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High-precision external serial clock compensation method

A technology of serial clock and compensation method, applied in the direction of time division multiplexing system, digital transmission system, electrical components, etc., can solve the problems of cumbersome control, large compensation error, etc., achieve low cost, solve cumbersome control, method simple effect

Inactive Publication Date: 2018-01-16
成都夸克光电技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Clock synchronization is widely used in civil and commercial fields all over the world, and the timing signal of this system is most widely used in serial codes. The traditional single-counter compensation method often brings large problems in the processing of clock reversal. Compensation error, and the control is more cumbersome

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  • High-precision external serial clock compensation method

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Embodiment Construction

[0016] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0017] Such as figure 1 As shown, a high-precision external serial clock compensation method mainly includes two parts: decoding compensation generated during serial time code decoding and transmission compensation generated during transmission between devices. The high-precision external serial clock compensation method Specifically include:

[0018] Step 1: Sampling and decoding and finding the punctual edge S, clearing counter 1 and restarting counting;

[0019] Step 2: Find the reference point P, take out the value of counter 1, clear counter 2, and start counting;

[0020] Step 3: before the end of the time code transmission, complete the decoding, legality verification, validity verification, and fault-tolerant control in advance; ...

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Abstract

The invention discloses a high-precision external serial clock compensation method, which relates to synchronous control on a system clock and a local clock between an external clock source and application system equipment. The method mainly comprises two parts of decoding compensation generated in the case of decoding of a serial time code and transmission compensation generated by transmission among equipment. According to the frame structure and the transmission features of an external clock serial time code, the method adopts a separate time code compensation mode, decoding delay compensation and transmission delay compensation with an application system are thus realized, and the purpose of achieving high synchronization with the clock source is further achieved.

Description

technical field [0001] The invention relates to the application field of time system synchronization, in particular to a high-precision external serial clock compensation method. Background technique [0002] Clock synchronization is widely used in civil and commercial fields all over the world, and the timing signal of this system is most widely used in serial codes. The traditional single-counter compensation method often brings large problems in the processing of clock reversal. Compensation error, and the control is more cumbersome. Contents of the invention [0003] The purpose of the present invention is to address the above problems, propose a high-precision external serial clock compensation method, realize the high-precision clock synchronization between the external serial clock source time and each application system, and completely solve the problem of calculating and decoding when the application system is decoding. The error caused by the clock reversal duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04J3/06
Inventor 张浩阳
Owner 成都夸克光电技术有限公司