Patents by Inventor Caifeng Shan

Caifeng Shan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10292623
    Abstract: The present invention relates to apparatus (10) for determining a respiration volume signal from a subject (12), comprising a processing unit (28) for receiving image data (26) detected from a field of view (42) and for determining an alternating signal (S) including vital sign information (R) of the subject (12) from the image data (26), an analysis unit (30) for determining at least one characteristic parameter (A) corresponding to a respiration parameter of the subject (12) on the basis of the alternating signal (S), a calibration unit (32) for determining a calibration value (V1, V2) on the basis of a breathing volume measured during inhale and/or exhale of the subject (12) by means of an airflow or an air volume measurement, and a calculation unit (34) for calculating the respiration volume of the subject (12) on the basis of the calibration value (V1, V2) and the at least one characteristic parameter (A).
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: May 21, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Mukul Julius Rocque, Caifeng Shan
  • Patent number: 10201058
    Abstract: Disclosed is a method for improving a lighting condition with a wearable computing device (100), the method comprising determining (302) an actual light condition with an optical sensor arrangement (114, 220); determining (303) the user activity with a further sensor arrangement (116, 230) for determining a user activity, said user activity being associated with a suitable lighting condition for performing said activity; comparing (304), on the wearable computing device, the actual light condition with the suitable light condition; and generating (306, 406) a signal with the wearable device if the actual light condition deviates from the suitable light condition. A computer program product including computer program code for implementing this method when executed on a wearable computing device (100), a wearable computing device (100) including the computer program product and a lighting system kit including a lighting system (200) and the wearable computing device (100) are also disclosed.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: February 5, 2019
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Caifeng Shan, Radu Serban Jasinschi, Ronaldus Maria Aarts
  • Patent number: 10178958
    Abstract: A device for obtaining vital sign information of a living being comprises a detection unit that receives light in at least one wavelength interval reflected from at least a region of interest of a living being and that generates an input signal from the received light. A processing unit processes the input signal and derives vital sign information of the living being from the input signal by use of remote photoplethysmography. An illumination unit illuminates at least the region of interest with light, and a control unit controls the illumination unit based on the input signal and/or the derived vital sign information.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: January 15, 2019
    Assignee: Koninklijke Philips N.V.
    Inventors: Siegfried Walter Kaestle, Caifeng Shan
  • Publication number: 20180249918
    Abstract: The present invention relates to a wearable device for obtaining signals from a subject for use in the monitoring of pulse-related information of the subject. To enable the use of such a device in the monitoring of pulse-related information of the subject, which provides for unobtrusive, reproducible, easy to use, and simple measurements, the device comprises a device body (20), a PPG signal sensing unit (21) for acquiring a first photoplethysmography, PPG, signal from a first body location of the subject's body, and an imaging unit (22) for acquiring a sequence of images from a second body location of the subject's body different from the first body location, said sequence of images being configured for deriving a second PPG signal for the second body location of the subject's body. Said PPG signal sensing unit and said imaging unit are mounted in or at the device body and are configured to simultaneously acquire the first PPG signal and the sequence of images.
    Type: Application
    Filed: August 24, 2016
    Publication date: September 6, 2018
    Inventors: Ihor Olehovych Kirenko, Ronaldus Maria Aarts, Caifeng Shan
  • Publication number: 20180180591
    Abstract: A system for detecting halitosis is disclosed that comprises a gas sensor (116) for generating a sensor signal signalling the detection of compounds indicative of halitosis exhaled through an oral cavity; an image sensor (114) for capturing an image (500, 510) of a dental condition and/or tongue condition in said oral cavity; and a processor (110) communicatively coupled to the gas sensor and the image sensor and adapted to process the sensor signal and the image in order to determine if in case of the sensor signal signalling the presence of a compound indicative of halitosis, said halitosis originates from said oral cavity by determining the dental condition and/or tongue condition in said image. A method for detecting halitosis and a computer program product implementing the method are also disclosed.
    Type: Application
    Filed: June 24, 2016
    Publication date: June 28, 2018
    Inventors: RIM HELAOUI, AMIR HUSSEIN RMAILE, RADU SERBAN JASINSCHI, RONALD AARTS, CAIFENG SHAN, JAYPRAKASH PATEL, MARINUS KAREL JOHANNES DE JAGER
  • Patent number: 9955927
    Abstract: A system for accurately detecting a patient's movement during imaging procedures includes a camera for providing a stream of camera images of a part of a patient's exterior and a fiducial element mountable on part of the patient's exterior. The fiducial element is detectable in the stream of images. An image processor is configured to detect a displacement of the fiducial element based on consecutive images including in at least the stream of images and to generate an output signal indicative of the displacement. The fiducial element has an in-plane stiffness which is substantially larger than an in-plane stiffness of the part of the patient's exterior. In addition, the fiducial element and the part of the patient's exterior are provided with substantially equal outer in-plane dimensions.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: May 1, 2018
    Assignee: Koninklijke Philips N.V.
    Inventors: Bernardus Hendrikus Wilhelmus Hendriks, Michael Cornelis Van Beek, Peter-Andre Redert, Frederik Jan De Bruijn, Drazenko Babic, Robert Johannes Frederik Homan, Ralph Braspenning, Wei Pien Lee, Karl Catharina Van Bree, Caifeng Shan
  • Patent number: 9943371
    Abstract: The present disclosure relates to the measurement of vital signs such as a respiratory rate or a heart rate. In particular, a system (1) for determining a vital sign of a subject (100), comprising an imaging unit (2) for obtaining video data of the subject, a marker (10, 20, 60, 61) directly or indirectly attached to a body of the subject, wherein the marker comprises a graphical pattern (11, 21), an image processing unit (3) for detecting said marker in said video data, and an analysis unit (4) adapted to extract a vital sign parameter related to the vital sign of the subject from said video data and to determine the vital sign from said vital sign parameter. Further aspects of the disclosure relate to a device and a method for determining a vital sign of a subject and a computer program for carrying out said method.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: April 17, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Erik Bresch, Jens Muehlsteff, Timo Tigges, Alexander Dubielczyk, Caifeng Shan
  • Publication number: 20180014903
    Abstract: Disclosed is a head-mountable computing device comprising at least one display module; an interface adapted to receive signals and/or data acquired by one or more sensors and to receive data generated by one or more medical devices operated by a wearer of the head-mountable computing device; a processor adapted to identify the wearer's activity based on the received signals and/or data acquired by the one or more sensors and to control said at least one display module to display assistance information on said display module corresponding to the identified wearer's activity.
    Type: Application
    Filed: December 9, 2015
    Publication date: January 18, 2018
    Inventors: Caifeng SHAN, Radu Serban JASINSCHI, Ronaldus Maria AARTS
  • Patent number: 9839375
    Abstract: Data derivable from remotely detected electromagnetic radiation (16) emitted or reflected by a subject (12) is processed. The data includes physiological information. An input signal is received and indicative entities are transmitted. The indicative entities being indicative of physiological information representative of at least one vital parameter (17; 150) in a subject (12) of interest, wherein the indicative entities are detected under consideration of at least one defined descriptive model (114) describing a relation between physical skin appearance characteristics and a corresponding representation in the input signal such that non-indicative side information represented by non-indicative entities in the input signal is substantially undetectable in a resulting transmitted signal. The at least one vital parameter (17; 150) is detected from the transmitted signal including the indicative entities.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: December 12, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Caifeng Shan, Ihor Olehovych Kirenko
  • Publication number: 20170351326
    Abstract: Disclosed is an eye training system (10) including a head-mountable computing device (100) comprising at least one display module (106, 106?) arranged to be viewed by the wearer of the head-mountable computing device when wearing the device; and a display processor (108) coupled to the at least one display module for controlling the at least one display module and adapted to display an initial set of eye exercises on the at least one display module; a sensor arrangement (120) for monitoring eye responses of the wearer to the displayed initial set of eye exercises; and a data processor (110) adapted to receive eye response data from the sensor arrangement and to process the eye response data; wherein the display processor is further adapted to display a subsequent set of eye exercises on the at least one display module in response to a processing result of the processed eye response data. A computer program product is also disclosed.
    Type: Application
    Filed: November 4, 2015
    Publication date: December 7, 2017
    Inventors: RONALDUS MARIA AARTS, RADU SERBAN JASINSCHI, CAIFENG SHAN
  • Publication number: 20170325686
    Abstract: The present invention relates to a system and a related method for extracting physiological information from remotely detected electromagnetic radiation. The system comprises an interface configured for receiving a data stream comprising image data representing an observed overall region comprising at least one subject of interest; a partitioning unit configured for defining a plurality of sub regions in the overall region; and a classifier configured for classifying the plurality of sub regions into at least one indicative type of region and at least one auxiliary type of region, wherein the at least one indicative type of region comprises at least one indicative region of interest at least partially representing the subject of interest. Preferably, the at least one auxiliary type of region comprises at least one reference region.
    Type: Application
    Filed: December 20, 2013
    Publication date: November 16, 2017
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Caifeng SHAN, Alexander DUBIELCZYK, Andreas Wolfgang SCHLACK, Rolf NEUMANN
  • Publication number: 20170311922
    Abstract: The present invention relates to a visualization apparatus (1) comprising a signal processor (2) for processing measurement signals from an ultrasound measurement (3) and a rendering device (4) coupled to a processor for rendering a representation for discerning a region of tissue with changed property (42) upon energy application to the tissue from a region with unchanged property (41) within two extremities (44,47) of the representation indicative of two boundaries defining the tissue thickness. The rendering of the tissue with changed property (42) and the tissue with unchanged property (41) with different visual aspects is readily absorbable by a person who applies energy to the tissue.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 2, 2017
    Inventors: CAIFENG SHAN, GODEFRIDUS ANTONIUS HARKS, HARM JAN WILLEM BELT, SZABOLCS DELADI, DAVID L. MCGEE, DARRELL L. RANKIN
  • Patent number: 9770212
    Abstract: Physiological information is extracted from detected electromagnetic radiation emitted or reflected by a subject (10). A data stream (30) derivable from the electromagnetic radiation is received. The data stream (30) includes a sequence (76; 152) of signal samples (78a, 78b, 78c; 154a, 154b, 154c) indicative of desired subject motion and of disturbing motion, the signal samples representing at least one region of interest (84; 164) and at least one non-indicative motion region (86; 166). The at least one defined region of interest (84; 164) exhibiting an at least partially periodic indicative motion pattern attributable to at least one physiological parameter (56), and a disturbing motion portion. A sequence (158) of motion compensated samples (80; 160a, 160b, 160c) at least partially compensated for undesired overall motion is derived.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: September 26, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Caifeng Shan, Ihor Olehovych Kirenko
  • Publication number: 20170265272
    Abstract: Disclosed is a method for improving a lighting condition with a wearable computing device (100), the method comprising determining (302) an actual light condition with an optical sensor arrangement (114, 220); determining (303) the user activity with a further sensor arrangement (116, 230) for determining a user activity, said user activity being associated with a suitable lighting condition for performing said activity; comparing (304), on the wearable computing device, the actual light condition with the suitable light condition; and generating (306, 406) a signal with the wearable device if the actual light condition deviates from the suitable light condition. A computer program product including computer program code for implementing this method when executed on a wearable computing device (100), a wearable computing device (100) including the computer program product and a lighting system kit including a lighting system (200) and the wearable computing device (100) are also disclosed.
    Type: Application
    Filed: September 7, 2015
    Publication date: September 14, 2017
    Inventors: CAIFENG SHAN, RADU SERBAN JASINSCHI, RONALDUS MARIA AARTS
  • Publication number: 20170055853
    Abstract: Various embodiments relate to a wearable device for obtaining signals from a subject for use in the monitoring of pulse-related information of the subject. To enable the use of such a device in the monitoring of pulse-related information, which provides for unobtrusive, reproducible, easy to use, and simple measurements, the device comprises a body, a PPG signal sensing unit for acquiring a first PPG signal from a first body location of the subject, and an imaging unit for acquiring a sequence of images from a second body location of the subject's body different from the first body location, said sequence of images being configured for deriving a second PPG signal for the second body location of the subject. Said PPG signal sensing unit and said imaging unit are mounted in or at the device body and are configured to simultaneously acquire the first PPG signal and the sequence of images.
    Type: Application
    Filed: August 19, 2016
    Publication date: March 2, 2017
    Inventors: Ihor Olehovych Kirenko, Ronaldus Maria Aarts, Caifeng Shan
  • Patent number: 9579079
    Abstract: The present invention relates to a device (8) for determining tissue layer boundaries of a body (14), comprising a probe (10) for acquiring (S12) two or more ultrasound images (36) at adjacent positions of a surface (12) of the body (14), a converter (44) for converting (S14) said ultrasound images (36) separately to depth signals (46), wherein a depth signal (46) is obtained by summing intensities of one of said ultrasound images (36) along a line (66) of substantially constant depth in the body (14), a detector (48) for detecting (S16) a set of candidate tissue layer boundaries (50) for an ultrasound image (36) by thresholding the depth signal (46) obtained for said ultrasound image (36), a selection means (52) for selecting (S18) from a set of candidate tissue layer boundaries (50) a nearest candidate tissue layer boundary (54) that is nearest to the surface (12) of the body (14), and a processing means (56) for determining (S20) an actual tissue layer boundary (58) from the nearest candidate tissue layer
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: February 28, 2017
    Assignee: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Vincent Jeanne, Sebastian Maeueler, Caifeng Shan
  • Publication number: 20170035387
    Abstract: The invention relates to a contact determination apparatus for determining a degree of contact between a device (2) and a moving object (3), wherein the contact determination apparatus comprises a motion distribution providing unit for providing a motion distribution being indicative of motion in the surrounding of the device and a contact determination unit (14) for determining a degree of contact between the device and the object based on the provided motion distribution. Since the degree of contact between the device and the object is determined based on the provided motion distribution and not simply based on, for instance, a peak of an A-mode signal, the determination of the degree of contact can be less disturbed by artifacts like ring-down artifacts or by blood scattering, if the object is, for instance, tissue. This can lead to a more accurate determination of the degree of contact.
    Type: Application
    Filed: May 2, 2015
    Publication date: February 9, 2017
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Fei ZUO, Godefridus Antonius HARKS, Caifeng SHAN, Szabolcs DELADI, Harm Jan Willem BELT, Jaap KNOESTER
  • Publication number: 20160217260
    Abstract: Disclosed is a system (100) for patient triage, comprising a plurality of cameras (110) for distribution across an area (10) such as a patient waiting room, scene of an accident or the like; a processor (120) for processing the respective image signals of said cameras and adapted to extract indicators for individual patients (20) in said area from said respective image signals, said indicators being indicative of the condition of said individual patients; and a prioritizing unit (130) adapted to prioritize the individual patients based on the indicators. Also disclosed are a patient triage method and a computer program product.
    Type: Application
    Filed: January 14, 2016
    Publication date: July 28, 2016
    Inventors: Ronaldus Maria Aarts, Caifeng Shan, Radu Serban Jasinschi
  • Publication number: 20160007883
    Abstract: The present invention relates to apparatus (10) for determining a respiration volume signal from a subject (12), comprising a processing unit (28) for receiving image data (26) detected from a field of view (42) and for determining an alternating signal (S)including vital sign information (R) of the subject (12) from the image data (26), an analysis unit (30) for determining at least one characteristic parameter (A) corresponding to a respiration parameter of the subject (12) on the basis of the alternating signal (S), a calibration unit (32) for determining a calibration value (V1, V2) on the basis of a breathing volume measured during inhale and/or exhale of the subject (12) by means of an airflow or an air volume measurement, and a calculation unit (34) for calculating the respiration volume of the subject (12) on the basis of the calibration value (V1, V2) and the at least one characteristic parameter (A).
    Type: Application
    Filed: March 12, 2014
    Publication date: January 14, 2016
    Inventors: Mukul Julius ROCQUE, Caifeng SHAN
  • Publication number: 20150374343
    Abstract: The present invention relates to an ultrasound imaging system (100) comprising: an ultrasound probe (10) that comprises a single element ultrasound transducer (16) for transmitting an receiving ultrasound signals; a movement sensor (18) for sensing a displacement-over-time signal x(t) of a displacement (x) of the ultrasound probe (10) relative to an examination object (24) during signal acquisition; an image acquisition hardware (26) that is configured to reconstruct an M-mode ultrasound image from the received ultrasound signals, said reconstructed M-mode ultrasound image being a two-dimensional image I(t,y) comprising multiple one-dimensional depth signals of substantially constant depth (y) in the examination object (24) illustrated over time (t), wherein the image acquisition hardware (26) is further configured to map said M-mode ultra-sound image I(t,y) to a two-dimensional second image I(x,y) comprising the depth signals illustrated over the displacement (x) by using the displacement-over-time signal x(
    Type: Application
    Filed: January 21, 2014
    Publication date: December 31, 2015
    Inventors: CAIFENG SHAN, FEI ZUO