Patents by Inventor Yee-Chun Lee
Yee-Chun Lee 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).
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Publication number: 20250097726Abstract: A system comprises a wireless network for wirelessly communicating with a mobile handset, where the mobile handset comprises a plurality of antennas that point in a plurality of different directions. The wireless network comprises a plurality of nodes which include different base stations that wirelessly connect with the mobile handset via the antennas so that data is communicable between the mobile handset and the different base stations as different wireless signals and in accordance with directionality of the antennas. The data comprises a plurality of streams that are encoded by the different wireless signals. The nodes further include repeater nodes that wirelessly communicate the data as millimeter wave wireless signals that propagate through the wireless network to/from the different base stations via multiple paths within the wireless network, where the millimeter wave wireless signals include repeated versions of the data.Type: ApplicationFiled: December 2, 2024Publication date: March 20, 2025Inventors: Tat-Sing HUEN, Yee Chun LEE, Huei Meng CHANG
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Patent number: 12160754Abstract: A system for wireless data communication comprises first and second wireless networks. The first wireless network comprises nodes that receive and transmit wireless signals that exhibit a first frequency, wherein nodes of the first wireless network include first, second, and third repeater nodes. The second wireless network comprises nodes that receive and transmit wireless signals that exhibit a second frequency that is lower than the first frequency. The second wireless network is configured to serve as an overlay out-of-band control plane for the first wireless network. The third repeater node uses a digital IIR filter to recover and relay a data signal encoded by first and second wireless signals that are received by the third repeater node from the first and second repeater nodes. The first wireless network can be a current generation network (e.g., 5G) while the second wireless network can be a previous generation network (e.g., 4G).Type: GrantFiled: November 22, 2023Date of Patent: December 3, 2024Inventors: Tat-Sing Huen, Yee Chun Lee, Huei Meng Chang
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Publication number: 20240155376Abstract: A system for wireless data communication comprises first and second wireless networks. The first wireless network comprises nodes that receive and transmit wireless signals that exhibit a first frequency, wherein nodes of the first wireless network include first, second, and third repeater nodes. The second wireless network comprises nodes that receive and transmit wireless signals that exhibit a second frequency that is lower than the first frequency. The second wireless network is configured to serve as an overlay out-of-band control plane for the first wireless network. The third repeater node uses a digital IIR filter to recover and relay a data signal encoded by first and second wireless signals that are received by the third repeater node from the first and second repeater nodes. The first wireless network can be a current generation network (e.g., 5G) while the second wireless network can be a previous generation network (e.g., 4G).Type: ApplicationFiled: November 22, 2023Publication date: May 9, 2024Inventors: Tat-Sing HUEN, Yee Chun LEE, Huei Meng CHANG
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Patent number: 11242125Abstract: An airship dynamic adaptive harness is provided to stabilize airships and particularly a tethered aerostat in high winds and atmospheric changes. A novel adaptive device accommodates the supply of a lift gas and simultaneously controls opposing cables in a tethered harness with a cascade control system that provides an immediate and particularly the dynamic control of roll, yaw and particularly the pitch of the aerostat in response to real time environmental flight conditions and impart stability to the airship in high winds using a stability zone geometric suspension control system and enhance the duration of in flight missions. A lifting gas replenishment system and particularly a ground based lifting gas replenishment system adds long duration deployment to the dynamic adaptability to high wind conditions for long term deployment.Type: GrantFiled: October 9, 2018Date of Patent: February 8, 2022Assignee: ONWARD TECHNOLOGIES, LLCInventor: Yee Chun Lee
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Patent number: 10875800Abstract: A liquid filtration device comprises: filter modules, wherein each of the filter modules has a layer for a bio-film and a first group of particles; and a biobridge, wherein the biobridge is coupled to the filter modules, wherein an input liquid is disposed on the filter modules, and wherein for each of the filter modules the input liquid is filtered by passing through the respective layer and the respective first group of particles.Type: GrantFiled: March 17, 2014Date of Patent: December 29, 2020Inventors: Yee Chun Lee, Narayan Raju, Ah Beng Tan, Huei Meng Chang
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Publication number: 20200108903Abstract: An airship dynamic adaptive harness is provided to stabilize airships and particularly a tethered aerostat in high winds and atmospheric changes. A novel adaptive device accommodates the supply of a lift gas and simultaneously controls opposing cables in a tethered harness with a cascade control system that provides an immediate and particularly the dynamic control of roll, yaw and particularly the pitch of the aerostat in response to real time environmental flight conditions and impart stability to the airship in high winds using a stability zone geometric suspension control system and enhance the duration of in flight missions. A lifting gas replenishment system and particularly a ground based lifting gas replenishment system adds long duration deployment to the dynamic adaptability to high wind conditions for long term deployment.Type: ApplicationFiled: October 9, 2018Publication date: April 9, 2020Inventor: YEE CHUN LEE
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Patent number: 10411532Abstract: A motor is provided that is capable of electronically switching between operating in a high torque mode and a low torque mode. The high torque mode may be switched reluctance mode and the low torque mode may be synchronous reluctance mode. The motor has a stator having two sets of armature windings, and a rotor having two sets of flux barriers each adapted to shape a magnetic flux distribution generated by a corresponding one of the sets of armature windings. The stator may comprise a plurality of teeth circumferentially spaced apart from one another around a rotation axis of the motor. The armature windings may include switched reluctance armature windings, each wrapped around a single stator tooth, and synchronous reluctance windings, each wrapped around multiple adjacent stator teeth. An inverter and controller may be connected to each set of armature windings for controlling the electronic switching of the armature windings.Type: GrantFiled: October 27, 2014Date of Patent: September 10, 2019Assignee: Moovee Innovations Inc.Inventors: Yee-Chun Lee, Donald Ho-Yin Wong
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Patent number: 10376807Abstract: An apparatus for generating purified liquid from an input liquid, comprises, an evaporation chamber flooded with the input liquid and wherein the evaporation chamber generates saturated gases and comprises a shared wall with the condensation chamber and wherein the evaporation chamber is configured to generate evaporation cavities and condensation cavities on respective sides of the shared wall for a 2-phase counter flow of a liquid phase component and a gaseous phase component in composite flows for a 2-phase to 2-phase direct latent heat exchange. A condensation chamber has channels disposed in the input liquid, wherein liquid-saturated gases are generated therefrom in the evaporation chamber. The apparatus is operated as a four-port counter-flow heat exchanger where two different fluids are exchanging heat based on the inlet ports of both fluids being on opposite sides and the outlet ports of both fluids are also on opposite sides of the evaporator and condenser.Type: GrantFiled: October 13, 2018Date of Patent: August 13, 2019Inventors: Huei Meng Chang, Yee Chun Lee, Narayan D. Raju
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Patent number: 10298463Abstract: A communication network includes nodes. The nodes are capable of communicating over a current generation network, which will include 5G before long. One, some, or all of the nodes are also capable of communicating over a previous generation network, to which 4G will be relegated before long. A third node receives a first signal from a first node over the current generation network, a second signal that is a retransmission of the first signal from a second node over the current generation network, and network dimensional parameters from the first node and/or the second node over the previous generation network. The network dimensional parameters enable the third node to determine precise locations of the first node and the second node. Using a function of the network dimensional parameters, the third node can correlate the first signal and the second signal and generate a simplified signal therefrom.Type: GrantFiled: October 30, 2017Date of Patent: May 21, 2019Inventors: Yee Chun Lee, Tat-Sing Huen, Huei Meng Chang
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Publication number: 20190060778Abstract: An apparatus for generating purified liquid from an input liquid, comprises, an evaporation chamber flooded with the input liquid and wherein the evaporation chamber generates saturated gases and comprises a shared wall with the condensation chamber and wherein the evaporation chamber is configured to generate evaporation cavities and condensation cavities on respective sides of the shared wall for a 2-phase counter flow of a liquid phase component and a gaseous phase component in composite flows for a 2-phase to 2-phase direct latent heat exchange. A condensation chamber has channels disposed in the input liquid, wherein liquid-saturated gases are generated therefrom in the evaporation chamber. The apparatus is operated as a four-port counter-flow heat exchanger where two different fluids are exchanging heat based on the inlet ports of both fluids being on opposite sides and the outlet ports of both fluids are also on opposite sides of the evaporator and condenser.Type: ApplicationFiled: October 13, 2018Publication date: February 28, 2019Inventors: Huei Meng Chang, Yee Chun Lee, Narayan D. Raju
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Patent number: 10118835Abstract: An apparatus for generating purified liquid from an input liquid, comprises, an evaporation chamber, wherein the evaporation chamber is flooded with the input liquid; and a condensation chamber having channels, wherein the channels are disposed in the input liquid, wherein liquid-saturated gases are generated from the input liquid in the evaporation chamber, wherein the liquid-saturated gases are guided into a first end of the channels, and wherein the purified liquid is outputted at a second end of the channels.Type: GrantFiled: January 3, 2013Date of Patent: November 6, 2018Inventors: Yee Chun Lee, Narayan D Raju, Huei Meng Chang, Ah Beng Tan
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Publication number: 20180123897Abstract: A communication network includes nodes. The nodes are capable of communicating over a current generation network, which will include 5G before long. One, some, or all of the nodes are also capable of communicating over a previous generation network, to which 4G will be relegated before long. A third node receives a first signal from a first node over the current generation network, a second signal that is a retransmission of the first signal from a second node over the current generation network, and network dimensional parameters from the first node and/or the second node over the previous generation network. The network dimensional parameters enable the third node to determine precise locations of the first node and the second node. Using a function of the network dimensional parameters, the third node can correlate the first signal and the second signal and generate a simplified signal therefrom.Type: ApplicationFiled: October 30, 2017Publication date: May 3, 2018Inventors: Yee Chun Lee, Tat-Sing Huen, Huei Meng Chang
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Patent number: 9708049Abstract: Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.Type: GrantFiled: July 15, 2013Date of Patent: July 18, 2017Inventor: Yee-Chun Lee
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Publication number: 20150171674Abstract: A motor is provided that is capable of electronically switching between operating in a high torque mode and a low torque mode. The high torque mode may be switched reluctance mode and the low torque mode may be synchronous reluctance mode. The motor has a stator having two sets of armature windings, and a rotor having two sets of flux barriers each adapted to shape a magnetic flux distribution generated by a corresponding one of the sets of armature windings. The stator may comprise a plurality of teeth circumferentially spaced apart from one another around a rotation axis of the motor. The armature windings may include switched reluctance armature windings, each wrapped around a single stator tooth, and synchronous reluctance windings, each wrapped around multiple adjacent stator teeth. An inverter and controller may be connected to each set of armature windings for controlling the electronic switching of the armature windings.Type: ApplicationFiled: October 27, 2014Publication date: June 18, 2015Inventors: Yee-Chun LEE, Donald Ho-Yin WONG
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Publication number: 20140263000Abstract: A liquid filtration device comprises: filter modules, wherein each of the filter modules has a layer for a bio-film and a first group of particles; and a biobridge, wherein the biobridge is coupled to the filter modules, wherein an input liquid is disposed on the filter modules, and wherein for each of the filter modules the input liquid is filtered by passing through the respective layer and the respective first group of particles.Type: ApplicationFiled: March 17, 2014Publication date: September 18, 2014Inventors: Yee Chun Lee, Narayan Raju, Ah Beng Tan, Huei Meng Chang
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Publication number: 20130299629Abstract: Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.Type: ApplicationFiled: July 15, 2013Publication date: November 14, 2013Inventor: YEE-CHUN LEE
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Patent number: 8485465Abstract: Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.Type: GrantFiled: December 23, 2011Date of Patent: July 16, 2013Assignee: StratoComm CorporationInventor: Yee-Chun Lee
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Publication number: 20130175155Abstract: An apparatus for generating purified liquid from an input liquid, comprises, an evaporation chamber, wherein the evaporation chamber is flooded with the input liquid; and a condensation chamber having channels, wherein the channels are disposed in the input liquid, wherein liquid-saturated gases are generated from the input liquid in the evaporation chamber, wherein the liquid-saturated gases are guided into a first end of the channels, and wherein the purified liquid is outputted at a second end of the channels.Type: ApplicationFiled: January 3, 2013Publication date: July 11, 2013Inventors: Yee Chun Lee, Narayan D. Raju, Huei Meng Chang, Ah Beng Tan
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Patent number: 8286909Abstract: Systems, method, devices and apparatus are provided for reducing drag and increasing the flight efficiency characteristics of aircraft and airships including hybrid aircraft utilizing distributed boundary layer control and propulsion devices. Boundary layer control includes passive systems such as riblet films and boundary layer propulsion devices having a divided and distributed propulsion system disposed in the curved aft sections of aircraft and airships including hybrid aircraft susceptible to boundary layer drag due to degree of curvatures, speed and density of the surrounding air. Distributed propulsion devices include constructing propellers and riblets from shape memory alloys, piezoelectric materials and electroactive polymer (EAP) materials to change the shape and length of the distributed propulsion device.Type: GrantFiled: February 8, 2008Date of Patent: October 16, 2012Assignee: StratoComm CorporationInventor: Yee-Chun Lee
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Patent number: 8274495Abstract: A touch screen that employs a lens-less linear IR sensor array and an IR light source from a single location at the periphery of the screen to illuminate one or more objects proximate to the screen surface and detect light reflected from such objects. The sensor array is paired with a proximal grid-like barrier/reflector to create Moiré patterns on the sensor array. Digital signal processing converts such patterns into discrete Fourier transforms. The peaks of the lower order discrete Fourier spectrum as well as the complex phases of the lower order peaks can be used to determine the locations of the objects proximal to the screen accurately. A small number of pressure or surface acoustic sensors at the periphery of the screen are utilized to improve positioning reliability by providing redundant positioning information and registering physical contacts with the screen.Type: GrantFiled: May 25, 2010Date of Patent: September 25, 2012Assignee: General Display, Ltd.Inventor: Yee Chun Lee