Patents by Inventor Charles Liu

Charles Liu 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: 20250143650
    Abstract: Techniques for determining stroke risk are provided. In some embodiments, the techniques may involve causing, using one or more light sources disposed on a headset worn by a user, light to be emitted into the head of the user. The techniques may involve obtaining, using one or more light detectors disposed on the headset, information indicative of light reflected from one more structures within the head, wherein a portion of the obtained information spans a time period during which the user was holding their breath. The techniques may involve based on the obtained information, determining one or more cerebral blood metrics. The techniques may involve providing a representation of the one or more cerebral blood metrics as input to a trained machine learning model, and determining a likelihood the user will experience a stroke over a predetermined future time period based on an output of the trained machine learning model.
    Type: Application
    Filed: November 1, 2024
    Publication date: May 8, 2025
    Inventors: Yu Xi Huang, Simon Mahler, Changhuei Yang, Charles Liu
  • Publication number: 20240389246
    Abstract: Embodiments include a power supply that includes a non-waterproof outer housing and a plurality of waterproof electronics modules (WEMs) disposed inside of the outer housing. The WEMs include a battery pack. The power supply also includes a first waterproof fan affixed in a first opening of the outer housing and configured to draw air from outside to inside of the outer housing, and a second waterproof fan affixed in a second opening of the outer housing and configured to draw air from inside to outside. Other embodiments include a WEM configured for use inside of a non-waterproof power supply. The WEM includes a waterproof shell comprising first and second pieces of a material that is waterproof and heat-conductive and a waterproof seal or gasket disposed between the first and second pieces. The WEM also comprises one or more electronic components or an electronic assembly, encased within the shell.
    Type: Application
    Filed: May 15, 2023
    Publication date: November 21, 2024
    Inventors: Charles Liu, Guang Ouyang, Qingyun Chen
  • Publication number: 20240315665
    Abstract: A cranial implant that facilitates functional ultrasound imaging is disclosed. The example cranial implant replaces a section of a skull. The cranial implant in includes a support section shaped to replace a removed section of the skull. The implant includes a window of sonolucent material allowing functional ultrasound imaging through an ultrasound probe on the window. The window is shaped to allow access to a region of interest in the brain from the ultrasound probe.
    Type: Application
    Filed: June 5, 2024
    Publication date: September 26, 2024
    Inventors: Sumner L. Norman, Claire Rabut, Whitney S. Griggs, Richard A. Andersen, Mikhail G. Shapiro, Charles Liu
  • Patent number: 11661029
    Abstract: Embodiments include methods for a battery management system (BMS) for a battery pack configured to operate with a host platform (e.g., vehicle, charging station, diagnostic station, etc.). Such methods include authenticating the host platform based on communication between a first short-range wireless transceiver (SRWT) in the BMS and a compatible second SRWT in the host platform. Such methods include, based on the result of the authentication, regulating the following between the host platform and the battery pack: flow of energy, and communication of control and status information via the first SRWT. Other embodiments include BMS having a first SWRT and a controller configured to perform operations corresponding to the exemplary methods.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: May 30, 2023
    Assignee: TWS Technology(Guangzhou) Limited
    Inventor: Charles Liu
  • Patent number: 11592306
    Abstract: Embodiments include methods, for a wireless device, to determine one or more preferred routes for an electric vehicle powered by a battery. Such methods include determining multiple candidate routes from a starting point to a destination. Each candidate route includes one or more segments, each segment associated with a slope and a distance. Such methods include, for each candidate route, estimating a route battery discharge amount and a route duration of travel based on a discharge profile for the battery and the slopes and distances associated with the segments of the candidate route. Such methods include selecting one or more preferred routes, from the candidate routes, based on a current state of charge for the battery, the route battery discharge amounts, and the route durations of travel. Other embodiments include wireless devices configured to perform such methods, and electric vehicles operably coupled to such wireless devices.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: February 28, 2023
    Assignee: TWS Technology(Guangzhou) Limited
    Inventor: Charles Liu
  • Patent number: 11278226
    Abstract: A fully-implantable brain-computer interface cyber-physical system capable of acquiring and analyzing electrocorticogram (“ECoG”) signals, recorded directly from the subdural space of the brain, to enable direct brain control of a prosthetic (e.g., a robotic gait exoskeleton or a functional electrical stimulation (“FES”) system) is disclosed. The present system comprises a plurality of electrodes, for acquiring the ECoG signals, and a digital signal processor (“DSP”) for deriving a plurality of real-time commands from the ECoG signals. These real-time commands may then be wirelessly transmitted to the prosthetic for execution. Further, to avoid wireless data transmission of the ECoG signals from the plurality of electrodes to the DSP, which would expose the brain, skull, and scalp tissue to potentially harmful radio frequencies, a subcutaneous tunneling cable operatively couples the plurality of electrodes and the DSP.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: March 22, 2022
    Assignees: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Payam Heydari, Zoran Nenadic, An Do, Charles Liu
  • Publication number: 20220080943
    Abstract: Embodiments include methods for a wireless device configured for use with a vehicle powered by a battery. Such methods include receiving first status information associated with the battery via a first short-range wireless connection and determining location information associated with the vehicle. Such methods include transmitting the location information and the first status information to a management server via the wide-area wireless network. Other embodiments include complementary methods for a management server to manage one or more vehicles powered by batteries. Such methods include determining first control information for the battery based on the location information and the first status information and transmitting the first control information to the wireless device via the wide-area wireless network. Other embodiments include wireless devices and management servers configured to perform such methods.
    Type: Application
    Filed: June 21, 2021
    Publication date: March 17, 2022
    Inventor: Charles Liu
  • Publication number: 20210402954
    Abstract: Embodiments include methods for a battery management system (BMS) for a battery pack configured to operate with a host platform (e.g., vehicle, charging station, diagnostic station, etc.). Such methods include authenticating the host platform based on communication between a first short-range wireless transceiver (SRWT) in the BMS and a compatible second SRWT in the host platform. Such methods include, based on the result of the authentication, regulating the following between the host platform and the battery pack: flow of energy, and communication of control and status information via the first SRWT. Other embodiments include BMS having a first SWRT and a controller configured to perform operations corresponding to the exemplary methods.
    Type: Application
    Filed: June 3, 2021
    Publication date: December 30, 2021
    Inventor: Charles Liu
  • Publication number: 20210389145
    Abstract: Embodiments include methods, for a wireless device, to determine one or more preferred routes for an electric vehicle powered by a battery. Such methods include determining multiple candidate routes from a starting point to a destination. Each candidate route includes one or more segments, each segment associated with a slope and a distance. Such methods include, for each candidate route, estimating a route battery discharge amount and a route duration of travel based on a discharge profile for the battery and the slopes and distances associated with the segments of the candidate route. Such methods include selecting one or more preferred routes, from the candidate routes, based on a current state of charge for the battery, the route battery discharge amounts, and the route durations of travel. Other embodiments include wireless devices configured to perform such methods, and electric vehicles operably coupled to such wireless devices.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 16, 2021
    Inventor: Charles Liu
  • Patent number: 10752987
    Abstract: Disclosed is a substrate processing system which enables combined static and pass-by processing. Also, a system architecture is provided, which reduces footprint size. The system is constructed such that the substrates are processed therein vertically, and each chamber has a processing source attached to one sidewall thereof, wherein the other sidewall backs to a complementary processing chamber. The chamber system can be milled from a single block of metal, e.g., aluminum, wherein the block is milled from both sides, such that a wall remains and separates each two complementary processing chambers.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: August 25, 2020
    Assignee: INTEVAC, INC.
    Inventors: Patrick Leahey, Eric Lawson, Charles Liu, Terry Bluck, Kevin P. Fairbairn, Robert L. Ruck, Samuel D. Harkness, IV
  • Patent number: 10560571
    Abstract: A technique for obtaining caller-originated alert signals in IP-based communication sessions is disclosed. According to one embodiment, the technique may be realized as a method comprising the steps of: receiving, from a first user equipment and via a first communication channel, a request to initiate a communication session, the request being received at a second user equipment; in response to the request, causing a phonepage server to transmit, via a second communication channel, a caller-originated alert to the second user equipment; and rendering the caller-originated alert to alert a user associated with the second user equipment.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: February 11, 2020
    Assignee: Sony Corporation
    Inventors: L. Scott Bloebaum, Charles Liu
  • Patent number: 10398795
    Abstract: A method and apparatus for decontaminating substantially enclosed environments by using ultrasonic cavitation of a cleaning fluid to produce a low pressure, low air flow mist that can be activated by a nonthermal plasma actuator to create a cloud of activated hydroxyl species with the capacity to decontaminate articles, open surfaces or substantially enclosed spaces of pathogens, including bacteria, and other pathogenic microorganisms. An automated system and related non-transitory computer medium are also disclosed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: September 3, 2019
    Assignee: TOMI ENVIRONMENTAL SOLUTIONS, INC.
    Inventors: Halden Stuart Shane, Johnny Sullivan Cato, Charles Liu
  • Patent number: 10391188
    Abstract: A method and apparatus for decontaminating substantially enclosed environments by using ultrasonic cavitation of a cleaning fluid to produce a low pressure, low air flow mist that can be activated by a nonthermal plasma actuator to create a cloud of activated hydroxyl species with the capacity to decontaminate articles, open surfaces or substantially enclosed spaces of pathogens, including bacteria, and other pathogenic microorganisms. An automated system and related non-transitory computer medium are also disclosed.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 27, 2019
    Assignee: TOMI ENVIRONMENTAL SOLUTIONS, INC.
    Inventors: Halden Stuart Shane, Johnny Sullivan Cato, Charles Liu
  • Publication number: 20190231204
    Abstract: A fully-implantable brain-computer interface cyber-physical system capable of acquiring and analyzing electrocorticogram (“ECoG”) signals, recorded directly from the subdural space of the brain, to enable direct brain control of a prosthetic (e.g., a robotic gait exoskeleton or a functional electrical stimulation (“FES”) system) is disclosed. The present system comprises a plurality of electrodes, for acquiring the ECoG signals, and a digital signal processor (“DSP”) for deriving a plurality of real-time commands from the ECoG signals. These real-time commands may then be wirelessly transmitted to the prosthetic for execution. Further, to avoid wireless data transmission of the ECoG signals from the plurality of electrodes to the DSP, which would expose the brain, skull, and scalp tissue to potentially harmful radio frequencies, a subcutaneous tunneling cable operatively couples the plurality of electrodes and the DSP.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Payam Heydari, Zoran Nenadic, An Do, Charles Liu
  • Publication number: 20190201565
    Abstract: A method and apparatus for decontaminating substantially enclosed environments by using ultrasonic cavitation of a cleaning fluid to produce a low pressure, low air flow mist that can be activated by a nonthermal plasma actuator to create a cloud of activated hydroxyl species with the capacity to decontaminate articles, open surfaces or substantially enclosed spaces of pathogens, including bacteria, and other pathogenic microorganisms. An automated system and related non-transitory computer medium are also disclosed.
    Type: Application
    Filed: September 11, 2018
    Publication date: July 4, 2019
    Inventors: Halden Stuart SHANE, Johnny Sullivan CATO, Charles LIU
  • Publication number: 20190201564
    Abstract: A method and apparatus for decontaminating substantially enclosed environments by using ultrasonic cavitation of a cleaning fluid to produce a low pressure, low air flow mist that can be activated by a nonthermal plasma actuator to create a cloud of activated hydroxyl species with the capacity to decontaminate articles, open surfaces or substantially enclosed spaces of pathogens, including bacteria, and other pathogenic microorganisms. An automated system and related non-transitory computer medium are also disclosed.
    Type: Application
    Filed: December 29, 2017
    Publication date: July 4, 2019
    Inventors: Halden Stuart SHANE, Johnny Sullivan CATO, Charles LIU
  • Publication number: 20180171463
    Abstract: Disclosed is a substrate processing system which enables combined static and pass-by processing. Also, a system architecture is provided, which reduces footprint size. The system is constructed such that the substrates are processed therein vertically, and each chamber has a processing source attached to one sidewall thereof, wherein the other sidewall backs to a complementary processing chamber. The chamber system can be milled from a single block of metal, e.g., aluminum, wherein the block is milled from both sides, such that a wall remains and separates each two complementary processing chambers.
    Type: Application
    Filed: February 19, 2018
    Publication date: June 21, 2018
    Inventors: Patrick Leahey, Eric Lawson, Charles Liu, Terry Bluck, Kevin P. Fairbairn, Robert L. Ruck, Samuel D. Harkness, IV
  • Patent number: 9914994
    Abstract: Disclosed is a substrate processing system which enables combined static and pass-by processing. Also, a system architecture is provided, which reduces footprint size. The system is constructed such that the substrates are processed therein vertically, and each chamber has a processing source attached to one sidewall thereof, wherein the other sidewall backs to a complementary processing chamber. The chamber system can be milled from a single block of metal, e.g., aluminum, wherein the block is milled from both sides, such that a wall remains and separates each two complementary processing chambers.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: March 13, 2018
    Assignee: INTEVAC, INC.
    Inventors: Patrick Leahey, Eric Lawson, Charles Liu, Terry Bluck, Kevin P. Fairbairn, Robert L. Ruck, Samuel D. Harkness, IV
  • Patent number: 9896758
    Abstract: A physical vapor deposition (PVD) chamber for depositing a transparent and clear hydrogenated carbon, e.g., hydrogenated diamond-like carbon, film. A chamber body is configured for maintaining vacuum condition therein, the chamber body having an aperture on its sidewall. A plasma cage having an orifice is attached to the sidewall, such that the orifice overlaps the aperture. Two sputtering targets are situated on cathodes inside the plasma cage and are oriented opposite each other and configured to sustain plasma there-between and confined inside the plasma cage. The plasma inside the cage sputters material from the targets, which then passes through the orifice and aperture and lands on the substrate. The substrate is moved continuously in a pass-by fashion during the process.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 20, 2018
    Assignee: INTEVAC, INC.
    Inventors: David Fang Wei Chen, David Ward Brown, Charles Liu, Samuel D. Harkness, IV
  • Publication number: 20180013883
    Abstract: A technique for obtaining caller-originated alert signals in IP-based communication sessions is disclosed. According to one embodiment, the technique may be realized as a method comprising the steps of: receiving, from a first user equipment and via a first communication channel, a request to initiate a communication session, the request being received at a second user equipment; in response to the request, causing a phonepage server to transmit, via a second communication channel, a caller-originated alert to the second user equipment; and rendering the caller-originated alert to alert a user associated with the second user equipment.
    Type: Application
    Filed: September 20, 2017
    Publication date: January 11, 2018
    Inventors: L. Scott Bloebaum, Charles Liu