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
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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
Description
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Application Information
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