即時多通道自動眼動雜訊去除器REAL-TIME MULTI-CHANNEL AUTOMATIC EYE BLINK ARTIFACT ELIMINATOR

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

102124669

專利證號

I 508702

專利獲證名稱

即時多通道自動眼動雜訊去除器REAL-TIME MULTI-CHANNEL AUTOMATIC EYE BLINK ARTIFACT ELIMINATOR

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2015/11/21

技術說明

本發明為基於獨立成分分析多通道腦波處理系統之有效硬體實現的即時眼動訊號自動去除器。由於腦波訊號像當微弱，腦波的擷取容易受到外界的干擾源干擾。此發明提供了一個眼動雜訊的去除器，主要的目的在於ICA處裡結束後，可以自動且即時的去除眼動雜訊。此發明的特色在於可以在每筆ICA結果輸入後，迅速的在0.25秒後完成當筆資料的眼動雜訊偵測。另外，此發明內包含了一種特殊的運算流程，來克服在每次判斷間資料邊界所造成的判斷失誤。此發明已經使用台積電的CMOS 90 nm製成實現。 This invention is a hardware-efficient implementation of an ICA-based automatic eye blink artifact eliminator for real-time multi-channel EEG processing system. Since EEG signals are very feeble, they are easy to be contaminated by artifacts. The proposed eliminator is used to remove eye-blink artifacts automatically in real-time after processing of ICA. It can reach output delay of 0.25s after each ICA result is generated. This invention also includes a special operation flow to overcome the boundary problem which might lead to incorrect detections. After the operation of eye blink artifact eliminator the results are used to reconstruct eye-blink artifacts free EEG data for further applications. The proposed eliminator hardware architecture has been designed using TSMC 90nm CMOS technology.

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