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A clock synchronization method and device

A clock synchronization and pre-synchronization technology, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of inconsistent playback progress of multimedia playback devices, low synchronization of multimedia playback, etc., achieve good synchronous playback effect and improve synchronization sexual effect

Active Publication Date: 2019-10-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple multimedia playback devices play the same multimedia such as music, the above-mentioned slight time difference causes the playback progress of each multimedia playback device to be inconsistent, resulting in a relatively low synchronization of multimedia playback between multimedia playback devices

Method used

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  • A clock synchronization method and device
  • A clock synchronization method and device
  • A clock synchronization method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment will be described from the perspective of a clock synchronization device. Specifically, the clock synchronization device may be integrated into a control device such as a terminal, and the terminal may be a smart phone, a tablet computer, or the like.

[0039] A clock synchronization method, comprising: sending a media data packet to a playback device, then receiving a clock synchronization detection result sent by the playback device, judging whether the clock synchronization detection result meets a preset synchronization condition, and if so, sending the media data packet to the playback device A clock synchronization command, so that the playback device performs clock synchronization according to the clock synchronization command.

[0040] Such as figure 1 As shown, the clock synchronization method, the specific process may include:

[0041] 101. Send the media data packet to the playback device.

[0042] Specifically, the media data to be played m...

Embodiment 2

[0072] This embodiment will be described from the perspective of another clock synchronization device. Specifically, the clock synchronization device may be integrated into a playback device such as a terminal or a sound box. The terminal may be a smart phone, a tablet computer, or the like.

[0073] A clock synchronization method, comprising: receiving a media data packet sent by a control device, and obtaining the received number of the current media data packet, performing clock synchronization detection when the received number is greater than a preset threshold, obtaining a clock synchronization detection result, and using the clock The synchronization detection result is sent to the control device, the clock synchronization command sent by the control device according to the clock synchronization detection result is received, and the clock synchronization is performed according to the clock synchronization command.

[0074] Such as figure 2 As shown, the clock synchroni...

Embodiment 3

[0093] According to the clock synchronization methods described in Embodiments 1 and 2, an example will be given below for further detailed description.

[0094] In this embodiment, the clock synchronization device described in Embodiment 1 is integrated in the master device, and the clock synchronization device described in Embodiment 2 is integrated in the slave device as an example for detailed description.

[0095] refer to image 3 , this embodiment provides a multimedia playback system, including: a source device 10, a master device 20, and at least one slave device 30; the source device 10, the master device 20, and the slave device 30 can be connected to each other through a network.

[0096] Wherein, the main control device 20 is used to control the slave device, which can be a terminal, such as a mobile phone, a tablet computer, etc., and the main control device can also be a playback device, such as a playback device such as a speaker; this embodiment will use the m...

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Abstract

The embodiment of the invention provides a clock synchronization method and device. According to the embodiment of the invention, the method comprises the steps of sending media data packets to playing devices; receiving clock synchronization detection results sent by the playing devices; judging whether the clock synchronization detection results satisfy preset synchronization conditions or not; and if the clock synchronization detection results satisfy the preset synchronization conditions, sending clock synchronization commands to the playing devices, thereby enabling the playing devices to carry out clock synchronization according to the clock synchronization commands. According to the scheme, the multimedia playing synchronism among a plurality of multimedia playing devices can be improved.

Description

technical field [0001] The invention relates to the technical field of audio playback, in particular to a clock synchronization method and device. Background technique [0002] With the improvement of living standards, home audio-visual equipment plays an important role in people's lives. At present, it has been widely used to connect multiple multimedia playback devices (for example, speakers, players, etc.) and control devices to each other through a wired or wireless network to form a multimedia playback system, and to play the same multimedia such as music synchronously. [0003] In the above multimedia playing system, each multimedia playing device has an independent clock system. Each playback device plays multimedia according to its own clock system. However, the clock systems of various multimedia playback devices and reference devices (generally control devices) are not always synchronized. There may be slight time differences between playback devices and referen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/242H04N21/43
CPCH04N21/242H04N21/4305H04N21/4307
Inventor 谭春宏
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD