Patents by Inventor Zhi Qi

Zhi Qi 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).

  • Patent number: 11848649
    Abstract: An amplifier includes a first stage and a second stage. The first stage includes a floating current source to maintain current within a threshold. The first stage also includes a local common mode feedback configured to provide gain to an input signal. Moreover, the second stage includes a driver that provides a load current to a load coupled to the amplifier.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: December 19, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu
  • Patent number: 11804255
    Abstract: A memory device includes a voltage generator configured to generate a reference voltage for transmission to at least one component of the memory device. The voltage generator includes a first input to receive a first signal having a first voltage value. The voltage generator also includes a second input to receive a second signal having a second voltage value. The voltage generator further includes a first circuit configured to generate third voltage and a second circuit coupled to the first circuit to receive the third voltage value, wherein the second circuit receives the first signal and the second signal and is configured to utilize the third voltage value to facilitate comparison of the first voltage value and the second voltage value to generate an output voltage.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: October 31, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu
  • Publication number: 20230318536
    Abstract: An amplifier includes a first stage and a second stage. The first stage includes a floating current source to maintain current within a threshold. The first stage also includes a local common mode feedback configured to provide gain to an input signal. Moreover, the second stage includes a driver that provides a load current to a load coupled to the amplifier.
    Type: Application
    Filed: April 1, 2022
    Publication date: October 5, 2023
    Inventors: Zhi Qi Huang, Wei Lu Chu
  • Publication number: 20230178139
    Abstract: A system (100) for providing a timing signal with tunable temperature dependency in an electronic device may include a timing circuit (102) and an initial setting circuit (104). The timing circuit (102) may include a delay stage (106) and a gate stage (108). The delay stage (106) may be configured to receive an input signal and to produce a delayed signal by introducing a delay to the input signal. The gate stage (108) may be configured to receive the delayed signal and a threshold setting signal, to produce an output signal using the delayed signal and a logic threshold, and to set an initial value of the logic threshold according to the threshold setting signal. The initial setting circuit (104) may be configured to allow the threshold setting signal to be tuned for providing the time delay with a specified temperature dependency.
    Type: Application
    Filed: May 29, 2020
    Publication date: June 8, 2023
    Inventors: Si Hong Kim, Ki-Jun Nam, Zhi Qi Huang, John David Porter
  • Patent number: 11632084
    Abstract: Methods, systems, and devices for operating an amplifier with a controllable pull-down capability are described. A memory device may include a memory array and a power circuit that generates an internal signal for components in the memory array. The power circuit may include an amplifier and a power transistor that is coupled with the amplifier. A pull-down capability of the amplifier may be controllable using an external signal that is based on a difference between a reference signal and the internal signal. The power circuit may also include a comparator that is coupled with the amplifier and configured to compare the reference signal and the internal signal. Components of the comparator may be integrated with components of the amplifier, may share a bias circuit, and may use nodes within the amplifier to control the comparator. A signal output by the comparator may control the pull-down capability of the amplifier.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: April 18, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Wei Lu Chu, Zhi Qi Huang, Dong Pan
  • Patent number: 11587602
    Abstract: Methods, systems, and devices for timing signal delay compensation in a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. In accordance with examples as disclosed herein, a memory device may include delay components having a variable and configurable impedance, where the configurable impedance may be based at least in part on a configuration signal generated at the memory device. A configuration signal may be generated based on fabrication characteristics of the memory device, or based on operating conditions of the memory device, or various combinations thereof.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: February 21, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Publication number: 20230044187
    Abstract: A memory device includes a voltage generator configured to generate a reference voltage for transmission to at least one component of the memory device. The voltage generator includes a first input to receive a first signal having a first voltage value. The voltage generator also includes a second input to receive a second signal having a second voltage value. The voltage generator further includes a first circuit configured to generate third voltage and a second circuit coupled to the first circuit to receive the third voltage value, wherein the second circuit receives the first signal and the second signal and is configured to utilize the third voltage value to facilitate comparison of the first voltage value and the second voltage value to generate an output voltage.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 9, 2023
    Inventors: Zhi Qi Huang, Wei Lu Chu
  • Patent number: 11571258
    Abstract: An artificial potential field path planning method and an apparatus based on obstacle classification solve the problem of path and motion uncertainty in steering a flexible needle in soft tissue. The apparatus includes an image sensing system, a control module, an execution system and an upper PC. Using the apparatus, the method includes: the image sensing system obtains real-time images of the puncture environment, identifies a target and obstacles from the real-time images, classifies the obstacles, and calculates total potential energy of points in the current environment based on artificial potential field. With a curvature constraint and an optimization index for the flexible needle, the path planning module carries out static path planning to obtain an initial path and the needle entry point, then conducts dynamic path planning to determine the path for steering the flexible needle in the soft tissue accordingly.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: February 7, 2023
    Assignees: BEIHANG UNIVERSITY, SHENZHEN FITCARE ELECTRONICS CO., LTD.
    Inventors: Hui Zhang, Zhi Qi, Yuedong Cao, Xiaobao Chen
  • Publication number: 20230018673
    Abstract: RF devices, and more particularly RF devices with photo-imageable polymers for high frequency enhancements and related methods are disclosed. High frequency enhancements are realized by providing air cavities registered with one or more operating portions of RF devices. The air cavities are formed by photo-imageable polymer structures that provide separation from high dielectric constant materials associated with sealing materials, such as overmold materials, that are typically used for environmental and/or mechanical protection in RF devices. Related methods are disclosed that include forming the photo-imageable polymer structures and corresponding air cavities through various lamination and patterning of photo-imageable polymer layers. Further radiation hardening steps are disclosed that may be applied to the photo-imageable polymer structures after air cavities are formed to promote improved structural integrity of the air cavities during subsequent fabrication steps and during operation of the RF devices.
    Type: Application
    Filed: July 16, 2021
    Publication date: January 19, 2023
    Inventors: Christo Bojkov, Zhi-Qi Li, Michael Roberg, Harold Isom
  • Publication number: 20220200538
    Abstract: Methods, systems, and devices for operating an amplifier with a controllable pull-down capability are described. A memory device may include a memory array and a power circuit that generates an internal signal for components in the memory array. The power circuit may include an amplifier and a power transistor that is coupled with the amplifier. A pull-down capability of the amplifier may be controllable using an external signal that is based on a difference between a reference signal and the internal signal. The power circuit may also include a comparator that is coupled with the amplifier and configured to compare the reference signal and the internal signal. Components of the comparator may be integrated with components of the amplifier, may share a bias circuit, and may use nodes within the amplifier to control the comparator. A signal output by the comparator may control the pull-down capability of the amplifier.
    Type: Application
    Filed: December 18, 2020
    Publication date: June 23, 2022
    Inventors: Wei Lu Chu, Zhi Qi Huang, Dong Pan
  • Patent number: 11342906
    Abstract: Devices for generating a delay output signal are disclosed. A device may include a first delay circuit and a second delay circuit coupled in series between a first node and a second node in a delay path for the device, and having a third node therebetween. The device may also include a third circuit coupled to the third node and configured to charge the third node responsive to detecting a signal has passed through the first node and the third node. Associated semiconductor devices and methods are also disclosed.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: May 24, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Hiroshi Akamatsu, Zhi Qi Huang
  • Publication number: 20220157365
    Abstract: Methods, systems, and devices for timing signal delay for a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. A memory device may include delay components having a configurable impedance based at least in part on one or more fabrication characteristics of the memory device, one or more operating conditions of the memory device, one or more bias voltages, or a combination thereof.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Patent number: 11335396
    Abstract: Methods, systems, and devices for timing signal delay for a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. A memory device may include delay components having a configurable impedance based at least in part on one or more fabrication characteristics of the memory device, one or more operating conditions of the memory device, one or more bias voltages, or a combination thereof.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: May 17, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Patent number: 11325879
    Abstract: Certain bleached earths improve methods of fatty acid purification.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: May 10, 2022
    Assignee: The Procter & Gamble Company
    Inventors: Rajesh Kumar Balasubramanian, Mohammad Rasoul Madadi, Jovina Zhi Qi Tan
  • Publication number: 20220076720
    Abstract: Methods, systems, and devices for timing signal delay compensation in a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. In accordance with examples as disclosed herein, a memory device may include delay components having a variable and configurable impedance, where the configurable impedance may be based at least in part on a configuration signal generated at the memory device. A configuration signal may be generated based on fabrication characteristics of the memory device, or based on operating conditions of the memory device, or various combinations thereof.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Patent number: 11227650
    Abstract: An electronic device includes a first input that receives an input signal when the electronic device is in operation, a long L gate comprising a long L transistor, a first activation transistor coupled to a gate of the long L transistor, and a second activation transistor coupled to the gate of the long L transistor. The electronic device also includes a switch directly coupled to a second input of the long L gate, a path directly coupled to a first output of the long L gate, a capacitor coupled to the path, and a second output that when in operation transmits an output signal as a delayed signal with respect to the input signal.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: January 18, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Patent number: 11200927
    Abstract: Methods, systems, and devices for timing signal delay compensation in a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. In accordance with examples as disclosed herein, a memory device may include delay components having a variable and configurable impedance, where the configurable impedance may be based at least in part on a configuration signal generated at the memory device. A configuration signal may be generated based on fabrication characteristics of the memory device, or based on operating conditions of the memory device, or various combinations thereof.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: December 14, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Publication number: 20210319816
    Abstract: Methods, systems, and devices for timing signal delay compensation in a memory device are described. In some memory devices, operations for accessing memory cells may be performed with timing that is asynchronous relative to an input signal. To support asynchronous timing, a memory device may include delay components that support generating a timing signal having aspects that are delayed relative to an input signal. In accordance with examples as disclosed herein, a memory device may include delay components having a variable and configurable impedance, where the configurable impedance may be based at least in part on a configuration signal generated at the memory device. A configuration signal may be generated based on fabrication characteristics of the memory device, or based on operating conditions of the memory device, or various combinations thereof.
    Type: Application
    Filed: April 8, 2020
    Publication date: October 14, 2021
    Inventors: Zhi Qi Huang, Wei Lu Chu, Dong Pan
  • Publication number: 20210203316
    Abstract: Devices for generating a delay output signal are disclosed. A device may include a first delay circuit and a second delay circuit coupled in series between a first node and a second node in a delay path for the device, and having a third node therebetween. The device may also include a third circuit coupled to the third node and configured to charge the third node responsive to detecting a signal has passed through the first node and the third node. Associated semiconductor devices and methods are also disclosed.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Inventors: Hiroshi Akamatsu, Zhi Qi Huang
  • Patent number: 10998893
    Abstract: Methods and apparatus for generating a delayed output signal from an input signal applied to an RC delay circuit of a semiconductor device during an active mode. The RC delay circuit is configured to pull up a voltage level on a node responsive to a reset signal during a stand-by mode.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: May 4, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Hiroshi Akamatsu, Zhi Qi Huang