A Serial Cascaded Single-bit Filter Structure for Eliminating Glitch Signals

A glitch signal, serial cascading technology, applied in the field of signal processing, can solve the problems that the system problems may not be repeated, the real signal is difficult to recover, and the system stability is affected. Universal effect
CN104065361BActive Publication Date: 2016-08-17BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Publication Date
2016-08-17

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Abstract

The invention relates to a serially cascaded single-bit filter structure for eliminating spur signals, comprising: a serially cascaded single-bit filter module, a loop counter circuit, a metastable elimination circuit; a serially cascaded single-bit filter module The filter module further includes a first-level single-bit filtering module, a second-level single-bit filtering module, a third-level single-bit filtering module... an nth-level single-bit filtering module; The original data disturbed by the glitch signal is recovered from each sampled data, and the design of eliminating glitch signals of different widths is realized by cascading single-bit filters in series, and the pulse signals of different sampling clock widths are filtered out step by step; The traditional equal time interval sampling scheme cannot correctly restore the insufficiency of the equal time interval glitch signal, and a general glitch signal elimination circuit is realized.
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Description

technical field

[0001] The invention relates to a serial cascaded single-bit filter structure for eliminating burr signals, and belongs to the technical field of signal processing. Background technique

[0002] With the increase of the signal speed of the circuit system and the deterioration of the electromagnetic environment, when the length of the transmission cable used is relatively long, crosstalk will occur between the transmitted signals, resulting in glitch signals; there are also different degrees of crosstalk between signals inside the PCB board. Glitch signals are generated; due to competition risks inside the chip, glitch signals are generated; glitch signals on different occasions have different impacts on the system, but they all lead to system instability or potential risks.

[0003] At present, the processing of burr elimination on the input signal mainly uses equal interval time sampling, but there are obvious shortcomings in such processing:

[0004] 1. Fo...

Claims

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