Wireless audio system and method for wirelessly communicating audio information using the same

• US 10,341,758 B1
• Filed: 01/09/2019
• Issued: 07/02/2019
• Est. Priority Date: 11/29/2018
• Status: Active Grant

• Current Assignee: Bestechnic (Shanghai) Co., Ltd.
• Original Assignee: Bestechnic (Shanghai) Co., Ltd.
• Inventors: Tong, Weifeng, Zhang, Liang, Luo, Fei, Yang, Guanghui, Yang, Lei
• Primary Examiner(s): Mooney, James K
• Application Number:
  US16/244,056
• Time in Patent Office: 174 Days
• CPC Class Codes: G06F 3/162 Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
• CPC Class Codes: G06F 3/165 Management of the audio stream, e.g. setting of volume, audio stream path
• CPC Class Codes: H03M 13/00 Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes error detection or error correction for analogue/digital, digital/analogue or code conversion H03M1/00 – H03M11/00; specially adapted for digital computers G06F11/08; for information storage based on relative movement between record carrier and transducer G11B, e.g. G11B20/18; for static stores G11C
• CPC Class Codes: H04L 1/004 by using forward error control H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00
• CPC Class Codes: H04L 1/16 in which the return channel carries supervisory signals, e.g. repetition request signals
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/1041 Mechanical or electronic switches, or control elements switches in general H01H
• CPC Class Codes: H04R 1/1091 Details not provided for in groups H04R1/1008 - H04R1/1083
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 80/02 Data link layer protocols

Abstract

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first and a second wireless headphones. The first wireless headphone is configured to receive, from an audio source, audio information using a short-range wireless communication; in response to successfully receiving the audio information, generate an error correcting code based on the audio information; and transmit an error correcting message including the error correcting code. The second wireless headphone is configured to receive, from the audio source, the audio information using the short-range wireless communication; receive, from the first wireless headphone, the error correcting message including the error correcting code; and in response to successfully receiving the audio information based on the error correcting code, transmit an ACK message to the audio source. One of the first and second wireless headphones works in a snoop mode to communicate with the audio source based on communication parameters of another one of the first and second wireless headphones.

Claims

1. A wireless audio system, comprising:

a first wireless headphone configured to;

receive, from an audio source, audio information using a first type of short-range wireless communication;

in response to successfully receiving the audio information from the audio source, generate an error correcting code based on the audio information; and

transmit an error correcting message including the error correcting code without transmitting the audio information; and

a second wireless headphone configured to;

receive, only from the audio source, the audio information using the first type of short-range wireless communication;

receive, from the first wireless headphone, the error correcting message including the error correcting code; and

in response to successfully receiving the audio information from the audio source based on the error correcting code, transmit an acknowledgement (ACK) message to the audio source,

wherein one of the first and second wireless headphones works in a snoop mode to communicate with the audio source based on communication parameters of another one of the first and second wireless headphones.

2. The wireless audio system of claim 1, wherein the second wireless headphone is further configured to, in response to at least one of (i) not successfully receiving the audio information from the audio source, or (ii) not successfully receiving the error correcting message including the error correcting code from the first wireless headphone, transmit a negative acknowledgement (NACK) message to the audio source.

3. The wireless audio system of claim 1, wherein:

the first wireless headphone is further configured to, in response to not successfully receiving the audio information from the audio source, transmit a first NACK message to the audio source; and

the second wireless headphone is further configured to, in response to not successfully receiving the audio information from the audio source, transmit a second NACK message to the audio source.

4. The wireless audio system of claim 1, wherein:

the audio information includes a BLUETOOTH audio data packet; and

the error correcting code is generated by coding a payload of the BLUETOOTH audio data packet.

5. The wireless audio system of claim 4, wherein the error correcting message is transmitted based on a standard BLUETOOTH protocol in network layers above a physical layer.

6. The wireless audio system of claim 5, wherein the error correcting message is transmitted at a higher symbol rate than the standard BLUETOOTH protocol in the physical layer.

7. The wireless audio system of claim 1, wherein the first wireless headphone is further configured to, in response to not successfully receiving the audio information from the audio source, transmit a pseudo error correcting message without the error correcting code to the second wireless headphone.

8. The wireless audio system of claim 1, wherein the second wireless headphone is further configured to:

correct the audio information from the audio source based on the error correcting code; and

successfully receive the audio information after the correction.

9. The wireless audio system of claim 1, wherein the first wireless headphone is in the snoop mode, and the second wireless headphone is further configured to:

establish the first type of short-range wireless communication with the audio source; and

transmit, to the first wireless headphone, the communication parameters indicative of the first type of short-range wireless communication between the second wireless headphone and the audio source.

10. The wireless audio system of claim 1, wherein the second wireless headphone is in the snoop mode, and the first wireless headphone is further configured to:

establish the first type of short-range wireless communication with the audio source; and

transmit, to the second wireless headphone, the communication parameters indicative of the first type of short-range wireless communication between the first wireless headphone and the audio source.

11. The wireless audio system of claim 1, wherein the first and second wireless headphones are configured to be dynamically switched based on a signal quality of each of the first and second wireless headphones.

12. The wireless audio system of claim 1, wherein a signal quality of the first wireless headphone is better than a signal quality of the second wireless headphone.

13. The wireless audio system of claim 1, wherein a signal quality of the second wireless headphone is better than a signal quality of the first wireless headphone.

14. The wireless audio system of claim 1, wherein:

the first type of short-range wireless communication is based on a plurality of slots with a same duration;

the first wireless headphone is configured to receive at least part of the audio information and transmit the error correcting message in a same slot; and

the second wireless headphone is configured to transmit the ACK message in an immediately subsequent slot.

15. The wireless audio system of claim 1, wherein the first wireless headphone is configured to transmit the error correcting message to the second wireless headphone using a second type of short-range wireless communication different from the first type of short-range wireless communication.

16. The wireless audio system of claim 15, wherein the first type of short-range wireless communication is BLUETOOTH communication, and the second type of short-range wireless communication is WiFi communication or near-field magnetic induction (NFMI) communication.

17. A method for wirelessly communicating audio information, comprising:

receiving, by a first wireless headphone, audio information from an audio source using a first type of short-range wireless communication;

in response to successfully receiving the audio information from the audio source, generating, by the first wireless headphone, an error correcting code based on the audio information;

transmitting, by the first wireless headphone, an error correcting message including the error correcting code without transmitting the audio information;

receiving, by a second wireless headphone, the audio information only from the audio source using the first type of short-range wireless communication;

receiving, by the second wireless headphone, the error correcting message including the error correcting code from the first wireless headphone; and

in response to successfully receiving the audio information from the audio source based on the error correcting code, transmitting, by the second wireless headphone, an ACK message to the audio source.

18. The method of claim 17, further comprising:

establishing, by the first wireless headphone, the first type of short-range wireless communication with the audio source; and

transmitting, by the first wireless headphone, communication parameters indicative of the first type of short-range wireless communication to the second wireless headphone,

wherein receiving, by the second wireless headphone, the audio information comprises snooping, by the second wireless headphone, the audio information from the audio source based on the communication parameters.

19. The method of claim 17, further comprising:

establishing, by the second wireless headphone, the first type of short-range wireless communication with the audio source; and

transmitting, by the second wireless headphone, communication parameters indicative of the first type of short-range wireless communication to the first wireless headphone,

wherein receiving, by the first wireless headphone, the audio information comprises snooping, by the first wireless headphone, the audio information from the audio source based on the communication parameters.

20. The method of claim 17, wherein the error correcting message is transmitted to the second wireless headphone using a second type of short-range wireless communication different from the first type of short-range wireless communication.

21. The method of claim 20, wherein the first type of short-range wireless communication is BLUETOOTH communication, and the second type of short-range wireless communication is WiFi communication or NFMI communication.

22. A method for wirelessly communicating BLUETOOTH audio information, comprising:

receiving a BLUETOOTH audio data packet from an audio source using BLUETOOTH communication;

in response to successfully receiving the BLUETOOTH audio data packet from the audio source, generating an error correcting code by coding a payload of the BLUETOOTH audio data packet; and

transmitting, to a wireless headphone, an error correcting message including the error correcting code without transmitting the BLUETOOTH audio data packet.

23. The method of claim 22, further comprising, in response to not successfully receiving the BLUETOOTH audio data packet from the audio source, transmitting a NACK message to the audio source.

24. The method of claim 22, further comprising, in response to not successfully receiving the BLUETOOTH audio data packet from the audio source, transmitting a pseudo error correcting message without the error correcting code to the wireless headphone.

25. The method of claim 22, further comprising:

establishing the BLUETOOTH communication with the audio source; and

transmitting, to the wireless headphone, communication parameters indicative of the BLUETOOTH communication.

26. The method of claim 22, further comprising receiving, from the wireless headphone, communication parameters indicative of the BLUETOOTH communication,

wherein receiving the BLUETOOTH audio data packet comprises snooping the BLUETOOTH audio data packet from the audio source based on the communication parameters.

27. A method for wirelessly communicating BLUETOOTH audio information, comprising:

receiving a BLUETOOTH audio data packet only from an audio source using BLUETOOTH communication;

receiving, from a wireless headphone, an error correcting message including an error correcting code without receiving the BLUETOOTH audio data packet;

correcting the BLUETOOTH audio data packet from the audio source based on the error correcting code; and

in response to successfully receiving the BLUETOOTH audio data packet after the correction, transmitting an ACK message to the audio source.

28. The method of claim 27, further comprising, in response to at least one of (i) not successfully receiving the BLUETOOTH audio data packet after the correction, or (ii) not successfully receiving the error correcting message including the error correcting code from the wireless headphone, transmitting a NACK message to the audio source.

29. The method of claim 27, further comprising:

establishing the BLUETOOTH communication with the audio source; and

transmitting, to the wireless headphone, communication parameters indicative of the BLUETOOTH communication.

30. The method of claim 27, further comprising receiving, from the wireless headphone, communication parameters indicative of the BLUETOOTH communication,

wherein receiving the BLUETOOTH audio data packet comprises snooping the BLUETOOTH audio data packet from the audio source based on the communication parameters.

31. A wireless audio system, comprising:

a first wireless headphone configured to;

receive, from an audio source, audio information using a first type of short-range wireless communication;

in response to successfully receiving the audio information from the audio source, generate an error correcting code based on the audio information; and

transmit an error correcting message including the error correcting code; and

a second wireless headphone configured to;

receive, from the audio source, the audio information using the first type of short-range wireless communication;

receive, from the first wireless headphone, the error correcting message including the error correcting code; and

in response to successfully receiving the audio information from the audio source based on the error correcting code, transmit an acknowledgement (ACK) message to the audio source,

wherein one of the first and second wireless headphones works in a snoop mode to communicate with the audio source based on communication parameters of another one of the first and second wireless headphones,

the first type of short-range wireless communication is based on a plurality of slots with a same duration,

the first wireless headphone is configured to receive at least part of the audio information and transmit the error correcting message in a same slot, and

the second wireless headphone is configured to transmit the ACK message in an immediately subsequent slot.