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Internet clock synchronizing device and method

A clock synchronization, Internet technology, applied in synchronization devices, data exchange networks, digital transmission systems, etc., can solve problems such as inability to ensure synchronization clocks, unstable transmission delay, fast time and slow time, and achieve unstable interference. The effect of reduction, cheaper production, and increased storage capacity

Inactive Publication Date: 2014-04-23
王知康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unstable transmission delay between devices on the Internet, which is fast and slow, it is impossible to ensure a stable synchronous clock between multiple devices connected to the Internet.

Method used

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  • Internet clock synchronizing device and method
  • Internet clock synchronizing device and method
  • Internet clock synchronizing device and method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0043] First, combine figure 2 and image 3 The first embodiment of the present invention will be described.

[0044] In order to suppress the instability of the transmission delay between Internet devices, so as to accurately synchronize the clocks between the devices connected to the Internet, every device on the Internet has figure 2 Clock synchronization device shown.

[0045] The clock synchronization device includes an interval cumulative averaging module 1, an interval comparison module 2, a voltage control clock generation module 3, and a clock feedback module 4. The interval cumulative averaging module 1 includes the cumulative averager AVG. The interval cumulative averaging module records the time of receiving IP packets this time each time the device receives an IP packet, and calculates the time of receiving IP packets this time and the last time. Receive the time interval of the IP packet, and transmit the interval to the cumulative averager AVG, the cumulative avera...

no. 2 example

[0056] Next, combine Figure 4 and Figure 5 The second embodiment of the present invention will be described.

[0057] Figure 4 Is a schematic diagram of an Internet clock synchronization device according to the second embodiment of the present invention, Figure 5 It is a schematic flow chart of the Internet clock synchronization method according to the second embodiment of the present invention.

[0058] Such as Figure 4 As shown, the interval cumulative average module 1 of the Internet clock synchronization device according to the second embodiment of the present invention, after obtaining the corresponding interval average TA, converts the interval average TA into the corresponding average reference clock FTA, and converts the The average reference clock FTA is output to the interval comparison module 2, and the interval comparison module 2 performs an adjustment accordingly. The interval comparison module 2 has an interval comparator CMP, and the interval comparator CMP c...

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Abstract

The invention relates to an internet clock synchronizing device and method. The device comprises an alternate accumulative average module (1), an alternate comparison module (2), a voltage control clock generation module (3) and a clock feedback module (4), wherein the alternate accumulative average module (1) accumulates and calculates alternate average values of a received IP packet; the alternate comparison module (2) compares output of the alternate accumulative average module (1) with output of the clock feedback module (4), and generates a corresponding voltage (CNTL) according to the comparison result; the clock feedback module (4) feeds back the output of the voltage control clock generation module (3); and the voltage control clock generation module (3) generates a corresponding clock according to the voltage (CNTL) generated by the alternate comparison module (2), so that the clock output by the voltage control clock generation module (3) is locked on the clock corresponding to the alternate average value.

Description

Technical field [0001] The present invention relates to an Internet clock synchronization device and method, more specifically, to a distributed Internet accurate clock synchronization device and method. Background technique [0002] At present, with the rapid development of the Internet, the Internet has carried more and more applications, which have been widely used in various fields such as industry, commerce, life, learning, and government offices. Since the Internet uses IP packaging to communicate with each other, and the transmission path of each packet may be different, the duration of IP may be different. Therefore, the Internet has very loose requirements for time synchronization between users, which makes the Internet The construction of the network is relatively cheap and simple. [0003] Since the Internet has low requirements for time synchronization, the existing traditional telephone system networks and mobile phone system networks that require precise synchronizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00H04L12/70
Inventor 王知康
Owner 王知康