FILTERING POWER LINE NOISES FROM ANALOG ELECTROPHYSIOLOGICAL SIGNALS IN REAL TIME

To remove electrical power line noises from analog electrograms and electrocardiograms.SOLUTION: A power line interference (PLI) suppression method includes receiving an input analog signal superimposed on PLI, and digitally estimating one or more harmonics of the PLI in real time. Responsively to t...

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Main Authors LIOR BOTZER, RAMI ROZEN, SHMUEL AUERBACH, AMIT YARIMI, ALEK VILENSKY, LEVIN MICHAEL, BAR-TAL MEIR, GOVARI ASSAF, EVGENY BOGNAC
Format Patent
LanguageEnglish
Japanese
Published 24.08.2023
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:To remove electrical power line noises from analog electrograms and electrocardiograms.SOLUTION: A power line interference (PLI) suppression method includes receiving an input analog signal superimposed on PLI, and digitally estimating one or more harmonics of the PLI in real time. Responsively to the one or more digitally estimated harmonics, one or more analog harmonic waveforms are outputted which match the respective one or more harmonics of the PLI. The input analog signal and the one or more analog harmonic waveforms are received, and the superimposed PLI in the input analog signal is suppressed using the one or more analog harmonic waveforms. An analog output signal is outputted which corresponds to the input analog signal having the suppressed PLI.SELECTED DRAWING: Figure 2 【課題】アナログ電位図及び心電図から電力線ノイズを除去すること。【解決手段】電力線干渉（ＰＬＩ）抑制方法は、ＰＬＩと重ね合わされた入力アナログ信号を受信することと、ＰＬＩの１つ又は２つ以上の高調波をリアルタイムでデジタル的に推定することと、含む。１つ又は２つ以上のデジタル的に推定された高調波に応答して、ＰＬＩのそれぞれの１つ又は２つ以上の高調波に整合する１つ又は２つ以上のアナログ高調波波形が出力される。入力アナログ信号及び１つ又は２つ以上のアナログ高調波波形が受信され、入力アナログ信号内の重ね合わされたＰＬＩが、１つ又は２つ以上のアナログ高調波波形を使用して抑制される。抑制されたＰＬＩを有する入力アナログ信号に対応するアナログ出力信号が出力される。【選択図】図２
Bibliography:Application Number: JP20230019817