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Video monitoring method and device for digital video recorder under low-bandwidth condition

A digital video and video monitoring technology, applied in TV, electrical components, image communication, etc., can solve problems such as frame loss, unsmooth picture, long-term pause, etc.

Active Publication Date: 2011-11-23
HANGZHOU HIKVISION DIGITAL TECH
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  • Abstract
  • Description
  • Claims
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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. Transmission technology bottlenecks such as unsmooth images and long pauses

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  • Video monitoring method and device for digital video recorder under low-bandwidth condition
  • Video monitoring method and device for digital video recorder under low-bandwidth condition
  • Video monitoring method and device for digital video recorder under low-bandwidth condition

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Embodiment Construction

[0024] 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.

[0025] 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.

[0026] The first embodiment of the present invention relates to a video monitoring method of a digital video recorder under low bandwidth conditions. Such as figure 1 As shown, the video monitoring method of the digital video recorder under low bandwidth conditions mainly includes the following steps:

[0027] First, a fixed ratio K between the ...

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Abstract

The invention relates to the field of video monitoring and discloses a video monitoring method and device for a digital video recorder under a low-bandwidth condition. In the invention, a fixed ratio is set for a transmission frame rate and an I frame interval, and an I frame is only transmitted when the linking number reaches a threshold, so that each link can be ensured to obtain at least one complete update image within an acceptable period of time under the low-bandwidth condition and even when the linking number is larger. When a control command of a client on amplifying a specified preview channel is received, other preview channels of the client are switched off, so that real-time smooth images can be seen on the client.

Description

technical field [0001] The invention relates to the field of video monitoring, in particular to the video monitoring technology of a digital video recorder in a low-bandwidth mode. 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 function of the program. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N7/26
Inventor 张超栾国良曹华东张小媛
Owner HANGZHOU HIKVISION DIGITAL TECH
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