Multimedia device synchronous operation method and system

A technology for multimedia equipment and media equipment, applied in the directions of image communication, selective content distribution, electrical components, etc., can solve the problems of increased playback time error, increased network load, increased error, etc., to reduce network load and delay time. floating, accuracy-enhancing effect

Active Publication Date: 2014-10-01
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because the time delay of the network is not a constant value, when the amount of data transmitted in the network is large, the size of the delay time will fluctuate greatly, and the error of using this delay time to correct the playback time will also increase
In this way, it is necessary to send synchronization data packets more frequently between multimedia devices to correct the playback time, which in turn increases the load on the network and increases the synchronization error.

Method used

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  • Multimedia device synchronous operation method and system
  • Multimedia device synchronous operation method and system

Examples

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Embodiment 1

[0037] figure 1 The composition structure of the system for synchronous operation of multimedia devices provided by Embodiment 1 of the present invention is shown, and for the convenience of description, only parts related to this embodiment are shown.

[0038] Such as figure 1 As shown, the system includes at least three media devices, a source media device 1 for sending media data or operation instructions to other media devices, a target media device 2 for receiving media data or operation instructions sent by the source media device, and a It is a media device 3 that provides clock information.

[0039] It should be noted that the source media device 1, the target media device 2, and the media device 3 providing clock information are only relatively speaking, and a media device can be either a source media device or a target media device, and the media device It is determined by the function currently being performed. Specifically, when the media device intends to send ...

Embodiment 2

[0055] figure 2 The first implementation process of the method for synchronous operation of multimedia devices provided by Embodiment 2 of the present invention is shown, and the method includes:

[0056] In step S201, the source media device sends a to-be-executed data packet to the target media device; the to-be-executed data packet includes execution time information of the to-be-executed data packet.

[0057] In this embodiment, the source media device and the target media device are only relative terms, and a media device may be either a source media device or a target media device, which is determined by the function currently performed by the media device. Specifically, when the media device intends to send media data or operation instructions to other media devices, it is a source media device; when the media device receives media data or operation instructions sent by a source media device, it is a target media device.

[0058] Preferably, the execution time informa...

Embodiment 3

[0067] image 3 It shows the second implementation process of the method for synchronous operation of multimedia devices provided by Embodiment 3 of the present invention, which is applied to figure 1 In the system shown in the embodiment, the method includes:

[0068] In step S301, the source media device or the target media device obtains a standard time and an average network delay from a media device providing clock information for clock calibration.

[0069] In this embodiment, when the source media device or the target media device starts, it interacts with the media device providing clock information multiple times to obtain the standard time (that is, the time of the media device providing clock information), and calculates the average network time. delay. Add the standard time to the average network delay to obtain the calibration time value, and adjust its own clock to the calibration time value, thereby ensuring that the clocks of all media devices in the system a...

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Abstract

The invention is applicable to the technical field of media devices, and provides a multimedia device synchronous operation method and system. The method is applied to a media system which is composed of at least one source media device and at least one target media device. The method includes the steps that the source media device sends a data packet to be executed to the target media device, wherein the data packet to be executed includes execution time information of the data packet to be executed; the target media device receives the data packet to be executed so as to obtain the execution time information of the data packet to be executed; the source media device and the target media device synchronously execute the data packet to be executed according to the execution time information. By means of the method and system, floating of network loads and delayed time which are caused when the media devices exceedingly transmit the specific synchronous data packet during time synchronization can be effectively relieved, and therefore accuracy is enhanced when the media devices synchronously play media data or execute an operation instruction.

Description

technical field [0001] The invention belongs to the technical field of media equipment, and in particular relates to a method and system for synchronous operation of multimedia equipment. Background technique [0002] With the development of communication technology, many devices in life use the network for communication and interaction, such as intelligent multimedia systems. When communicating between multimedia devices, due to the uncertain factors in network transmission that will affect the network bandwidth, the network delay time generated by the sending and receiving of data packets is different, which affects the synchronous playback and synchronization between multimedia devices operate. To solve this problem, in the prior art, the time difference of data transmission between media devices, that is, the delay time, is basically calculated in real time by intermittently transmitting specific synchronization data packets between multimedia devices. When the multime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/24H04N21/242
Inventor 谭春宏
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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