets from the data source device to the data sink device over the wireless communication medium.

17. The system of claim 11, wherein the wireless audio source comprises a High-Definition Multimedia Interface (HDMI) device.

18. The system of claim 17 further comprising:

the data sink device comprising a reconstruction module that reconstructs an HDMI frame by inserting received audio packets into horizontal and vertical blanking periods of the HDMI frame.

19. The system of claim 18, wherein the data sink device reconstructs an HDMI frame by generating HDMI signals at three Transition Minimized Differential Signaling (TMDS) channels according to the horizontal and vertical positions, with audio packet header and horizontal and vertical blanking at channel 0, and audio data at channels 1 and 2.

20. A wireless transmitter comprising:

a control module that transmits digital audio information including horizontal and vertical position information determined from audio packets within a High-Definition Multimedia Interface (HDMI) frame.

21. The wireless transmitter of claim 20, further comprising:

a parser module that obtains the horizontal and vertical position information of audio packets, wherein the wireless transmitter comprises an HDMI transmitter.

22. The wireless transmitter of claim 21, wherein the parser module obtains the horizontal and vertical position information of audio packets by determining horizontal and vertical position of a current data island including audio, within vertical and horizontal blanking areas in the HDMI frame.

23. The wireless transmitter of claim 22, wherein the control module includes in each packet accurate position for the audio packet wirelessly transmitted from the wireless transmitter.

24. The wireless transmitter of claim 22, wherein the control module includes position estimation information for all the audio packets in an aggregated audio packet wirelessly transmitted from the wireless transmitter.

25. The wireless transmitter of claim 24, wherein the control module adds vertical and horizontal position information to each audio packet and aggregating multiple audio packets together utilizing a packetization process, and transmits the aggregated audio packets from the wireless transmitter to a data sink device over the wireless communication medium.

26. The wireless transmitter of claim 25, wherein the control module estimates audio packet distribution pattern and including the estimated audio packet distribution in the aggregated packet, wherein the estimated audio packet distribution pattern comprises line distance of two neighboring audio packets within the HDMI frame.

27. A wireless receiver comprising:

a receiver module that receives digital audio information including horizontal and vertical position information determined from audio packets within a High-Definition Multimedia Interface (HDMI) frame.

28. The wireless receiver of claim 27, wherein the receiver module obtains the horizontal and vertical position information of audio packets based on horizontal and vertical position of a current data island including audio, within vertical and horizontal blanking areas in the HDMI frame.

29. The wireless receiver of claim 28, wherein each packet includes accurate position for the audio packet wirelessly received by the wireless receiver.

30. A method of communicating audio information, comprising:

including horizontal and vertical position information within a High-Definition Multimedia Interface (HDMI) frame; and

wirelessly receiving digital audio information including the position information from a data source device.

31. The method of claim 30, further comprising obtaining the horizontal and vertical position information of audio packets within the HDMI frame, wherein the obtaining includes:

determining horizontal and vertical position of a current data island including audio, within vertical and horizontal blanking areas in the frame.

32. The method of claim 31, wherein each audio packet carries accurate position for the audio packet wirelessly received from the data source.

33. The method of claim 32 wherein:

receiving audio information further includes receiving position estimation information for all the audio packets carried in an aggregated audio packet that is wirelessly received from the source device.

34. The method of claim 33, wherein the received audio information further includes:

vertical and horizontal position information added to each audio packet and multiple audio packets aggregated together utilizing a packetization process; and

the aggregated audio packets are received from the data source device over a wireless communication medium.

35. The method of claim 33 further comprising:

reconstructing a frame by inserting received audio packets into horizontal and vertical blanking periods of the frame.

36. The method of claim 35, wherein reconstructing a frame further comprises:

generating signals at three Transition Minimized Differential Signaling (TMDS) channels according to the horizontal and vertical positions, with audio packet header and horizontal and vertical blanking at channel 0, and audio data at channels 1 and 2.

37. The method of claim 30, further comprising:

obtaining position information of audio packets within the frame.