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Data caching method and data caching device

A data caching and caching technology, which is applied in the communication field, can solve problems such as small buffer area, inability to eliminate transmission jitter, and prolongation of PS data packet transmission, so as to eliminate transmission jitter, avoid too long output delay, and improve video playback effect Effect

Active Publication Date: 2019-03-01
CHENGDU TD TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 data caching device
  • Data caching method and data caching device
  • Data caching method and data caching 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 invention provide a data caching method and a data caching device. In the embodiments of the invention, the method comprises the following steps: when a PS packet currently receivedis an end PS packet of a target data frame, or the PS packet is an initial PS packet of the last data frame of the target data frame, determining whether all the PS packets of the target data frame have been received, wherein the last data frame of the target data frame is the last data frame of the target data frame; when the timekeeping time reaches a preset waiting time threshold and if all the PS packets of the target data frame have not been received, outputting the PS packets of the target data frame that have been received from a buffer area, so that a preset waiting time threshold canbe set for each data frame, the transmission jitter can be eliminated to a certain extent, and at the same time overlong output delay of the PS packets caused by overlong waiting time can be avoided,thereby improving 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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IPC IPC(8): H04N21/433H04L29/06H04N7/18
CPCH04N7/18H04N21/4331H04L65/764
Inventor 王争陈国斌方伟金红
Owner CHENGDU TD TECH LTD