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Network device, time synchronization method and network system

A technology of network equipment and equipment, applied in the direction of time division multiplexing system, electrical components, multiplexing communication, etc., to achieve the effect of accurate system time

Inactive Publication Date: 2017-05-03
ACCTON TECHNOLOGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, it takes some time for the slave clock 120 to calculate the time offset TO

Method used

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  • Network device, time synchronization method and network system
  • Network device, time synchronization method and network system
  • Network device, time synchronization method and network system

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Embodiment Construction

[0025] The following will clearly illustrate the spirit of the present invention with the accompanying drawings and detailed descriptions. After any person with ordinary knowledge in the technical field understands the preferred embodiments of the present invention, he can change and modify it by the technology taught by the present invention. without departing from the spirit and scope of the present invention.

[0026] As used herein, the term "coupled" may refer to two or more elements that are in direct physical or electrical contact with each other, or indirect physical or electrical contact with each other, and "coupled" may also refer to two or more components that are in physical or electrical contact with each other. Components operate or act on each other.

[0027] figure 2 is a schematic diagram illustrating a network system 200 according to some embodiments of the present invention. The network system 200 includes a main clock device 110 , network devices 220 ( ...

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Abstract

The invention discloses a network device, time synchronization method and network system. The network device includes a communication unit and a processing unit. The communication unit is configured to perform a time synchronization process with a master clock device. The processing unit is coupled to the communication unit and is configured to control the communication unit to perform the time synchronization process for obtaining a time offset of the network device relative to the master clock device. The processing unit is further configured to calculate a processing time elapsed during the time synchronization process and obtain a correction time by calculating the system time of the network device, the time offset and the processing time. The network device, time synchronization method and network system can enable updated system time to be more precise. In addition, a synchronization pulse signal generated according to the network device, time synchronization method and network system can be transmitted to other communication devices, so that updated system time of the communication devices is more precise.

Description

technical field [0001] The invention refers to a network device capable of providing high time synchronization accuracy, a time synchronization method and a network system thereof. Background technique [0002] With the development of network technology, various network applications can be realized. For some network applications (such as automatic control, instrument measurement, real-time image monitoring, etc.), it requires high time synchronization accuracy. However, each node and terminal device in the network will be affected by the environment where it is located, resulting in different degrees of deviation of the oscillation frequency generated by it, resulting in a reduction in the synchronization accuracy of the system time of each network device. How to make each device in the network achieve precise system time synchronization is one of the goals that technicians in related fields are working on. [0003] figure 1 It is a schematic diagram illustrating the info...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0644H04J3/0667H04J3/0682H04J3/0697
Inventor 郑振昌
Owner ACCTON TECHNOLOGY CORPORATION
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