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Method and device for improving TS (transport stream) sorting ability

A capability and sequence number technology, applied in the field of improving the TS stream sorting capability, can solve the problems of increasing the equipment burden, reducing the network utilization rate, and unable to perform the sorting correctly, and achieving the effect of improving the sorting capability

Active Publication Date: 2014-03-26
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the serial number in RTP has 16 bits, basically there will be no problem of treating lost packets as non-lost packets, and even if they are out of order, they cannot be sorted correctly.
[0004] Video monitoring traffic is generally more, adding an extra layer of encapsulation (RTP encapsulation) will increase the burden on the device and reduce the utilization of the network

Method used

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  • Method and device for improving TS (transport stream) sorting ability
  • Method and device for improving TS (transport stream) sorting ability
  • Method and device for improving TS (transport stream) sorting ability

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Embodiment Construction

[0019] Aiming at the problems mentioned in the background technology, the present invention proposes a solution to enhance the out-of-sequence packet loss processing capability of a decoding device without adding a packet header. The scheme of the present invention is described in detail below through specific embodiments.

[0020] When the TS stream sender encapsulates the TS stream data packet, it uses two bits in the TOS field and four bits in the CC field to fill in the TS stream data packet sequence number; the TOS field is the IP header of the TS stream data packet. The TOS field, the two bits are reserved bits in the TOS field; the CC field is the CC field in the TS header.

[0021] Please refer to image 3 As shown in the IPv4 packet header, the IP packet header has a 1-byte TOS field. There are two reserved bits in the TOS field that can be used. The scheme of the present invention will use these two reserved bits to expand the range of sequence numbers of TS strea...

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PUM

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Abstract

The invention provides a method and a device for improving TS (transport stream) sorting ability. The method is applied to TS transporting-end equipment and includes filling two bits in a TOS (type of service) field into a TOS sequence number when a TS data packet is packaged; filling four bits in a CC (continuity count) field into a CC sequence number; combining the TOS sequence number with the CC sequence number to form a sequence number of the TS data packet. The TOS field is a TOS field in an IP (internet protocol) head of the TS data packet, and the two bits of the TOS field are reserved bits in the TOS field. The CC field is a CC field in a TS head. According to the scheme, the method and the device have the advantage that TS sorting and packet loss processing abilities can be improved on the basis that message encapsulation heads are not increased.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a method and a device for improving TS flow sorting ability. Background technique [0002] The video surveillance data can be encapsulated by TS stream; usually, in order to reduce the encapsulation overhead of the message, the TS packet is directly encapsulated on UDP, and then the IP header is encapsulated before being transmitted in the IP video surveillance network. Please refer to figure 1 Example message format. In the TS header of the TS packet, the Continuity count (hereinafter referred to as CC) field is a 4-bit field used to indicate the order of the packets. A TS packet (including TS header and TS payload) is 188 bytes, and the length of an IP packet usually does not exceed 1500 bytes, so an IP packet can encapsulate about 7 TS packets, and the CC field in each TS packet can be as follows: Fill sequentially. If the first IP packet contains 7 TS packets, the...

Claims

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Application Information

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IPC IPC(8): H04N21/6437H04N21/647H04N7/18
Inventor 周迪杜超华
Owner ZHEJIANG UNIVIEW TECH CO LTD
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