METHOD AND SYSTEM FOR WIRELESS COMMUNICATION OF AUDIO IN WIRELESS NETWORKS

• US 20110069647A1
• Filed: 06/23/2010
• Published: 03/24/2011
• Est. Priority Date: 09/23/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hsu, Ju-Lan, Shao, Huai-Rong, Ngo, Chiu
• Granted Patent: US 8,345,681 B2
• Time in Patent Office: Days
• US Class Current: 370/310
• 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:

obtaining position information of audio packets within a High-Definition Multimedia Interface (HDMI) 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 obtaining position information of audio packets includes:

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

8. The method of claim 2 further comprising:

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

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

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.

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

a wireless audio source device including;

a parser module configured for obtaining position information of audio packets within a High-Definition Multimedia Interface (HDMI) frame; and

a control module configured for transmitting digital audio information including said position information to a data sink device via a wireless communication medium.

11. The system of claim 10, wherein the parser module is further configured for obtaining 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.

12. The system of claim 11, wherein the control module is further configured for including in each packet accurate position for the audio packet wirelessly transmitted from the data source device to the data sink device.

13. The system of claim 11, wherein the control module is further configured for including position estimation information for all the audio packets in an aggregated audio packet wirelessly transmitted from the source device to the sink device.

14. The system of claim 13, wherein the control module is further configured for 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 a data sink device over the wireless communication medium.

15. The system of claim 14, wherein the control module is further configured for estimating audio packet distribution pattern and including the estimated audio packet distribution in the aggregated packet.

16. The system of claim 15, wherein the estimated audio packet distribution pattern comprises line distance of two neighboring audio packets within the HDMI frame.

17. The system of claim 10 further comprising:

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

18. The system of claim 17, wherein the data sink device is further configured for reconstructing 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.

19. A wireless audio source device for wireless communication of audio information, comprising:

a parser module configured for obtaining position information of audio packets within a High-Definition Multimedia Interface (HDMI) frame; and

a control module configured for transmitting digital audio information including said position information to a data sink device via a wireless communication medium.

20. The wireless audio source device of claim 19, wherein the parser module is further configured for obtaining 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.

21. The wireless audio source device of claim 20, wherein the control module is further configured for including in each packet accurate position for the audio packet wirelessly transmitted from the data source device to the data sink device.

22. The wireless audio source device of claim 20, wherein the control module is further configured for including position estimation information for all the audio packets in an aggregated audio packet wirelessly transmitted from the source device to the sink device.

23. The wireless audio source device of claim 22, wherein the control module is further configured for 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 a data sink device over the wireless communication medium.

24. The wireless audio source device of claim 23, wherein the control module is further configured for estimating audio packet distribution pattern and including the estimated audio packet distribution in the aggregated packet.

25. The wireless audio source device of claim 24, wherein the estimated audio packet distribution pattern comprises line distance of two neighboring audio packets within the HDMI frame.