Patents by Inventor Lydia Leung

Lydia Leung 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).

  • Publication number: 20190282169
    Abstract: One example embodiment is an electronic device that measures physiological information of a living subject. The electronic device includes a sensor assembly, a first driving unit with an electromagnetic structure and a second driving unit. The first driving unit drives the sensor assembly to scan the living subject's skin along a scan path thereabove in a contactless way to determine a measuring position. The second driving unit drives the sensor assembly to move towards and contact the living subject's skin to measure the physiological information based on the measuring position.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 19, 2019
    Inventors: Hung Tat CHEN, Wenbo GU, Kwan Wai TO, Lap Wai Lydia LEUNG
  • Patent number: 10105089
    Abstract: Techniques for effectively and accurately measuring psychological influencing factors, such as the white coat effect and mental stress, that may affect or otherwise influence biometric measurements, such as blood pressure measurements, are described. Embodiments of a measurement validation system herein may utilize a method for determining an artery location on a living subject's skin and positioning a tonometry pressure sensor on the artery location for tonometric blood pressure measurement to obtain pressure pulse data for a subject. In operation according to embodiments, measurement logic of a measurement validation system may utilize the pressure pulse data to extract blood pressure data, heart rate data, blood pressure variability data, and heart rate variability data. The foregoing data may be utilized in identifying whether the blood pressure measurement properly and accurately reflects the situation of the subject.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: October 23, 2018
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Lap Wai Lydia Leung, Wenbo Gu
  • Publication number: 20160100787
    Abstract: Techniques for effectively and accurately measuring psychological influencing factors, such as the white coat effect and mental stress, that may affect or otherwise influence biometric measurements, such as blood pressure measurements, are described. Embodiments of a measurement validation system herein may utilize a method for determining an artery location on a living subject's skin and positioning a tonometry pressure sensor on the artery location for tonometric blood pressure measurement to obtain pressure pulse data for a subject. In operation according to embodiments, measurement logic of a measurement validation system may utilize the pressure pulse data to extract blood pressure data, heart rate data, blood pressure variability data, and heart rate variability data. The foregoing data may be utilized in identifying whether the blood pressure measurement properly and accurately reflects the situation of the subject.
    Type: Application
    Filed: November 5, 2015
    Publication date: April 14, 2016
    Inventors: Lap Wai Lydia Leung, Wenbo Gu
  • Patent number: 9204809
    Abstract: The present invention is a blood pressure measuring device comprising an optical sensing unit adapted for detecting optical pulses at a plurality of locations on an external surface of a user. The device also comprises a processing unit coupled to the optical sensing unit for determining an optimal location from the plurality of locations based on the detected optical pulses and a pressure sensing unit adapted for detecting a pressure pulse of the user at a location of measurement. The present invention also discloses a method of measuring a blood pressure of a user using a blood pressure measurement device. The advantage of the present invention is that by using an optical sensing unit to locate the artery of the user, or to compensate the misalignment from the artery, the blood pressure is more accurately determined. With the calibration method, the deficient cuff calibration can be waived in certain circumstances.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: December 8, 2015
    Assignee: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITED
    Inventors: Wenbo Gu, Chun Zhang, Tun Lam, Lap Wai Lydia Leung
  • Patent number: 8879060
    Abstract: A Raman signal detection and analyzing system and a method thereof are disclosed. The Raman signal is generated by emitting an excitation light to a sample. The Raman signal is then modulated by passing through a plurality of optical filter and modulator. The resulting modulated Raman signal comprises two orthogonal components, which intensities are to be computed based on the first harmonic of said modulated Raman signal. The content of a specific analyte within the sample can then be determined based on the ratio of the intensities of the two components.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: November 4, 2014
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Ka Cheung Kwok, Lut Hey Chu, Chun Zhang, Lap Wai Lydia Leung
  • Publication number: 20120316448
    Abstract: The present invention is a blood pressure measuring device comprising an optical sensing unit adapted for detecting optical pulses at a plurality of locations on an external surface of a user. The device also comprises a processing unit coupled to the optical sensing unit for determining an optimal location from the plurality of locations based on the detected optical pulses and a pressure sensing unit adapted for detecting a pressure pulse of the user at a location of measurement. The present invention also discloses a method of measuring a blood pressure of a user using a blood pressure measurement device. The advantage of the present invention is that by using an optical sensing unit to locate the artery of the user, or to compensate the misalignment from the artery, the blood pressure is more accurately determined. With the calibration method, the deficient cuff calibration can be waived in certain circumstances.
    Type: Application
    Filed: February 1, 2012
    Publication date: December 13, 2012
    Inventors: Wenbo GU, Chun ZHANG, Tun LAM, Lap Wai Lydia LEUNG
  • Patent number: 8013347
    Abstract: A remote-controllable lighting device comprising a first substrate and an adjacent second substrate maintained in a spaced apart relationship to allow airflow therebetween and at least partly overlapping each other, at least the second substrates carrying thereon at least one emission sources, the first substrate being located towards a proximal end of the device and the second substrate being located towards a distal end of the device; said first substrate being arranged so as to allow light generated by the at least one located second light emission source to pass thereby in a direction defining a primary light emission direction and said first light emission source located so as to emit light in said primary light emission direction; said first and second substrate being in thermal communication so as to allow heat generated by the at least one light emission sources to flow between the substrates so as to provide thermal distribution between the substrates, the first and second substrate being formed of a
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: September 6, 2011
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Zhikuan Zhang, Ming Lu, Lydia Leung, Kelvin Li, Enboa Wu
  • Patent number: 7860634
    Abstract: A method of determining the location information of a plurality of wheels mounted on a vehicle by obtaining a relationship between the lateral location of a wheel and the polarity of a transverse acceleration transmitted by an accelerometer of a wheel in response to a lateral turn of the vehicle in a direction of a lateral side of the vehicle and determining the lateral location of a wheel with reference to the polarity of the transverse acceleration signal transmitted by the accelerometer of the wheel upon the vehicle undergoing a lateral turn.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: December 28, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Kwan Wai Raymond To, Lap-Wai Lydia Leung, Ziyang Gao, Man Lung Ivan Sham, Chang Hwa Chung
  • Patent number: 7832278
    Abstract: Subject matter disclosed herein may relate to packaging for multi-chip semiconductor devices as may be used, for example, in tire pressure monitoring systems.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: November 16, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Man Lung Ivan Sham, Ziyang Gao, Chi Kuen Vincent Leung, Lap Wai Lydia Leung, Lourdito M. Olleres, Chang Hwa Tom Chung
  • Publication number: 20100249617
    Abstract: An apparatus for determining the blood pressure of a patient which allows the patient to first measure his measured blood pressure using a blood pressure measuring device and then, at a later time, estimate his current blood pressure using a blood pressure calculating device that includes a mathematical model for estimating blood pressure based on a current change in blood pressure induced by a heart beat and the previously measured blood pressure. The apparatus includes a transmitter device that detects the presence of a blood pressure calculating device connected to or in proximity of the blood pressure measuring device and transmits the previously measured blood pressure value to the blood pressure calculating device.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Applicant: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Lap Wai Lydia Leung, Kwan Wai Raymond To, Chi-Tin Luk, Chang Hwa Tom Chung
  • Publication number: 20090189269
    Abstract: A electronic circuit package having a flexible substrate with metals layers on one or more of its surfaces forming a wiring pattern and/or surface mount bonding pads. Passive electronic components are integrated onto component packages that are mounted to the flexible substrate and electrically connected with the wiring pattern or bonding pad. An active electronic device is mounted on the flexible substrate or bonding pad.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 30, 2009
    Inventors: Lap-Wai Lydia Leung, Chang Hwa Chung, Jie Liu, Chi Kuen Leung, Chiu Lun Chan
  • Publication number: 20090115051
    Abstract: An electronic circuit package has a thin-film circuit integrated with the ceramic substrate. The thin-film circuit includes at least two passive circuit elements joined by an integrated electrical interconnect. At least one active power electronic component mounted on the ceramic substrate and is electrically connected with the integrated thin-film circuit.
    Type: Application
    Filed: November 1, 2007
    Publication date: May 7, 2009
    Inventors: Lap-Wai Lydia Leung, Yu-Chih Chen, Chi Kuen Leung, Jyh-Rong Lin, Chang Hwa Chung
  • Publication number: 20090088939
    Abstract: A method of determining the location information of a plurality of wheels mounted on a vehicle by obtaining a relationship between the lateral location of a wheel and the polarity of a transverse acceleration transmitted by an accelerometer of a wheel in response to a lateral turn of the vehicle in a direction of a lateral side of the vehicle and determining the lateral location of a wheel with reference to the polarity of the transverse acceleration signal transmitted by the accelerometer of the wheel upon the vehicle undergoing a lateral turn.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Kwan Wai To, Lap-Wai Lydia Leung, Ziyang Gao, Man Lung Sham, Chang Hwa Chung
  • Publication number: 20080211369
    Abstract: A remote-controllable lighting device comprising a first substrate and an adjacent second substrate maintained in a spaced apart relationship to allow airflow therebetween and at least partly overlapping each other, at least the second substrates carrying thereon at least one emission sources, the first substrate being located towards a proximal end of the device and the second substrate being located towards a distal end of the device; said first substrate being arranged so as to allow light generated by the at least one located second light emission source to pass thereby in a direction defining a primary light emission direction and said first light emission source located so as to emit light in said primary light emission direction; said first and second substrate being in thermal communication so as to allow heat generated by the at least one light emission sources to flow between the substrates so as to provide thermal distribution between the substrates, the first and second substrate being formed of a
    Type: Application
    Filed: March 28, 2007
    Publication date: September 4, 2008
    Applicant: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
    Inventors: Zhikuan Zhang, Ming Lu, Lydia Leung, Kelvin Ll, Enboa Wu