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Method and device for network time calibration

A timing and network technology, which is applied in the field of network timing methods and devices, can solve the problems of increased redundant data volume and short timing intervals, etc.

Active Publication Date: 2019-10-22
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the timing interval is relatively short, a lot of short-time timing data packets will be introduced into the network, resulting in an increase in the amount of redundant data in the network

Method used

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  • Method and device for network time calibration
  • Method and device for network time calibration
  • Method and device for network time calibration

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Embodiment Construction

[0093] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0094] In order to reduce the amount of redundant data in the network on the basis of ensuring the accuracy of device time, the embodiment of the present invention provides a method and device for network time calibration.

[0095] A network time calibration method provided by an embodiment of the present invention is firstly introduced below.

[0096] It should be noted that the execution subject of a kind of network time calibration method provided by the em...

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Abstract

An embodiment of the present invention provides a method and device for network time correction, wherein the network time correction method includes: when an adaptive time correction instruction is received, obtaining historical time correction data before the current moment; The total difference of historical time correction corresponding to the time point; according to the total difference of historical time correction corresponding to each historical time point of correction, the total difference of the current time correction at the current moment is obtained through the preset algorithm; the total difference of the current time correction The difference between the total difference between the historical time correction and the latest historical time correction time point in the historical time correction time point is determined as the current time correction time difference value; according to the current time correction time difference value, adjust the current time correction time difference time to complete this self-adaptive time adjustment. Through this solution, the amount of redundant data in the network can be reduced on the basis of ensuring the accuracy of the device time.

Description

technical field [0001] The invention relates to the technical field of network time correction, in particular to a method and device for network time correction. Background technique [0002] With the development of computer network technology and video technology, the time synchronization of computers or network cameras in the network plays an increasingly important role. [0003] In general, in network devices, such as computers or network cameras, the calculation of the device time is performed by the hardware crystal oscillator chip in the device, but due to factors such as manufacturing process, equipment cost, and hardware design, the hardware crystal oscillator chip in the device There will be a certain error in the operation, which has an important impact on the operation of the equipment. For example, for the linkage system of multiple network cameras, multiple network cameras monitor different locations in the same area. Can cause erroneous analysis of the video....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638G04F5/14H04J3/0667H04L65/40H04L7/0016
Inventor 徐森
Owner HANGZHOU HIKVISION DIGITAL TECH
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