公开(公告)号：US10987007B2

公开(公告)日：2021-04-27

申请号：US16167817

申请日：2018-10-23

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Rundo ,  Sabrina Conoci ,  Piero Fallica

IPC: A61B5/02 ,  A61B5/024 ,  A61B5/04 ,  B60W40/08 ,  G16H50/30 ,  A61B5/00 ,  A61B5/0402

Abstract: A method of processing electrophysiological signals includes: receiving, over a limited time duration, sample electrocardiography (ECG) signals indicative of heart pulsatile activity occurring with a variable heart rate, wherein receiving the sample ECG signals is discontinued at an expiry of the limited time duration; receiving photoplethysmography (PPG) signals indicative of the heart pulsatile activity; determining a correlation between the sample ECG signals and the PPG signals; determining reconstructed ECG signals from the PPG signals as a function of the correlation between the sample ECG signals and the PPG signals; and estimating a heart rate variability of the variable heart rate as a function of the reconstructed ECG signals.

公开(公告)号：US20210068739A1

公开(公告)日：2021-03-11

申请号：US17009503

申请日：2020-09-01

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Rundo ,  Sabrina Conoci ,  Concetto Spampinato

IPC: A61B5/18 ,  A61B5/00 ,  A61B5/117 ,  A61B5/024 ,  G06N3/04 ,  G06F21/32

Abstract: An embodiment method comprises collecting at least one electrophysiological signal of a human over a limited time duration, and computing a set of electrophysiological signal features. The computing comprises at least one of: providing at least one reference electrophysiological signal and applying dynamic time warping processing to the at least one collected and at least one reference electrophysiological signals, applying stacked-auto-encoder artificial neural network processing to the collected electrophysiological signal, or filtering the electrophysiological signal collected via joint low-pass and high-pass filtering. The method further comprises applying pattern recognition processing to the computed set of features, producing a virtual key signal indicative of an identity of the human, and applying the virtual key signal to a user circuit to switch it between a first state and a second state as a result of the virtual key signal matching an authorized key signal stored in the user circuit.

公开(公告)号：US20190117096A1

公开(公告)日：2019-04-25

申请号：US16167817

申请日：2018-10-23

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Rundo ,  Sabrina Conoci ,  Piero Fallica

IPC: A61B5/024 ,  A61B5/04 ,  B60W40/08

Abstract: A method of processing electrophysiological signals includes: receiving, over a limited time duration, sample electrocardiography (ECG) signals indicative of heart pulsatile activity occurring with a variable heart rate, wherein receiving the sample ECG signals is discontinued at an expiry of the limited time duration; receiving photoplethysmography (PPG) signals indicative of the heart pulsatile activity; determining a correlation between the sample ECG signals and the PPG signals; determining reconstructed ECG signals from the PPG signals as a function of the correlation between the sample ECG signals and the PPG signals; and estimating a heart rate variability of the variable heart rate as a function of the reconstructed ECG signals.

公开(公告)号：US09183644B2

公开(公告)日：2015-11-10

申请号：US13949387

申请日：2013-07-24

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Rundo ,  Giuseppe Digiore ,  Alessandro Ortis ,  Sebastiano Battiato

IPC: G06T9/00 ,  H04N19/44 ,  H04N13/00 ,  H04N19/597 ,  H04N19/46 ,  H04N19/30 ,  H04N19/60

CPC classification number: G06T9/00 ,  H04N13/122 ,  H04N13/139 ,  H04N13/161 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/597 ,  H04N19/60

Abstract: In an embodiment, a first individual image and a second individual image constituting an encoded stereoscopic image, for example in JPEG format with respective levels of encoding quality and united in a multiple-image file, for example of the Multiple-Picture Object (MPO) type. The second level of encoding quality is lower than the first level of encoding quality. During decoding, the first individual image encoded with a first level of encoding quality and the second individual image encoded with a second level of encoding quality lower than the first level of encoding quality are extracted from the multiple-image file, then using information of the first extracted individual image for enhancing the second extracted individual image.

Abstract translation: 在一个实施例中，构成编码立体图像的第一单独图像和第二单独图像，例如具有各种编码质量的JPEG格式，并且合并在多图像文件中，例如多图像对象（MPO） 类型。 第二级编码质量低于第一级编码质量。 在解码期间，从多图像文件中提取用第一编码质量编码的第一单独图像和以低于第一编码质量水平的第二编码质量编码的第二单独图像，然后使用 第一提取的个体图像用于增强第二提取的个体图像。