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A Serial Differential Non-Return-to-Zero Code Recognition Method

An identification method and return-to-zero code technology, applied in the field of serial code identification, can solve the problems of synchronization and identification processing errors, cumbersome control, etc.

Active Publication Date: 2021-09-14
成都夸克光电技术有限公司
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  • Abstract
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  • Claims
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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

Method used

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  • A Serial Differential Non-Return-to-Zero Code Recognition Method
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  • A Serial Differential Non-Return-to-Zero Code Recognition Method

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Embodiment Construction

[0026] The following description in conjunction with the accompanying drawings of specific embodiments of the present invention will be further described in detail.

[0027] The present invention contemplates a differential NRZ serial identification method, the actual application, such as figure 2 , The differential NRZ serial two corresponding differential signal, the differential signal level A is 1,0, B 0,0 differential signal level representing the current bit is 1; A differential signal 0,0-level, the differential signal level B 1,0, representing the current bit is 0. The differential NRZ serial identification method, according to figure 1 , The method comprising the steps of specifically identified.

[0028] Step A. For two differential NRZ serial differential signal corresponding to, or logical operation, such as image 3 Shown, a signal S, and then proceeds to step B.

[0029] B. the step of acquiring a signal S for each falling edge position and the falling position of eac...

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Abstract

The invention relates to a serial differential non-return-to-zero code identification method. Based on the logical or non-operational results of two differential signals corresponding to the serial differential non-return-to-zero code, a new identification method is designed, and each falling edge position of the result is used as Each start mark position, combined with the preset n times of the serial differential non-return-to-zero code frequency, as the clock frequency, samples the two differential signals separately, and then decodes to obtain the data corresponding to the serial differential non-return-to-zero code Value, so using the sampling judgment and storage of the digital circuit, the identification of the serial differential non-return-to-zero code can be realized, the control logic is simple and effective; and the entire identification method is stable and reliable, with small errors. , it only needs a simple falling edge judgment to correctly identify the code value and output the correct data. It has the characteristics of stable and reliable performance and small recognition error.

Description

Technical field [0001] The present invention relates to a serial differential NRZ identification method, belonging to the serial code identification technology. Background technique [0002] Serial differential NRZ applications in residential and commercial areas around the world is very extensive, and in turn signal the system most widely used serial number, serial differential NRZ traditional means of identification, and in sync the identification process often lead to large errors, and the control is more complicated. Inventive content [0003] The present invention solves the technical problem is to provide a differential NRZ serial identification method can be realized between the external device and the application system, a high accuracy of identification serial differential NRZ code. [0004] In order to solve the above problems by the following technical scheme: The present invention designs a serial differential NRZ recognition method, comprising the steps of: [0005]...

Claims

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Application Information

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Patent Type & Authority Patents(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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