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Data caching method and device

A data buffering and data packet technology, applied in the field of communication, can solve the problems of PS data packet transmission, such as prolonged transmission, small buffer area, inability to eliminate transmission jitter, etc., to avoid too long output delay, eliminate transmission jitter, and improve video playback. effect of effect

Active Publication Date: 2022-02-01
CHENGDU TD TECH LTD
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AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a data caching method and device to solve the problem of buffering received PS packets by setting a jitter buffer in the prior art to eliminate transmission jitter. The transmission delay of PS packets is too long due to the large buffer area, or the transmission jitter cannot be eliminated due to the small buffer area

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  • Data caching method and device
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Embodiment Construction

[0021] In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention. rather than all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] figure 1 It is a flowchart of a data caching method provided by an embodiment of the present invention. The embodiment of the present invention aims at caching the received PS packet by setting a jitter buffer in the prior art to eliminate transmission jitter. Since the size of the set buffer area is not set accurately, the PS data packet will be caused due to the buffer area bei...

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Abstract

Embodiments of the present invention provide a data caching method and device. In the embodiment of the present invention, when the currently received PS data packet is the end PS data packet of the target data frame, or the PS data packet is the initial PS data packet of the next data frame of the target data frame, it is determined whether the PS data packet has been received All PS packets of the target data frame; wherein the next data frame of the target data frame is the next data frame of the target data frame; when the timing time reaches the preset waiting time threshold, if the target data frame has not been received For all PS data packets, the received PS data packets of the target data frame are output from the buffer area, so that the preset waiting time threshold can be set for each data frame, which can eliminate transmission jitter to a certain extent, and at the same time It can avoid too long PS packet output delay due to too long waiting time, so as to improve the video playback effect as a whole.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a data caching method and device. Background technique [0002] When the real-time video surveillance system is connected to the third-party video surveillance platform through the video gateway, the third-party video surveillance platform will encapsulate each video frame into one or more than one program stream (Program Stream, referred to as PS) data packets, and each PS data The packet is sent to the video gateway through a real-time transport protocol (Real-time Transport Protocol, RTP for short). The video gateway needs to frame the PS data packets sent by the third-party video surveillance platform. [0003] Since RTP can realize the orderly transmission of encapsulated data packets, but does not guarantee the reliability of data transmission, problems such as transmission jitter and out-of-order are prone to occur during data packet tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/433H04L65/75H04N7/18
CPCH04N7/18H04N21/4331H04L65/764
Inventor 王争陈国斌方伟金红
Owner CHENGDU TD TECH LTD
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