Patents by Inventor Yihang Liu

Yihang 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).

  • Patent number: 12292211
    Abstract: A system and a method are provided to create an indoor thermal environment based on impinging jet ventilation (IJV) and ductless personalized ventilation (DPV), the system includes an IJV duct installed on a wall of a room and a DPV device installed on a table. An air inlet of the IJV duct is connected to an air conditioning system and an air outlet of the IJV duct is close to ground. An upper duct and a lower duct of the DPV device are disposed on two opposite sides of a tabletop, the upper duct is provided with an air supply panel, the lower duct is provided with a duct fan with an air supply volume being adjustable, and the duct fan is configured to send air absorbed from a ground air lake to a user's face area through the air supply panel of the upper duct.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: May 6, 2025
    Assignees: TIANJIAN CHENGJIAN UNIVERSITY, XI'AN UNIVERISTY OF ARCHITECTURE AND TECHNOLOGY
    Inventors: Bin Yang, Pengju Liu, Yihang Liu, Bingan Pan, Pengfei Yang, Dacheng Jin
  • Publication number: 20240420767
    Abstract: The memory device includes a memory block with a plurality of memory cells that are arranged in a plurality of word lines. The word lines are grouped in a plurality of layers. The memory device also includes circuitry that is configured to program the memory cells of a selected word line of the plurality of word lines. The circuitry is configured during programming to determine which layer of the plurality of layers the selected word line is located in. The circuitry is also configured to apply a programming voltage to the selected word line and apply pass voltages to a plurality of unselected word lines. For at least some of the unselected word lines, the pass voltage is a baseline pass voltage level that is adjusted by a layer-unique bias pass voltage.
    Type: Application
    Filed: August 10, 2023
    Publication date: December 19, 2024
    Applicant: Western Digital Technologies, Inc.
    Inventors: Peng Wang, Jia Li, Yihang Liu
  • Patent number: 12153801
    Abstract: A non-volatile memory system separately performs a memory operation for multiple sub-blocks of a block in order from previously determined slowest sub-block of the block to a previously determined faster sub-block of the block. As a slower sub-block is more likely to fail, this order of is more likely to identify a failure earlier in the process thereby saving time and reducing potential for a disturb. In some embodiments, the proposed order of operation can be used in conjunction with a programming process that concurrently programs blocks in multiple planes using completion of programming of a fastest plane to a data state as a trigger to test for program failure of other planes to the data state.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: November 26, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Jie Liu, Sarath Puthenthermadam, Jiahui Yuan, Feng Gao
  • Patent number: 12046294
    Abstract: To prevent loss of data due to a word line to memory hole short (or another defect), it is proposed to perform an erase process for a plurality of memory cells, detect that a subset of the plurality of memory cells are slow to erase, and prevent successfully programming for at least some of the memory cells that are slow to erase. This technique uses the erase process to predict future word line to memory hole shorts and prevent programming of memory cells predicted to have a future word line to memory hole short so no data will be lost when the short manifests.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: July 23, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Lito De La Rama, Feng Gao
  • Publication number: 20240177778
    Abstract: A non-volatile storage apparatus includes non-volatile memory cells, word lines connected to the non-volatile memory cells, and a control circuit connected to the word lines and the memory cells. The word lines include data word lines and dummy word lines. Memory cells connected to data word lines are configured to store host data. Memory cells connected to dummy word lines do not store host data. The control circuit is configured to erase, program and read the memory cells. Errors from threshold voltage up-shifting in the memory cells connected to dummy word lines is prevented by adjusting the voltage applied to dummy word lines.
    Type: Application
    Filed: July 24, 2023
    Publication date: May 30, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Peng Wang, Jie Liu, Lito De La Rama, Feng Gao, Xiaoyu Yang
  • Publication number: 20240168661
    Abstract: An apparatus is provided that includes a control circuit coupled to a plurality of non-volatile memory cells. The control circuit is configured to perform a program-verify iteration on a first set of the non-volatile memory cells and a second set of the non-volatile memory cells in a plurality of program loops, determine that at least one of the first set of the non-volatile memory cells and the second set of the non-volatile memory cells verification to a programmed state in a first number of program loops, and compare a difference between the first number of program loops and the second number of program loops to an adaptive maximum loop delta limit. The adaptive maximum loop delta limit varies as a function of temperature.
    Type: Application
    Filed: July 19, 2023
    Publication date: May 23, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Sarath Puthenthermadam, Yihang Liu, Jiahui Yuan
  • Patent number: 11974377
    Abstract: A system and method for nighttime lighting control and danger monitoring and alarming are provided. The system includes a data acquisition system, an information processing system, and a terminal control system. The data acquisition system is configured to acquire video information in a room and a voice content of a person in the room, and transmit the video information and the voice content to the information processing system; the information processing system is configured to obtain voice command information based on the voice content and age information and safety state information of the person based on the video information, and transmit the voice command information, the age information and the safety state information to the terminal control system; and the terminal control system is configured to control a terminal lighting fixture, and perform capturing of an image of the person and perform voice alarming according to the safety state information.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: April 30, 2024
    Assignees: TIANJIN CHENGJIAN UNIVERSITY, XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
    Inventors: Bin Yang, Pengju Liu, Yihang Liu, Dacheng Jin, Bingan Pan, Pengfei Yang
  • Publication number: 20240127895
    Abstract: During a read operation for memory cells connected a selected word line, a memory system adjusts the overdrive voltage applied to word lines adjacent the selected word line in order to compensate for margin degradation between the erased data state and the lowest programmed data state.
    Type: Application
    Filed: July 12, 2023
    Publication date: April 18, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Peng Wang, Zhenni Wan, Jia Li, Yihang Liu, Bo Lei
  • Publication number: 20240071533
    Abstract: An apparatus is provided that includes a block of memory cells having a NAND string that includes a first select transistor, and a control circuit coupled to the block of memory cells. The control circuit is configured to perform an erase operation on the block of memory cells by determining a first count of a number of times that the block of memory cells previously has been programmed and erased, determining based on the first count a first drain-to-gate voltage of the first select transistor, wherein the first drain-to-gate voltage is configured to cause the first select transistor to generate a first gate-induced drain leakage current, and applying a first erase pulse to the first select transistor based on the determined first drain-to-gate voltage.
    Type: Application
    Filed: August 31, 2022
    Publication date: February 29, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Lito De La Rama, Feng Gao
  • Publication number: 20240036740
    Abstract: A non-volatile memory system separately performs a memory operation for multiple sub-blocks of a block in order from previously determined slowest sub-block of the block to a previously determined faster sub-block of the block. As a slower sub-block is more likely to fail, this order of is more likely to identify a failure earlier in the process thereby saving time and reducing potential for a disturb. In some embodiments, the proposed order of operation can be used in conjunction with a programming process that concurrently programs blocks in multiple planes using completion of programming of a fastest plane to a data state as a trigger to test for program failure of other planes to the data state.
    Type: Application
    Filed: November 9, 2022
    Publication date: February 1, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Jie Liu, Sarath Puthenthermadam, Jiahui Yuan, Feng Gao
  • Publication number: 20230420055
    Abstract: To prevent loss of data due to a word line to memory hole short (or another defect), it is proposed to perform an erase process for a plurality of memory cells, detect that a subset of the plurality of memory cells are slow to erase, and prevent successfully programming for at least some of the memory cells that are slow to erase. This technique uses the erase process to predict future word line to memory hole shorts and prevent programming of memory cells predicted to have a future word line to memory hole short so no data will be lost when the short manifests.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 28, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Yihang Liu, Xiaochen Zhu, Lito De La Rama, Feng Gao
  • Patent number: 11812196
    Abstract: A construction site safety monitoring system based on computer vision is provided. It includes a data acquisition system for collecting video information of personnel and operation platforms on construction site in real time; an information processing system for detecting and distinguishing the personnel and the operation platforms in the video information, intercepting personnel feature images and video of tilted operation platform whose personnel facial temperature and inclination angles after calculation are greater than or equal to preset values as a personnel safety incident and a platform safety incident respectively; and a terminal reminder system for receiving information of at least one the personnel safety incident and the platform safety incidents and providing a reminder.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: November 7, 2023
    Assignees: TIANJIN CHENGJIAN UNIVERSITY, XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
    Inventors: Bin Yang, Pengju Liu, Yihang Liu, Dacheng Jin, Bingan Pan, Pengfei Yang, Angui Li
  • Patent number: 11796208
    Abstract: Indoor personnel information identifying apparatus and method for assisting an air conditioning system of on-demand air supply are provided, the apparatus includes a data acquisition device, an information processing device and an information display device, the data acquisition device is configured to acquire weight information and shoe image information of personnel in real time, the information processing device is configured to predict an total calorific value of indoor personnel according to a real-time number of indoor personnel and obtain recommended air supply parameter information for the air conditioning system according to the total calorific value, the information display device is configured to receive and display personnel information processed by the data acquisition device and the information processing device and the recommended air supply parameter information.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: October 24, 2023
    Assignees: TIANJIN CHENGJIAN UNIVERSITY, XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
    Inventors: Bin Yang, Dacheng Jin, Yihang Liu, Pengju Liu, Bingan Pan, Pengfei Yang
  • Publication number: 20230213224
    Abstract: A system and a method are provided to create an indoor thermal environment based on impinging jet ventilation (IJV) and ductless personalized ventilation (DPV), the system includes an IJV duct installed on a wall of a room and a DPV device installed on a table. An air inlet of the IJV duct is connected to an air conditioning system and an air outlet of the IJV duct is close to ground. An upper duct and a lower duct of the DPV device are disposed on two opposite sides of a tabletop, the upper duct is provided with an air supply panel, the lower duct is provided with a duct fan with an air supply volume being adjustable, and the duct fan is configured to send air absorbed from a ground air lake to a user’s face area through the air supply panel of the upper duct.
    Type: Application
    Filed: June 20, 2022
    Publication date: July 6, 2023
    Inventors: BIN YANG, PENGJU LIU, YIHANG LIU, BINGAN PAN, PENGFEI YANG, DACHENG JIN
  • Publication number: 20230217572
    Abstract: A system and method for nighttime lighting control and danger monitoring and alarming are provided. The system includes a data acquisition system, an information processing system, and a terminal control system. The data acquisition system is configured to acquire video information in a room and a voice content of a person in the room, and transmit the video information and the voice content to the information processing system; the information processing system is configured to obtain voice command information based on the voice content and age information and safety state information of the person based on the video information, and transmit the voice command information, the age information and the safety state information to the terminal control system; and the terminal control system is configured to control a terminal lighting fixture, and perform capturing of an image of the person and perform voice alarming according to the safety state information.
    Type: Application
    Filed: August 26, 2022
    Publication date: July 6, 2023
    Inventors: BIN YANG, PENGJU LIU, YIHANG LIU, DACHENG JIN, BINGAN PAN, PENGFEI YANG
  • Publication number: 20230168027
    Abstract: A control system and a control method of refrigeration in a closed space based on computer vision are provided. An image of a food, temperature and humidity information in the closed space are collected, and a type of the food is identified according to the image. The image is processed through Euler video amplification when food is not packaged to obtain surface color distribution information of the food, a state of the food is determined according to the surface color distribution information and a historical learning result, and a state prompt corresponding to the state of the food is provided to a user. Temperature and humidity in the closed space are regulated according to the state of the food. The state of the food is determined according to storage time and a known quality guarantee period when the food is packaged, and another state prompt is provided to the user.
    Type: Application
    Filed: June 13, 2022
    Publication date: June 1, 2023
    Inventors: BIN YANG, XIAOJING LI, HUANGCHENG YAO, YIHANG LIU, LINGGE CHEN
  • Publication number: 20230030722
    Abstract: Indoor personnel information identifying apparatus and method for assisting an air conditioning system of on-demand air supply are provided, the apparatus includes a data acquisition device, an information processing device and an information display device, the data acquisition device is configured to acquire weight information and shoe image information of personnel in real time, the information processing device is configured to predict an total calorific value of indoor personnel according to a real-time number of indoor personnel and obtain recommended air supply parameter information for the air conditioning system according to the total calorific value, the information display device is configured to receive and display personnel information processed by the data acquisition device and the information processing device and the recommended air supply parameter information.
    Type: Application
    Filed: December 29, 2021
    Publication date: February 2, 2023
    Inventors: Bin Yang, Dacheng Jin, Yihang Liu, Pengju Liu, Bingan Pan, Pengfei Yang
  • Publication number: 20220345667
    Abstract: A construction site safety monitoring system based on computer vision is provided. It includes a data acquisition system for collecting video information of personnel and operation platforms on construction site in real time; an information processing system for detecting and distinguishing the personnel and the operation platforms in the video information, intercepting personnel feature images and video of tilted operation platform whose personnel facial temperature and inclination angles after calculation are greater than or equal to preset values as a personnel safety incident and a platform safety incident respectively; and a terminal reminder system for receiving information of at least one the personnel safety incident and the platform safety incidents and providing a reminder.
    Type: Application
    Filed: November 18, 2021
    Publication date: October 27, 2022
    Inventors: Bin Yang, Pengju Liu, Yihang Liu, Dacheng Jin, Bingan Pan, Pengfei Yang, Angui Li
  • Patent number: 11223039
    Abstract: A method for forming an anode of a sodium ion battery includes a step of heat treating the red phosphorus precursor and reduced graphene oxide powder at a first temperature that vaporizes the red phosphorus precursor such that red phosphorus structures grow on the reduced graphene oxide powder. Another method for forming an anode of a sodium ion battery includes steps of placing a red phosphorus precursor and a graphene oxide precursor in a reaction chamber; establishing a reducing environment in the reaction chamber; and heating the red phosphorus precursor and a graphene oxide precursor to a first temperature that is sufficient temperature to form a composite of red phosphorus and reduced graphene oxide. Characteristically, red phosphorus deposition and graphene oxide reduction are completed simultaneously in a single-step heat treatment. A method for making a black phosphorus-composite for sodium-ion batter anodes is also provided.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 11, 2022
    Assignees: University of Southern California, California Institute of Technology
    Inventors: Chongwu Zhou, Xuan Cao, Qingzhou Liu, Yihang Liu, Yuqiang Ma, Chenfei Shen, Liang Chen, Anyi Zhang, Paul David Asimow
  • Publication number: 20210012974
    Abstract: The experimental realization of a non-volatile artificial synapse using organic polymers in a scalable fabrication process is provided. The three-terminal electrochemical neuromorphic device successfully emulates the key features of biological synapses: long-term potentiation/depression, spike-timing-dependent plasticity learning rule, paired-pulse facilitation, and ultralow energy consumption. The artificial synapse network exhibits excellent endurance against bending tests and enables a direct emulation of logic gates, which shows the feasibility of using them in futuristic hierarchical neural networks. Based on the demonstration of 100 distinct, non-volatile conductance states, high accuracy in pattern recognition and face classification neural network simulations is achieved.
    Type: Application
    Filed: July 14, 2020
    Publication date: January 14, 2021
    Inventors: CHONGWU ZHOU, XUAN CAO, QINGZHOU LIU, YIHANG LIU