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Ethernet service transmitting and receiving method and device capable of dynamically configuring bandwidth

A dynamic configuration and Ethernet technology, applied in the field of information transmission, can solve problems such as waste of wiring resources or fiber resources, large delay of video images, loss of image quality, etc., to avoid mutual influence, save wiring resources, save time and cost and The effect of human resource costs

Active Publication Date: 2014-03-05
ENC DATA SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the high-definition image is converted into an IP signal, due to the need to encapsulate and encode the data during transmission, there will be a large delay in the video image, and at the same time, the image quality will also be greatly lost.
In many occasions, high-definition HD-SDI signals and Ethernet services must be connected and transmitted at the same time, so if high-quality high-definition image transmission is to be ensured, different lines are required to carry these two completely different services. Great waste of wiring resources or fiber resources

Method used

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  • Ethernet service transmitting and receiving method and device capable of dynamically configuring bandwidth
  • Ethernet service transmitting and receiving method and device capable of dynamically configuring bandwidth
  • Ethernet service transmitting and receiving method and device capable of dynamically configuring bandwidth

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Embodiment Construction

[0046] The present invention will be further described in detail below in conjunction with the drawings.

[0047] Such as figure 1 Shown is a method for sending Ethernet services with dynamically configured bandwidth in Embodiment 1 of the present invention, and the method includes:

[0048] After the input HD-SDI high-definition image signal is equalized by the equalizer, it enters the high-speed Serdes channel of the FPGA; the serdes receiving module of the FPGA recovers the 20bit parallel data and the HD-SDI link clock according to the reference clock, and the 20bit parallel data enters HD-SDI protocol detection module, which detects the current image format and the quality of the input signal;

[0049] The input Ethernet service message enters the FRGA through the Ethernet switch chip or directly through the Ethernet physical port, and the Ethernet switch chip is connected to the FPGA through a gigabit port;

[0050] The MAC module of the FPGA receives the Ethernet service message...

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Abstract

The embodiment of the invention discloses an Ethernet service transmitting and receiving method and device capable of dynamically configuring a bandwidth, which are used for the field of information transmission; an Ethernet data frame is scrambled into a high-definition image HD-SDI signal after being encoded; the Ethernet service is enabled and decoded to seamlessly fuse two service data of a HD-SDI (High-Definition Serial Digital Interface) image signal and Ethernet data on an HD-SDI; without substantially affecting the image quality, the bandwidth is dynamically configured to transmit the Ethernet service data while the HD-SDI image signal is transmitted; meanwhile, absolute isolation is assured at two levels of the high-definition image signal and the Ethernet service data so that the mutual influence during transmission is avoided. Therefore, a large quantity of wiring resources, huge time cost and human resources cost are saved for related projects in the fields like broadcast television, security monitoring and the like.

Description

Technical field [0001] The invention relates to the field of information transmission, and in particular to a method for sending and receiving Ethernet services with dynamically configured bandwidth and a device for sending and receiving Ethernet services. Background technique [0002] HD-SDI (High Display-Serial Digital Interface) is a broadcast-level high-definition digital input and output interface. This interface has been successfully applied in the field of broadcast and television, and is now also widely used in high-definition video surveillance security Mass adoption in the field. HD-SDI uses two transmission rates of 1.485G and 2.97G, and can support up to 1920x108060Hz image transmission without delay. [0003] HD-SDI high-definition serial digital interface adopts coaxial cable, with BNC interface as the standard interface, and the effective transmission distance is 100 meters. It is currently the longest interface for transmitting high-definition images through cable,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04N19/00H04L47/76
Inventor 梁晓东田广梁龙飞
Owner ENC DATA SERVICE CO LTD
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