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A data transmission method and device

A transmission method and data technology, applied in digital transmission systems, transmission systems, data exchange networks, etc., can solve problems such as broadcast storms, and achieve the effect of solving broadcast storms

Active Publication Date: 2019-04-30
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the NVR device in car 1 sends video data to the client through the port connected to the front of the car, and sends the video data to the client through the port connected to car 2, so that the video data from the IPC device in car 1 will be broadcast storm
Similarly, the video data of IPC devices in other cars will also generate broadcast storms

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

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Embodiment Construction

[0033]The terminology used in the present invention is for the purpose of describing specific embodiments only, not limiting the present invention. As used herein and in the claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present invention, first information may also be called second information, and similarly, second information may also be called first information. Depe...

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PUM

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Abstract

The invention provides a data transmission method and a data transmission device. The method comprises when receiving an address analysis message from other front-end devices via a first port, analyzing the MAC address of a source device and a hop count passed by the address analysis message from the address analysis message; maintaining MAC address entries by using the first port, the MAC address and the hop count; and when sending data to a target MAC address which is the MAC address, using the target MAC address to query the MAC address entries, and sending the data via the MAC address entries. According to the method and device provided by the invention, in a ring network of a video monitoring system, a complex ring network protocol is not needed, network devices such as a switch or a router are not needed to solve the problem of the ring network, and thus the broadcast storm problem in the ring network can be saved, and the optimal path is selected to transmit the data.

Description

technical field [0001] The invention relates to the technical field of monitoring, in particular to a data transmission method and device. Background technique [0002] In a video surveillance system, the figure 1 In the networking mode shown, each IPC (IP Camera, network camera) device is connected to an NVR (Network Video Recorder, network hard disk video recorder) device, and a linear connection is adopted between the NVR device and the NVR device, and the NVR device receives the IPC device The transmitted video data is stored, managed and other functions, so as to realize the advantages of distributed architecture brought by networking. For example, in a subway or high-speed rail train, when a NVR device and several IPC devices are placed in each train car, you can use figure 1 shown in the networking mode. [0003] In the above networking mode, assuming that a client is installed at the front of the vehicle, the client can access the video data of the IPC equipment i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721
CPCH04L45/66
Inventor 周迪王军
Owner ZHEJIANG UNIVIEW TECH CO LTD