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Digital video recorder (DVR) and network bandwidth control method thereof

A technology of digital video and network bandwidth, applied in the direction of TV, color TV, image communication, etc., can solve the problem of network jam and other problems, and achieve the effect of reducing bandwidth

Active Publication Date: 2014-11-19
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The inventors of the present invention have found that the remote monitoring function of the digital video recorder is due to factors such as the network environment and the network bandwidth limitation of the digital video recorder itself. If the remote monitoring is carried out according to the existing technology, transmission technology bottlenecks such as network jamming and congestion will easily occur. Adapting to any network bandwidth from narrowband to broadband, low latency and high quality, and supporting video services in the form of website services are key technical issues in the field of DVR technology today.

Method used

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  • Digital video recorder (DVR) and network bandwidth control method thereof
  • Digital video recorder (DVR) and network bandwidth control method thereof
  • Digital video recorder (DVR) and network bandwidth control method thereof

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Embodiment Construction

[0029] 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 embodiments, the technical solution required by each claim in this application can also be realized.

[0030] 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.

[0031] The invention relates to a digital video recorder.

[0032] figure 1 It is a schematic diagram of the system structure of the digital video recorder, and the digital video recorder includes:

[0033] Preview module, used to provide remote preview.

[0034] The playback download control module is used to control remote playback and remote download....

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Abstract

The invention relates to the field of video monitoring, and discloses a digital video recorder (DVR) and a network bandwidth control method thereof. In the invention, after receiving a remote playback or remote download request, the DVR closes all the existing remote previews so as to ensure normal remote playback or remote download in the case of lower total bandwidth; in the case of insufficient bandwidth, the earliest remote preview is deleted; and during the process of remote playback or remote download of the DVR, only an I-frame and an audio frequency frame are extracted and sent for all or part of program stream so as to further lower the demand of remote playback or remote download for the bandwidth.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to the network bandwidth control technology for remote preview, playback and download of digital video recorders. Background technique [0002] Digital Video Recorder (Digital Video Recorder, referred to as "DVR") is a high-tech product that combines computer technology, network technology, digital video technology, traditional video, and security technology. Disk, referred to as "DVD"), the replacement product of video tape recorder, can be applied to the fields of electric power remote monitoring, bank security monitoring, building intelligence, home anti-theft monitoring, etc., and has broad market prospects. The basic function of a digital video recorder is to convert analog audio and video signals into digital signals of the Moving Picture Experts Group (MPEG) and store them on a storage medium (such as a hard disk), and provide and record, play and manage The corresponding fun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N5/76H04L29/06
Inventor 张海明陈结合王建炜刘彦
Owner HANGZHOU HIKVISION DIGITAL TECH
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