Patents by Inventor Lai Wong

Lai Wong 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: 20180218587
    Abstract: A method and apparatus for predicting hospital bed exit events from video camera systems is disclosed. The system processes video data with a deep convolutional neural network consisting of five main layers: a 1×1 3D convolutional layer used for generating feature maps from raw video data, a context-aware pooling layer used for rectifying data from different camera angles, two fully connected layers used for applying pre-trained deep features, and an output layer used to provide a likelihood of a bed exit event.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Inventors: Alexander Sheung Lai WONG, Yongji FU, Brendan James CHWYL, Audrey Gina CHUNG, Mohammad Javad SHAFIEE
  • Publication number: 20180192923
    Abstract: A method for monitoring a patient in a bed may involve capturing images of the patient with multiple cameras in a vicinity of the bed, wirelessly transmitting the images of the patient from the multiple cameras to a processor including a memory device, processing the images to provide processed image data pertaining to a position of the patient relative to the bed to a user, and analyzing the processed image data to determine whether the patient is exiting the bed. The method may also optionally involve providing an alarm indicating that the patient is exiting the bed.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 12, 2018
    Inventors: Yongji Fu, Ibne Soreefan, Alexander Sheung Lai Wong, Mohammad Javad Shafiee, Brendan James Chwyl, Audrey Gina Chung
  • Patent number: 9880390
    Abstract: There is disclosed a novel system and method for improving spectral resolution and signal-to-noise ratio of a captured spectrum by employing digital beam reforming, digital slicing, and digital multiplexing. In an embodiment, the method comprises: and entrance aperture for the light to enter the apparatus, a collimating element (refractive or reflective), a dispersive element (single- or multi-axis), a focusing element (refractive or reflective), and a linear or array detector for acquisition of the spectrum. The spectrum is then digitally beam reformed, digitally beam sliced to increase spectral resolution, and digitally beam multiplexed to increase the signal-to-noise ratio. In addition the disclosed invention is also capable of performing digital beam refocusing which means the optical focusing power can be chosen such that its performance surpasses the performance of any analog optical focusing element thereby further increasing the spectral resolution and the signal-to-noise ratio of the spectrum.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: January 30, 2018
    Inventors: Alexander Sheung Lai Wong, Farnoud Kazemzadeh
  • Publication number: 20180018555
    Abstract: There is disclosed a novel system and method for building artificial neural networks for a given task. In an embodiment, the method utilizes one or more network models that define the probabilities of nodes and/or interconnects, and/or the probabilities of groups of nodes and/or interconnects, from sets of possible nodes and interconnects existing in a given artificial neural network. These network models can be constructed based on the properties of one or more artificial neural networks, or constructed based on desired architecture properties. These network models are then used to build combined network models using a model combiner module. The combined network models and random numbers generated by a random number generator module are then used to build one or more new artificial neural network architectures. New artificial neural networks are then built based on the newly built artificial neural network architectures and are trained for a given task.
    Type: Application
    Filed: February 10, 2017
    Publication date: January 18, 2018
    Inventors: Alexander Sheung Lai WONG, Mohammad Javad SHAFIEE
  • Publication number: 20170222164
    Abstract: A highly rigid tetradentate ligand is combined with a gold(III) ion as a thermally stable tetradentate gold(III) complex. The tetradentate gold(III) complex is a tetradentate gold(III) compound that can be used as a light-emitting material which can be used for fabricated of light-emitting devices such as an organic light-emitting diode (OLED). The tetradentate gold(III) compound can be deposited as a layer or a component of a layer using a solution-process or a vacuum deposition process. The luminescent tetradentate gold(III) compounds are robust and can provide electroluminescence (EL) with a high efficiency and brightness.
    Type: Application
    Filed: January 30, 2017
    Publication date: August 3, 2017
    Inventors: Vivian Wing-Wah Yam, Hok-Lai Wong, Yiu-Wing Wong, Mei-Yee Chan
  • Patent number: 9708528
    Abstract: In one embodiment, provided are a new class of diarylethene-containing photochromic compounds with the incorporation of silicon- or phosphorus-containing heterocycles into the “ethene” part of the diarylethene backbone that has been shown to be capable of displaying tunable, robust and thermally stable photochromic properties. Also provided are methods for synthesizing these compounds, as well as uses of these compounds as these compounds may be used as the photochromic layer in an optical recording material and other optical functioning devices.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 18, 2017
    Assignee: THE UNIVERSITY OF HONG KONG
    Inventors: Vivian Wing-Wah Yam, Jacky Chi-Hung Chan, Hok-Lai Wong, Nathan Man-Wai Wu
  • Patent number: 9709651
    Abstract: There is disclosed a novel system and method for improving MRI and DWI image quality and tissue detail and contrast is introduced and referred to in this disclosure as “compensated magnetic resonance imaging” or CMRI in which a compensation function and noise scale factor are determined during a calibration process by acquiring one or more test signals on the MRI system to determine a compensation function and noise scale factor, and signal acquisitions are conducted from a subject, and the signals are then used to reconstruct MRI images by maximizing a quality metric that takes the acquired signals, compensation function, and noise scale factor as part of the input parameters. Advantageously, by taking into a compensation function and a noise scale factor, CMRI can provide significantly improved MRI image quality and tissue detail and contrast.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: July 18, 2017
    Inventor: Alexander Sheung Lai Wong
  • Publication number: 20170172434
    Abstract: There is disclosed a system and method for measuring arterial and venous blood pulse waveforms (BPWs) of a subject utilizing photoplethysmography (PPG). In an embodiment, the system and method comprises: providing a plurality of virtual sensors positioned to cover a desired field-of-view of the subject, each virtual sensor adapted to detect and measure a BPW signal from an area of the subject's body and provide a BPW signal output; processing the BPW signal outputs of the plurality of virtual sensors to compare the BPWs at multiple areas of the subject's body to perform spatial perfusion analysis; and displaying at least one aggregate output based on the spatial perfusion analysis. At least one aggregate output may include a visualization of one or more perfusion patterns overlaid on a photographic image of the subject, and aggregate statistics including subject heart rate and breathing rate.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 22, 2017
    Inventors: Robert Andre AMELARD, Alexander Sheung Lai WONG
  • Patent number: 9619882
    Abstract: There is disclosed a novel form of imaging referred to in this disclosure as “correlated diffusion imaging” or CDI in which the tissue being imaged is characterized by a joint correlation of diffusion signal attenuation across multiple gradient pulse strengths and timings. Advantageously, by taking into account signal attenuation at different water diffusion motion sensitivities, correlated diffusion imaging can provide significantly improved delineation between cancerous tissue and healthy tissue when compared to existing diffusion imaging modalities. In an embodiment, the method comprises performing quantitative evaluation using receiver operating characteristic (ROC) curve analysis, tissue class separability analysis, and visual assessment to study correlated diffusion imaging for the task of identification of biological tissue of interest.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: April 11, 2017
    Inventor: Alexander Sheung Lai Wong
  • Patent number: 9588683
    Abstract: One variation of a dynamic tactile interface includes: a substrate defining a fluid channel and a fluid conduit fluidly coupled to the fluid channel; a tactile layer comprising a peripheral region and a deformable region, the peripheral region coupled to the substrate, and the deformable region arranged over the fluid conduit, disconnected from the substrate, and operable between a retracted setting and an expanded setting, the deformable region elevated above the peripheral region in the expanded setting; a tube comprising a first end fluidly coupled to the fluid channel and constrained relative to the substrate; a volume of fluid within the tube; and a rotary actuator coupled to the tube remote from the first end and configured to transition the deformable region from the retracted setting to the expanded setting by winding the tube to displace a portion of the volume of fluid within the tube into the fluid channel.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 7, 2017
    Assignee: Tactus Technology, Inc.
    Inventors: Micah B. Yairi, Craig Ciesla, Curtis Ray, Michael Jastrzebski, Amy Lai Wong, Simona Wong, Jonathon Jenkins, Nathan Knapp
  • Publication number: 20170031166
    Abstract: There is disclosed a novel system and method for improving spectral resolution and signal-to-noise ratio of a captured spectrum by employing digital beam reforming, digital slicing, and digital multiplexing. In an embodiment, the method comprises: and entrance aperture for the light to enter the apparatus, a collimating element (refractive or reflective), a dispersive element (single- or multi-axis), a focusing element (refractive or reflective), and a linear or array detector for acquisition of the spectrum. The spectrum is then digitally beam reformed, digitally beam sliced to increase spectral resolution, and digitally beam multiplexed to increase the signal-to-noise ratio. In addition the disclosed invention is also capable of performing digital beam refocusing which means the optical focusing power can be chosen such that its performance surpasses the performance of any analog optical focusing element thereby further increasing the spectral resolution and the signal-to-noise ratio of the spectrum.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 2, 2017
    Inventors: Alexander Sheung Lai WONG, Farnoud KAZEMZADEH
  • Patent number: 9554560
    Abstract: Disclosed is a system for a variable animal interaction device including an animal interaction device; a shell at least partially embedded into the animal interaction device; a component that is substantially encapsulated within the shell, wherein the shell is a barrier between the animal and the component; a detection device that detects a change in the shell; a deterrent device that has at least an on and an off state wherein the on state substantially changes the animal interaction device to substantially deter further interaction between the animal and the animal interaction device; wherein the deterrent device is actuated into the on state when the detection device detects a change in the shell.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: January 31, 2017
    Inventors: Ethan Jon Crumlin, Amy Lai Wong
  • Publication number: 20160320602
    Abstract: There is disclosed a novel system and method for achieving ultra-resolution, ultra-wide field-of-view multispectral and hyperspectral holographic microscopy and quantitative phase contrast microscopy. In an embodiment, the method comprises: providing a stationary illumination source; acquiring a plurality of low-resolution holograms of an image subject from different locations utilizing a subpixel sensor-scanning synthetic aperture mechanism whereby a detector scanning translationally, radially and/or rotationally; processing the acquired holograms utilizing a processing algorithm corresponding to the scanning motion of the detector used to acquire the holograms; and reconstructing a subpixel ultra-resolution image of the image subject based on the processed holograms; whereby, a desired synthetic aperture is achieved without loss of resolution. The multispectral and hyperspectral aspect is achieved in the novel system and method by use of different combination of illumination sources (i.e.
    Type: Application
    Filed: December 9, 2015
    Publication date: November 3, 2016
    Inventors: Farnoud KAZEMZADEH, Alexander Sheung Lai WONG
  • Patent number: 9477364
    Abstract: A touchscreen display device may include a capacitive sensor disposed adjacent to a top surface of the display device, and a resistive sensor disposed below the capacitive sensor. A backlight may selectively illuminate a pattern on an inner side of the top surface of the display device, so that the pattern is visible from outside the display device when the backlight is activated, and is not visible when the back light is not activated.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 25, 2016
    Assignee: Google Inc.
    Inventors: Daniel Fourie, Amy Lai Wong, Ken Foo
  • Publication number: 20160132145
    Abstract: A touchscreen display device may include a capacitive sensor disposed adjacent to a top surface of the display device, and a resistive sensor disposed below the capacitive sensor. A backlight may selectively illuminate a pattern on an inner side of the top surface of the display device, so that the pattern is visible from outside the display device when the backlight is activated, and is not visible when the back light is not activated.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 12, 2016
    Inventors: Daniel Fourie, Amy Lai Wong, Ken Foo
  • Publication number: 20160098489
    Abstract: Systems and methods for providing content are disclosed. In an embodiment, information encoding at least one keyword that is associated with first content accessed by a user is received. A search query based at least in part on at least one keyword is executed to identify items. In response to a request from the user to access second content, a response is generated to the request that includes item information associated with at least a subset of the identified items. The response is provided to the user.
    Type: Application
    Filed: December 14, 2015
    Publication date: April 7, 2016
    Inventors: Douglas Tak-Lai Wong, Vivekanand Kirubanandan, Blair L. Hotchkies, Subramanya R. Bhat, Jason P. Patrikios, Paul Daniel Jaye
  • Publication number: 20160065938
    Abstract: There is disclosed a novel system and method for multiview, multispectral, polarimetric, light-field, and high dynamic range imaging in a concurrent manner specifically capturing information at different spectral bands and light polarizations simultaneously. The present system and method is capable of (1) concurrent imaging of multiple spectral bands (including spectral bands beyond the visible region of the electromagnetic spectrum), proportional or greater than the number of filters used in the device, (2) concurrent imaging of multiple light polarizations (Stokes vectors), (3) acquiring images at different point-of-view of the same scene and/or object that allow for topographical reconstruction, (4) concurrent imaging of the multiple depth of fields that allow for light-field imaging, and (5) concurrent imaging of multiple simulated exposures of the detector that allow for high dynamic range imaging, all at the same time using a single sensor in the same imaging system enclosure.
    Type: Application
    Filed: August 30, 2015
    Publication date: March 3, 2016
    Inventors: Farnoud KAZEMZADEH, Alexander Sheung Lai WONG, Shahid Abbas HAIDER
  • Publication number: 20160054420
    Abstract: There is disclosed a novel system and method for improving MRI and DWI image quality and tissue detail and contrast is introduced and referred to in this disclosure as “compensated magnetic resonance imaging” or CMRI in which a compensation function and noise scale factor are determined during a calibration process by acquiring one or more test signals on the MRI system to determine a compensation function and noise scale factor, and signal acquisitions are conducted from a subject, and the signals are then used to reconstruct MRI images by maximizing a quality metric that takes the acquired signals, compensation function, and noise scale factor as part of the input parameters. Advantageously, by taking into a compensation function and a noise scale factor, CMRI can provide significantly improved MRI image quality and tissue detail and contrast.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 25, 2016
    Inventor: Alexander Sheung Lai WONG
  • Publication number: 20150371384
    Abstract: There is disclosed a novel form of imaging referred to in this disclosure as “correlated diffusion imaging” or CDI in which the tissue being imaged is characterized by a joint correlation of diffusion signal attenuation across multiple gradient pulse strengths and timings. Advantageously, by taking into account signal attenuation at different water diffusion motion sensitivities, correlated diffusion imaging can provide significantly improved delineation between cancerous tissue and healthy tissue when compared to existing diffusion imaging modalities. In an embodiment, the method comprises performing quantitative evaluation using receiver operating characteristic (ROC) curve analysis, tissue class separability analysis, and visual assessment to study correlated diffusion imaging for the task of identification of biological tissue of interest.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventor: Alexander Sheung Lai WONG
  • Publication number: 20150361332
    Abstract: In one embodiment, provided are a new class of diarylethene-containing photochromic compounds with the incorporation of silicon- or phosphorus-containing heterocycles into the “ethene” part of the diarylethene backbone that has been shown to be capable of displaying tunable, robust and thermally stable photochromic properties. Also provided are methods for synthesizing these compounds, as well as uses of these compounds as these compounds may be used as the photochromic layer in an optical recording material and other optical functioning devices.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 17, 2015
    Inventors: Vivian Wing-Wah Yam, Jacky Chi-Hung Chan, Hok-Lai Wong, Nathan Man-Wai Wu