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Video code stream receiving, sending and retransmission method and equipment

A transmission method and code stream technology are applied in the application field of video code stream splittable transmission technology in mobile TV, which can solve the problem of lack of elaboration and achieve the effect of relieving pressure.

Active Publication Date: 2009-09-30
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
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Problems solved by technology

In addition, none of them explained how to mark, identify and transmit these splittable code streams in practical applications

Method used

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  • Video code stream receiving, sending and retransmission method and equipment
  • Video code stream receiving, sending and retransmission method and equipment
  • Video code stream receiving, sending and retransmission method and equipment

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Embodiment Construction

[0058] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0059] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0060] The principle of the present invention will be described first. The purpose of the present invention is to support the pre-identification and marking of the split video code stream. The specific method is to use the Network Adaptation Layer (Network Adaptation Layer, referred to as "NAL") and add fields in its reserved fields to support the...

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Abstract

The invention relates to a mobilephone-television transport protocol, in particular to a video code stream receiving, sending and retransmission method and equipment in a mobile cellular network. A network adaptation layer of a video data package is provided with a priority level mark, a dependency mark and a type mark, thus the equipment can conveniently extract video subcode streams with the characteristics, such as space domains, time domains, SNR, ROI quality, error resistant codes, and the like with different levels from the sending end of a mobile core network and send the video subcode streams to a mobilephone terminal; and in addition, the priority level mark, the dependency mark and the type mark are arranged at a prepared field section of the network adaptation layer, thus the equipment can be compatible to standard equipment which can not support the priority level mark, the dependency mark and the type mark.

Description

technical field [0001] The invention relates to a mobile phone TV transmission protocol, in particular to the application of video code stream detachable transmission technology in mobile phone TV. Background technique [0002] In wireless cellular applications such as mobile TV (including 2G, 2.5G, 3G, etc.), based on the characteristics of wireless networks, it is necessary to adjust the video transmission data rate in time according to the signal quality of the wireless channel to adapt to the current channel bandwidth. Maximize video transmission and reception quality over wireless cellular networks. [0003] However, existing mobile phone video code stream transmission schemes all regard a video frame as an access unit. The problem caused by this is that the video code stream can only be transmitted at a predetermined encoding rate, and the bandwidth of different wireless cellular networks may be different, and the actual available bandwidth often changes with time. I...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N19/30H04N19/37H04N19/70
Inventor 丁亚强武晓阳林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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