Patents by Inventor Huei Meng Chang

Huei Meng Chang 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: 20240155376
    Abstract: 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: Application
    Filed: November 22, 2023
    Publication date: May 9, 2024
    Inventors: Tat-Sing HUEN, Yee Chun LEE, Huei Meng CHANG
  • Patent number: 11871248
    Abstract: A communication network includes nodes communicating over a current generation network, such as 5G and some, or all of the nodes are also capable of communicating over a previous generation network, such as 4G for instance. 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 correlates the first signal and the second signal to generate a simplified signal therefrom. A secondary wireless mesh acts as an overlay control plane via a non-shared non-virtualized external controller.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: January 9, 2024
    Inventor: Huei Meng Chang
  • Publication number: 20230362673
    Abstract: A communication network includes nodes communicating over a current generation network, such as 5G and some, or all of the nodes are also capable of communicating over a previous generation network, such as 4G for instance. 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 correlates the first signal and the second signal to generate a simplified signal therefrom. A secondary wireless mesh acts as an overlay control plane via a non-shared non-virtualized external controller.
    Type: Application
    Filed: April 16, 2019
    Publication date: November 9, 2023
    Inventor: Huei Meng CHANG
  • Publication number: 20230136683
    Abstract: A communication network includes nodes communicating over a current generation network, such as 5G and some, or all of the nodes are also capable of communicating over a previous generation network, such as 4G for instance. 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 correlates the first signal and the second signal to generate a simplified signal therefrom. A secondary wireless mesh acts as an overlay control plane via a non-shared non-virtualized external controller.
    Type: Application
    Filed: April 16, 2019
    Publication date: May 4, 2023
    Inventor: Huei Meng CHANG
  • Patent number: 10875800
    Abstract: 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: Grant
    Filed: March 17, 2014
    Date of Patent: December 29, 2020
    Inventors: Yee Chun Lee, Narayan Raju, Ah Beng Tan, Huei Meng Chang
  • Patent number: 10709298
    Abstract: A fail-safe water saving shower enclosure system includes a showerhead, shower faucet, power adapter, an active infrared sensor, electromagnetic activated fluid valve and shower walls. The infrared sensor installed on one shower wall aims at the opposite shower wall that has the showerhead. The enclosure is electronically partitioned into a restrictive flow zone and free flow zones. When a bather is not present within the restrictive flow zone, the showerhead flows at a free flow rate set at the shower faucet. When the bather does not need water, he simply moves towards the restrictive flow zone. The sensor signals the normally open electromagnetic valve to shut off water from reaching the showerhead. The free flow of water resumes when the bather moves towards the showerhead. The showerhead always receives a full flow of water without the presence of a bather, despite a failure of the disclosed components or power loss.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: July 14, 2020
    Inventor: Huei Meng Chang
  • Patent number: 10376807
    Abstract: 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: Grant
    Filed: October 13, 2018
    Date of Patent: August 13, 2019
    Inventors: Huei Meng Chang, Yee Chun Lee, Narayan D. Raju
  • Patent number: 10298463
    Abstract: 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: Grant
    Filed: October 30, 2017
    Date of Patent: May 21, 2019
    Inventors: Yee Chun Lee, Tat-Sing Huen, Huei Meng Chang
  • Publication number: 20190060778
    Abstract: 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: Application
    Filed: October 13, 2018
    Publication date: February 28, 2019
    Inventors: Huei Meng Chang, Yee Chun Lee, Narayan D. Raju
  • Publication number: 20190045980
    Abstract: A fail-safe water saving shower enclosure system includes a showerhead, shower faucet, power adapter, an active infrared sensor, electromagnetic activated fluid valve and shower walls. The infrared sensor installed on one shower wall aims at the opposite shower wall that has the showerhead. The enclosure is electronically partitioned into a restrictive flow zone and free flow zones. When a bather is not present within the restrictive flow zone, the showerhead flows at a free flow rate set at the shower faucet. When the bather does not need water, he simply moves towards the restrictive flow zone. The sensor signals the normally open electromagnetic valve to shut off water from reaching the showerhead. The free flow of water resumes when the bather moves towards the showerhead. The showerhead always receives a full flow of water without the presence of a bather, despite a failure of the disclosed components or power loss.
    Type: Application
    Filed: February 13, 2018
    Publication date: February 14, 2019
    Inventor: Huei Meng CHANG
  • Patent number: 10118835
    Abstract: 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: Grant
    Filed: January 3, 2013
    Date of Patent: November 6, 2018
    Inventors: Yee Chun Lee, Narayan D Raju, Huei Meng Chang, Ah Beng Tan
  • Publication number: 20180161694
    Abstract: A system and method for controlling a fluid or specifically water treatment system having a plurality of multiple module treatment sites utilizing both low latency local control and higher latency global operational control is provided. Said multiple module treatment site comprises one or more multitude Pulse Effect Distillation™ (PED) modules, one or more pretreatment units, and one or more sludge concentration and storage units. Said control system and method examines sensor signals corresponding to selected PED parameters of the same PED module and takes actions based on measured and estimated PED parameters. The actions taken might comprise one or more of the following: opening or closing the flow control valves for input water, produced water, and brine, activating compressor RPM and torque control, turning on/off the starting/stabilizing heaters, processing and selectively forwarding processed signals and actions.
    Type: Application
    Filed: September 2, 2015
    Publication date: June 14, 2018
    Inventor: Huei Meng CHANG
  • Publication number: 20180123897
    Abstract: 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: Application
    Filed: October 30, 2017
    Publication date: May 3, 2018
    Inventors: Yee Chun Lee, Tat-Sing Huen, Huei Meng Chang
  • Publication number: 20160096741
    Abstract: A system and method for controlling a fluid or specifically water treatment system having a plurality of multiple module treatment sites utilizing both low latency local control and higher latency global operational control is provided. Said multiple module treatment site comprises one or more multitude Pulse Effect Distillation™ (PED) modules, one or more pretreatment units, and one or more sludge concentration and storage units. Said control system and method examines sensor signals corresponding to selected PED parameters of the same PED module and takes actions based on measured and estimated PED parameters.
    Type: Application
    Filed: August 31, 2015
    Publication date: April 7, 2016
    Inventor: Huei Meng CHANG
  • Patent number: 9094119
    Abstract: A communications network comprises: a plurality of nodes, wherein the nodes are interconnected via links; and a gateway node that transmits a signal to one or more of the nodes, wherein certain ones of the nodes receives a transmission of the signal and selected ones of the nodes repeats the transmission of the signal, and wherein a given node of the interconnected nodes receives multiple transmissions of the signal from two or more other nodes of the interconnected nodes.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: July 28, 2015
    Inventors: Tat-Sing Huen, Huei Meng Chang
  • Publication number: 20140263000
    Abstract: 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: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Inventors: Yee Chun Lee, Narayan Raju, Ah Beng Tan, Huei Meng Chang
  • Publication number: 20130175155
    Abstract: 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: Application
    Filed: January 3, 2013
    Publication date: July 11, 2013
    Inventors: Yee Chun Lee, Narayan D. Raju, Huei Meng Chang, Ah Beng Tan
  • Publication number: 20130010675
    Abstract: A communications network comprises: a plurality of nodes, wherein the nodes are interconnected via links; and a gateway node that transmits a signal to one or more of the nodes, wherein certain ones of the nodes receives a transmission of the signal and selected ones of the nodes repeats the transmission of the signal, and wherein a given node of the interconnected nodes receives multiple transmissions of the signal from two or more other nodes of the interconnected nodes.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Applicant: PLEXUS LIGHT NETWORKS, INC.
    Inventors: Tat-Sing Huen, Huei Meng Chang