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公开(公告)号：US11589751B2
公开(公告)日：2023-02-28
申请号：US16625225
申请日：2018-06-21
Applicant: KONINKLIJKE PHILIPS N.V.
Abstract: A method (300) for detecting one or more caries using an imaging device (10), the method including the steps of: (i) directing (320) light from a first light source (12) toward a tooth (40); (ii) measuring (340), with an optical sensor (16), transmission of light from the first light source through the tooth; (iii) directing (330) light from a second light source (14) toward the tooth, wherein the second light source directs light at the tooth at a different angle relative to the first light source; (iv) measuring (350), with the optical sensor, reflectance from the tooth of light from the second light source; (v) comparing (360) the measured transmission to the measured reflectance; and (vi) determining (370), based at least in part on said comparison, whether a caries is present in the tooth.
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公开(公告)号：US09910508B2
公开(公告)日：2018-03-06
申请号：US15115810
申请日：2015-02-03
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura
IPC: G06F3/01 , G06F3/03 , G06F3/0346
CPC classification number: G06F3/017 , G06F3/011 , G06F3/014 , G06F3/0304 , G06F3/0308 , G06F3/0346
Abstract: The invention relates to movement detection apparatus (1) for detecting a hand movement like a hand gesture which may be used for controlling a computer or another device. A light emitting device emits light into tissue at the wrist (5) of a person and a light detection device detects light, which has travelled through the tissue, at the wrist and generates a light detection signal based on the detected light, wherein a hand movement determination unit determines the hand movement based on the light detection signal. When the hand moves, i.e., for instance, when it rotates or when a finger moves, the composition of the tissue, through which the light travels, and hence the light detection signal change. This change in the light detection signal can be used to reliably determine the respective movement of the hand in a way which is very convenient for the person.
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公开(公告)号：USD803211S1
公开(公告)日：2017-11-21
申请号：US35500686
申请日：2015-09-07
Applicant: KONINKLIJKE PHILIPS N.V.
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4.发明申请METHOD AND APPARATUS FOR OPTICAL SENSING OF TISSUE VARIATION AT INCREASED ACCURACY 审中-公开提高精度的组织变化的光学感测方法与装置公开(公告)号：US20170055860A1
公开(公告)日：2017-03-02
申请号：US15347876
申请日：2016-11-10
Applicant: KONINKLIJKE PHILIPS N.V.
CPC classification number: A61B5/02427 , A61B5/02433 , A61B5/02438 , A61B5/7214 , A61B5/7225 , A61B5/7228 , A61B2562/0238 , A61B2562/04
Abstract: The present embodiment relates to a method and apparatus for measuring a tissue variation signal (e.g. a photoplethysmographic (PPG) signal) without large direct current (DC) or low frequency (LF) offset which normally limit the sensor accuracy through motion artefacts and/or dynamic range requirements. The proposed solution is based on a separation of the PPG signal from the disturbance. This can be achieved by creation of a modulated PPG signal, or by creation of a differential PPG signal and an optimized sensor configuration which is adapted to remove DC or LF components.
Abstract translation: 本实施例涉及一种用于测量组织变化信号（例如光电容积描记（PPG）信号）的方法和装置，其不需要大的直流（DC）或低频（LF）偏移，这通常通过运动伪影和/或 动态范围要求。 所提出的解决方案是基于PPG信号与干扰的分离。 这可以通过产生调制的PPG信号，或通过产生差分PPG信号和优化的传感器配置来实现，该配置适于去除DC或LF分量。
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公开(公告)号：US10376164B2
公开(公告)日：2019-08-13
申请号：US15763474
申请日：2016-09-28
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura , Andrei Nicolae
IPC: A61B5/00 , A61B5/024 , A61B5/026 , A61B5/0295 , A61B5/1455
Abstract: PPG sensor emits light at at least three wavelengths (Y1-Y3) and detects the reflected light. The PPG sensor comprises a motion correction unit (130) for correcting motion artefacts from the detected light signals by subtracting the output signal of the detected light at the second wavelength (Y2) from an average of an output signal of the detected light at the first and third wavelength (Y1, Y3). The three wavelengths (Y1-Y3) are arranged around 550 nm. The second wavelength (Y2) is arranged equal distantly between the first and third wavelength.
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Patent Agency Ranking
公开(公告)号：US10183142B2
公开(公告)日：2019-01-22
申请号：US14783114
申请日：2014-04-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Gary Nelson Garcia Molina , Cristian Nicolae Presura , Stefan Pfundtner , Sander Theodoor Pastoor
Abstract: The present disclosure pertains to a system and method for managing a sleep session of a subject. Managing the sleep session is based on cardiac activity in the subject during the sleep session. Cardiac activity, as monitored via one or more sensors worn on an extremity of the subject and/or placed at a distance from the subject, is used to determine periods of slow wave sleep. Sensory stimulation is delivered to the subject during the periods of slow wave sleep to enhance slow wave activity. Wearing a sensor on an extremity, and/or placing a sensor at a distance from the subject during sleep, as opposed to the subject wearing an EEG cap, is more comfortable for the subject.
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公开(公告)号：US09980655B2
公开(公告)日：2018-05-29
申请号：US15110625
申请日：2015-03-09
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura , David Antoine Christian Marie Roovers , Ruxandra Valentina Bobiti
IPC: A61B5/0205 , A61B5/11 , A61B5/00 , A61B5/08 , A61B5/024
CPC classification number: A61B5/02055 , A61B5/02416 , A61B5/02438 , A61B5/08 , A61B5/11 , A61B5/1118 , A61B5/6815 , A61B5/6824 , A61B5/7275 , A61B5/7278 , A61B2560/0209 , A61B2562/0219 , A61B2562/0247 , A61B2562/029 , G06F19/00
Abstract: A heart rate monitor system (100) for monitoring a heart rate of a user is provided. The heart rate monitor system (100) comprises at least one primary heart rate sensor (110) for measuring or determining a heart rate of a user. The at least one primary heart rate sensor (110) has a first power consumption. The heart rate monitor system (100) also comprises at least one secondary sensor (120) for measuring at least one physiological factor influencing the heart rate of a user. The at least one secondary sensor (120) has a second power consumption which is lower than the first power consumption of the at least one primary heart rate sensor (110). The heart rate monitor system (100) further comprises a power management unit (160) for managing an operation and/or power consumption of the at least one primary heart rate sensor (110) based on information (126) from the at least one secondary sensor (120). The heart rate monitor system comprises a model unit for estimating a heart rate of a user based on a model stored in the model unit and information received from the at least one secondary sensor. The model unit is coupled to the power management unit via a feedback loop such that the power management unit is adapted to compare the estimated heart rate with the measured heart rate and to control the operation of the primary sensor in dependence on the comparison.
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公开(公告)号：US20180110423A1
公开(公告)日：2018-04-26
申请号：US15565969
申请日：2016-04-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura , Lisa Opstal , Francesco Sartor , Calina Ciuhu
IPC: A61B5/026 , A61B5/00 , A61B5/0205
CPC classification number: A61B5/0261 , A61B5/02055 , A61B5/02427 , A61B5/02433 , A61B5/02438 , A61B5/6843 , A61B5/721 , A61B5/7214 , A61B5/746 , A61B2562/0219 , A61B2562/0238 , A61B2562/0242 , A61B2562/04
Abstract: The invention relates to an optical sensor device (1) for determining a blood perfusion parameter of a user. A light source (2) provides coherent light for scattering in a tissue sample (11) and a light detection unit (3) receives scattered coherent light in a re-emission geometry, the light detection unit (3) comprising plural light detection elements (32a; 32b) for capturing light intensity values in increasing distances from the light source (2) in accordance with different tissue depths. An evaluation unit (10) determines contrast values based on the captured light intensities, determines one motion-corrected value of the blood perfusion parameter based on the contrast values associated with the different tissue depths. Moreover, the invention relates to a method determining at least one blood perfusion parameter using the sensor device (1).
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公开(公告)号：US20170086753A1
公开(公告)日：2017-03-30
申请号：US15278317
申请日：2016-09-28
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura , Andrei Nicolae
CPC classification number: A61B5/02427 , A61B5/0082 , A61B5/0261 , A61B5/0295 , A61B5/14551 , A61B5/7214 , A61B2562/0238
Abstract: PPG sensor emits light at at least three wavelengths (Y1-Y3) and detects the reflected light. The PPG sensor comprises a motion correction unit for correcting motion artefacts from the detected light signals by subtracting the output signal of the detected light at the second wavelength (Y2) from an average of an output signal of the detected light at the first and third wavelength (Y1, Y3). The three wavelengths (Y1-Y3) are arranged around 550 nm. The second wavelength (Y2) is arranged equal distantly between the first and third wavelength.
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公开(公告)号：US20160331251A1
公开(公告)日：2016-11-17
申请号：US15110121
申请日：2015-01-22
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Cristian Nicolae Presura
CPC classification number: A61B5/02427 , A61B5/02438 , A61B5/6824 , A61B5/7214 , A61B2560/0209 , A61B2560/0242 , A61B2562/0242
Abstract: The invention relates to an optical device for measuring a heart rate of a user. Said optical device comprises: two light sources (1,2) for emitting light into the skin of the user, a sensor (3) for sensing the light signals emitted by each of the two light sources and reflected through the skin of the user so as to determine the heart rate of the user. The two light sources (1,2) are situated at different distances from the sensor such that the light signals received from each of the two light sources have a different penetration depth into the skin.
Abstract translation: 本发明涉及一种用于测量用户心率的光学装置。 所述光学装置包括：用于将光发射到用户皮肤的两个光源（1,2），用于感测由两个光源中的每一个发射并通过用户的皮肤反射的光信号的传感器（3） 以确定用户的心率。 两个光源（1,2）位于与传感器不同的距离处，使得从两个光源中的每一个接收的光信号具有与皮肤不同的穿透深度。
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