Serial differential non-return-to-zero code identification method

An identification method and a return-to-zero code technology, applied in the field of serial code identification, can solve the problems of cumbersome control, synchronization and identification processing errors, etc., and achieve the effect of simple and effective control logic, small identification error, and solving the problem of misidentification.

Active Publication Date: 2019-09-20
成都夸克光电技术有限公司
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Problems solved by technology

[0002] The serial differential non-return-to-zero code is widely used in civil and commercial fields all over the world, and the signal of this system is the most widely used serial code. The traditional serial differential non-return-to-zero The processing of recognition often brings large errors, and the control is more cumbersome

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  • Serial differential non-return-to-zero code identification method
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  • Serial differential non-return-to-zero code identification method

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The present invention has designed a kind of serial differential non-return-to-zero code recognition method, among the practical application, such as figure 2 As shown, the serial differential non-return-to-zero code corresponds to two differential signals, wherein, when the differential signal A is 1, 0 level, and the differential signal B is 0, 0 level, it means that the current bit is 1; is 0, 0 level, and the differential signal B is 1, 0 level, which means that the current bit is 0. The serial differential non-return-to-zero code identification method, according to figure 1 As shown, the specific identification method includes the following steps.

[0028] Step A. For the two differential signals corresponding to the serial differential non-return-to-zero code, perform a logic or non-operation, such as i...

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Abstract

The invention relates to a serial differential non-return-to-zero code identification method. Based on the logic or non-operation results of two paths of differential signals corresponding to the serial differential non-return-to-zero code, a brand new identification method is designed, each falling edge position of the result is used as each starting mark position; combining with the preset n times of the serial differential non-return-to-zero code frequency and taking as a clock frequency, the two paths of differential signals are sampled respectively, then the data value corresponding to the serial differential non-return-to-zero code is obtained through decoding, and therefore by means of sampling judgment and storage of the digital circuit, identification of the serial differential non-return-to-zero code can be achieved, and control logic is simple and effective; the whole identification method is stable, reliable and small in error, code values can be correctly identified and correct data can be output only by simple falling edge judgment for each starting sign position for sampling, and the method has the characteristics of stable and reliable performance and small identification error.

Description

technical field [0001] The invention relates to a serial differential non-return-to-zero code recognition method, which belongs to the technical field of serial code recognition. Background technique [0002] The serial differential non-return-to-zero code is widely used in civil and commercial fields all over the world, and the signal of this system is the most widely used serial code. The traditional serial differential non-return-to-zero The recognition process often brings large errors, and the control is more cumbersome. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a serial differential non-return-to-zero code recognition method, which can realize high-accuracy serial differential non-return-to-zero code recognition between external equipment and an application system. [0004] The present invention adopts the following technical solutions in order to solve the above-mentioned technical problems: the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L7/00H04L25/49
CPCH04L7/0087H04L25/49
Inventor 林萍
Owner 成都夸克光电技术有限公司
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