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Synchronization parameter transmission method, device and equipment of AVDTP protocol

A technology for synchronizing parameters and transmission methods, which is applied to electrical components, speaker distribution signals, signal processing, etc., and can solve problems such as increased pressure on data processing and data transmission

Inactive Publication Date: 2017-08-11
BUILDWIN SEMICON SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a synchronization parameter transmission method, device and equipment of the AVDTP protocol, aiming to solve the problem of increased pressure on data processing and data transmission due to the increased synchronization clock of each data packet in the existing primary and secondary Bluetooth earphones

Method used

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  • Synchronization parameter transmission method, device and equipment of AVDTP protocol
  • Synchronization parameter transmission method, device and equipment of AVDTP protocol
  • Synchronization parameter transmission method, device and equipment of AVDTP protocol

Examples

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Embodiment 1

[0038] figure 1 A specific structural block diagram of the synchronization parameter transmission system of the AVDTP protocol provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown. In this embodiment, the synchronization parameter transmission system of the AVDTP protocol includes a data output device 11, a master Bluetooth device 12 and at least one slave Bluetooth device 13, the master Bluetooth device 12 and the slave Bluetooth device 13 can be exactly the same Bluetooth device, only the data output The device 11 communicates with the master Bluetooth device 12, and the master Bluetooth device 12 communicates with all slave Bluetooth devices 13. The master Bluetooth device 12 forwards the source data of the data output device 11 to at least one slave Bluetooth device through a Bluetooth communication module in the form of a Bluetooth broadcast. Bluetooth de...

Embodiment 2

[0042] Figure 4 The implementation flow of the synchronization parameter transmission method of the AVDTP protocol provided by the second embodiment of the present invention is shown, and the details are as follows:

[0043] In step S401, during the bluetooth communication process, receive an AVDTP data packet from the data output device, the AVDTP data packet includes an audio and video data packet, and the audio and video data packet includes a packet header and an audio data packet.

[0044] In this example, if figure 2As shown, the specific structure of the AVDTP data packet includes an audio and video data packet, and the audio and video data packet includes a header part and an audio data packet (SBC packet).

[0045] In step S402, the reference clock of the local Bluetooth is obtained as a synchronization parameter.

[0046] In this embodiment, the reference clock is a clock with a unit of us.

[0047] In step S403, the time stamp included in the packet header is r...

Embodiment 3

[0055] Figure 5 A specific structural block diagram of an AVDTP protocol synchronization parameter transmission device provided by Embodiment 2 of the present invention is shown. For convenience of description, only parts related to the embodiment of the present invention are shown. In this embodiment, the synchronization parameter transmission device of the AVDTP protocol includes: a data receiving unit 51, a parameter acquiring unit 52, a parameter replacing unit 53, a data sending unit 54, a parameter waiting unit and a data playing unit.

[0056] Wherein, the data receiving unit 51 is used for receiving the AVDTP data packet from the data output device during the bluetooth communication process, the AVDTP data packet includes an audio and video data packet, and the audio and video data packet includes a header part and an audio data packet;

[0057] Parameter obtaining unit 52, is used for obtaining the reference clock of local bluetooth as synchronization parameter;

[...

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Abstract

The invention is applicable to the technical field of Bluetooth communication, and provides a synchronization parameter transmission method, a synchronization parameter transmission device and synchronization parameter transmission equipment of an AVDTP protocol. The method comprises the steps of receiving an AVDTP data packet from data output equipment during a Bluetooth communication process, wherein the AVDTP data packet comprises an audio / video data packet, and the audio / video data packet comprises a packet header part and an audio data packet; acquiring a reference clock of a local Bluetooth to serve as a synchronization parameter; replacing a timestamp included in the packet header part into the synchronization parameter; and forwarding the replaced AVDTP data packet. According to the method, the device and the equipment provided by the invention, the main Bluetooth equipment only uses the synchronization parameter to replace the timestamp in the original data packet without changing the format and length of existing Bluetooth data, the workload of data transmission is not increased, the transmission of the synchronization parameter is completed, and thus audio is synchronized.

Description

technical field [0001] The invention belongs to the technical field of bluetooth communication, and in particular relates to an AVDTP protocol synchronization parameter transmission method, device and equipment. Background technique [0002] Bluetooth headsets are widely used due to their mature technology, large transmission capacity, low radiation, free and convenient wireless use, and portability. In particular, the emergence of primary and secondary Bluetooth headsets makes the application of Bluetooth headsets not limited to single-person use scenarios, but can be extended to multiple simultaneous use scenarios. [0003] During the playback of the existing primary and secondary Bluetooth headsets, the music played by the primary headset needs to be synchronized with the music played by the secondary headset. If there is no audio synchronization, there will be a delay in the sound heard by the main earphone and the secondary earphone. According to the Haas effect, some...

Claims

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Application Information

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IPC IPC(8): H04R3/12
CPCH04R3/12H04R2430/00
Inventor 符运河
Owner BUILDWIN SEMICON SHENZHEN CO LTD
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