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Method and device for decoding signal flipping code

A signal and signal receiving technology, applied in the field of encoding and decoding, can solve the problems of high equipment cost and cumbersome algorithm, and achieve the effect of solving the relatively cumbersome algorithm

Inactive Publication Date: 2020-05-12
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology

Although the CMI codec technology has become more and more mature, there are still problems such as relatively cumbersome algorithms and high equipment costs in the current implementation methods.

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  • Method and device for decoding signal flipping code
  • Method and device for decoding signal flipping code
  • Method and device for decoding signal flipping code

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Embodiment Construction

[0055] While the invention may be embodied in various forms, some exemplary and non-limiting embodiments are shown in the drawings and will be described below, it should be understood that the disclosure is to be considered as an example of the invention and not It is intended that the invention be limited to the specific embodiments described.

[0056] In the description of the embodiments of the present invention below, it should be noted that the numbers of the steps mentioned therein are only used for convenient and clear indication of the steps unless otherwise specified, and do not limit the sequence of the steps.

[0057] image 3 A schematic block diagram of an embodiment of a decoding method of a signal inversion code according to the present invention is shown. in such as image 3 In the illustrated embodiment, the method at least includes the following steps:

[0058] S1: receive signal flip code data;

[0059] S2: Recover the synchronous clock by tracking the d...

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Abstract

The invention relates to a method and a device for decoding a signal flipping code. The method comprises the following steps of: receiving signal flipping code data; according to the received signal flipping code data, recovering a synchronous clock in a data hopping edge tracking mode; detecting a falling edge of the signal flip code data by using a high-power clock, and setting a decoding unit every two bits by taking the detected first falling edge as a reference; and decoding the signal flip code data into non-return-to-zero code data according to a decoding unit, and outputting the non-return-to-zero code data based on a synchronous clock. According to the embodiment of the invention, the synchronous clock of the receiving end is recovered by utilizing the CMI code data, and the decoding unit is simply and conveniently defined through the detected falling edge of the CMI code data so as to decode the CMI code into the NRZ code, so that the problems of relatively tedious algorithm,dependence on equipment such as FPGA, higher cost and the like in the existing encoding and decoding mode are solved.

Description

technical field [0001] The present invention relates to the technical field of encoding and decoding. The present invention further relates to a decoding method and device for a signal reversal code. Background technique [0002] In the coding and decoding technology, CMI (Coded Mark Inversion) is a better coding format, in which the "1" code of NRZ (Not Return to Zero, Not Return Zero) alternately uses "00" and " 11", while the NRZ "0" code is fixed with "01". Therefore, within one clock cycle, the encoder input 1bit (bit) NRZ code output becomes 2bit (bit) CMI code, such as figure 1 with figure 2 shown. The decoding process is just the opposite. [0003] This encoding method is widely used in low-speed data communication because it carries rich clock information and has a low DC component. Since the CMI is widely used, there are many schemes for encoding and decoding the CMI. Initially, most solutions were implemented using dedicated interface chips. With the devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/11
Inventor 黄广奎赵红博
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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