公开(公告)号：US11953612B2

公开(公告)日：2024-04-09

申请号：US17338971

申请日：2021-06-04

Applicant: Stichting IMEC Nederland

Inventor： Lichen Yao ,  Pepijn Boer ,  Jac Romme

IPC: G01S13/84 ,  G01S5/02 ,  H04B17/318

CPC classification number: G01S5/0246 ,  G01S5/02525 ,  G01S5/0268 ,  H04B17/318

Abstract: A method of ranging between a first and a second radio signal transceiver comprises calculating a preliminary estimate of a value proportional to a one-way frequency domain channel response, for a frequency of a plurality of frequencies and for each of a first antenna combination and a second antenna combination of a plurality of antenna combinations; calculating a comparison value for the preliminary estimate, for the frequency and for each of the first antenna combination and the second antenna combination; determining, for the frequency and the first antenna combination, a corrected estimate of the value proportional to the one-way frequency domain channel response based on the preliminary estimate and the comparison value, for the first antenna combination and the second antenna combination; and performing a ranging calculation between the first and the second radio signal transceiver based on a plurality of such corrected estimates.

公开(公告)号：US11911136B2

公开(公告)日：2024-02-27

申请号：US16901385

申请日：2020-06-15

Applicant: Stichting IMEC Nederland

Inventor： Carlos Agell ,  Evelien Hermeling ,  Vojkan Mihajlovic

IPC: A61B5/021 ,  A61B5/0225 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/318

CPC classification number: A61B5/02125 ,  A61B5/0205 ,  A61B5/0225 ,  A61B5/02116 ,  A61B5/318 ,  A61B5/4803 ,  A61B5/7203 ,  A61B5/725 ,  A61B5/7228 ,  A61B5/7253

Abstract: A device for calculating a subject's cardiac pulse transit or arrival time information is configured to receive an electronic audio signal with information indicative of a human voice signal and a primary cardiac pulse signal; generate a power spectral profile of a section of the electronic audio signal, and detect a fundamental frequency (F0) of the generated power spectral profile; generate a denoised audio signal; generate a time-domain intermediate signal that captures frequency, amplitude and/or phase of the denoised audio signal; detect at least one intermediate signal fiducial point, within a human cardiac band, in the intermediate signal; detect at least one primary cardiac pulse fiducial point, within a human cardiac band, in the primary cardiac pulse signal; calculate pulse transit time or pulse arrival time information between the at least one detected primary cardiac signal fiducial point and the at least one detected intermediate signal fiducial point.

公开(公告)号：US20240035964A1

公开(公告)日：2024-02-01

申请号：US18224135

申请日：2023-07-20

Applicant: Stichting Imec Nederland

Inventor： Mark ZENTILE ,  Xu Zhang ,  Peter Offermans ,  David Young ,  Arjan Tibbe

IPC: G01N21/41

CPC classification number: G01N21/4133 ,  G01N2201/08

Abstract: According to an aspect of the present inventive concept there is provided a probe for analysis of a liquid in a mixture of the liquid and solid substance. The probe comprises: a tube comprising a sample end configured to be inserted into the mixture; a cap configured to come into contact with the mixture at the sample end, the cap comprising one or more openings configured for allowing passage of the liquid therethrough, and for preventing passage of the solid substance therethrough; and an optical measurement head arranged in the tube and configured to come into contact with the liquid having passed the one or more openings, wherein the optical measurement head is configured to collect measurement information for analysis of the liquid.

公开(公告)号：US11860265B2

公开(公告)日：2024-01-02

申请号：US17386843

申请日：2021-07-28

Applicant: Stichting IMEC Nederland

Inventor： Rainer Oliver Hornung ,  Peng Zhang ,  Marco Mercuri ,  Paul Mateman ,  Lichen Yao

IPC: G01S13/42 ,  G01S7/35 ,  G01S13/58

CPC classification number: G01S13/426 ,  G01S7/354 ,  G01S7/356 ,  G01S13/584

Abstract: A method for extracting spatial resolution and/or velocity resolution of a single-input single-output radar acquiring raw radar data with a frequency scanning antenna is provided. The method includes steering a radar beam with the aid of the frequency scanning antenna with respect to an area to be illuminated by the radar, and dividing the area into at least two angular sectors. In this context, the at least two angular sectors are configured in a manner that the at least two angular sectors overlap with respect to each other.

公开(公告)号：US20230380816A1

公开(公告)日：2023-11-30

申请号：US18320766

申请日：2023-05-19

Applicant: Stichting IMEC Nederland

Inventor： Rogier Schoeman ,  Klaus Mathwig

IPC: A61B10/00

CPC classification number: A61B10/0045 ,  A61B2010/0061 ,  A61B2562/162

Abstract: An ingestible device for sampling material at least one time is provided. The ingestible device includes a first chamber that is enlargeable in volume and that includes an inlet, and that can be filled with the material to be sampled, a second chamber that is diminishable in volume and that includes an outlet, and a reversible actuating mechanism. The reversible actuating mechanism is configured such that triggering the reversible actuating mechanism leads to an enlargement of the first chamber to collect the material to be sampled through the inlet and also leads to a diminishment of the second chamber.

公开(公告)号：US20230190178A1

公开(公告)日：2023-06-22

申请号：US18078154

申请日：2022-12-09

Applicant: Stichting IMEC Nederland

Inventor： Aniek EVEN ,  Francesca LEONARDI ,  Nick VAN HELLEPUTTE ,  Rachel ARMSTRONG

IPC: A61B5/00 ,  A61B5/07

CPC classification number: A61B5/4216 ,  A61B5/6861 ,  A61B5/073 ,  A61B2562/162 ,  A61B2560/0214

Abstract: The current disclosure relates to methods and devices for measuring concentrations of analytes in the gastrointestinal tract of a subject by orally administering a smart pill to the subject, the smart pill comprising two or more sensors, a reference electrode, a power source, a communication interface and electronic circuits, each sensor being able to measure an analyte in the gastrointestinal tract of said subject, wherein the two or more sensors measure different analytes, measuring a concentration of two or more analytes using the two or more sensors, wherein one of the sensors is a pH sensor for measuring hydrogen ions, and wherein the pH sensor is able to locate the smart pill in the gastrointestinal tract by correlating the measured hydrogen ion concentration to a location in the gastrointestinal tract, and transmitting, using the communication interface, the measured concentrations from the two or more sensors to a base device located outside of the body of the subject.

公开(公告)号：US20230181902A1

公开(公告)日：2023-06-15

申请号：US18074831

申请日：2022-12-05

Applicant: Stichting IMEC Nederland

Inventor： Ilkka KOSUNEN ,  Vojkan MIHAJLOVIC

IPC: A61N1/36

CPC classification number: A61N1/36034

Abstract: A method for controlling a stimulation signal for brain stimulation comprises: transmitting a trigger signal for triggering a stimulation generator to output a high frequency synchronization signal exhibiting periodical modifications; receiving a measurement signal representing brain activity comprising neural oscillations and a response to the high frequency synchronization signal; determining adjustment of a phase of the stimulation signal based on a phase difference between the neural oscillations and the modifications of the high frequency synchronization signal; and transmitting a phase information signal for providing information of an adjusted phase of the stimulation signal to be used by the stimulation generator.

公开(公告)号：US20230035737A1

公开(公告)日：2023-02-02

申请号：US17813765

申请日：2022-07-20

Applicant: Stichting IMEC Nederland

Inventor： Alireza Sheikh ,  Jac Romme

IPC: H04W64/00

Abstract: Example embodiments relate to methods for estimating a location of at least one mobile network node and respective network. An example method for estimating a location of at least one mobile network node of a wireless communication network including the at least one mobile network node and at least two static network nodes includes performing initial range measurements between the at least two static network nodes in a pairwise manner. The method also includes determining an initial location estimate. Additionally, the method includes determining an estimate for corresponding noise samples. Further, the method includes estimating corresponding initial parameters of a Gaussian mixture noise model. In addition, the method includes determining a weighted sum of respective refined parameters of the Gaussian mixture noise model and the corresponding initial parameters of the Gaussian mixture noise model.

公开(公告)号：US20220407845A1

公开(公告)日：2022-12-22

申请号：US17842440

申请日：2022-06-16

Applicant: Stichting IMEC Nederland ,  Katholieke Universiteit Leuven, KU LEUVEN R&D

Inventor： Mohieddine El Soussi ,  Abuding Aishajiang

IPC: H04L9/40

Abstract: A system is provided for performing secure key exchange between a plurality of nodes of a communication network. The system comprises a master node and at least two slave nodes. In this context, the master node is configured to authenticate the at least two slave nodes with a pair-wise authentication key corresponding to each pair of master node and slave nodes. The master node is further configured to generate a group authentication key common to the plurality of nodes. Furthermore, the master node is configured to encrypt the group authentication key with the pair-wise authentication key for each respective pair of master node and slave nodes, thereby generating a respective encrypted group authentication key. Moreover, the master node is configured to communicate the encrypted group authentication key to the respective slave nodes.

公开(公告)号：US20220355013A1

公开(公告)日：2022-11-10

申请号：US17728637

申请日：2022-04-25

Applicant: IMEC VZW ,  Stichting IMEC Nederland

Inventor： Fokko Wieringa ,  Willem Van Roy ,  Patrick van Deursen ,  Lucas Lindeboom

IPC: A61M1/36

Abstract: According to an aspect there is provided a method for automatic maintenance of a dialysis system. The dialysis system includes a plurality of filter sections where each filter section includes a blood flow channel, a dialysate flow channel, and a membrane separating the blood flow channel from the dialysate flow channel and having a plurality of pores through which substances are exchanged between a blood flow in the blood flow channel and a dialysate flow in the dialysate flow channel. The method includes determining, for each filter section of the plurality of filter sections, whether a maintenance criterion is fulfilled. The method also includes triggering a maintenance event for a filter section of the plurality of filter sections for which the maintenance criterion is fulfilled. The method also includes executing the maintenance event and optionally administering a thrombolytic agent to the blood flow channel of the filter section.