Patents by Inventor Youyang Ng

Youyang Ng 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: 20230290125
    Abstract: An image processing apparatus has a first image acquisitor that acquires a source image, a second image acquisitor that acquires a first target image, a label acquisitor that acquires a label, a feature extractor including a first neural network that extracts a feature of the source image and a feature of the first target image, a class classifier including a second neural network that performs a class classification of the source image and the first target image, a domain classifier including a third neural network that performs a domain classification of the source image and the first target image, a processor that assigns a pseudo label to the first target image, a self-learner that performs a self-learning of the first neural network, the second neural network, and the third neural network, and a learner that learns the first, second and third neural networks, by performing a back propagation process.
    Type: Application
    Filed: September 12, 2022
    Publication date: September 14, 2023
    Inventors: Bo WANG, Youyang NG, Yuchieh LIN, Kengo NAKATA, Takeshi FUJIWARA
  • Patent number: 11715194
    Abstract: An information processing apparatus has an acquisitor configured to acquire an entire area image obtained by capturing an entire area of a processing surface of a wafer including at least one defect, a training image selector configured to select, as a training image, a partial image including at least one defect from the entire area image, a model constructor configured to construct a calculation model of generating a label image obtained by extracting and binarizing the defect included in the partial image, and a learner configured to update a parameter of the calculation model based on a difference between the label image generated by inputting the training image to the calculation model and a reference label image obtained by extracting and binarizing the defect of the training image.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: August 1, 2023
    Assignee: Kioxia Corporation
    Inventors: Youyang Ng, Bo Wang, Takuji Ohashi, Osamu Yamane, Takeshi Fujiwara
  • Patent number: 11715189
    Abstract: A semiconductor image processing apparatus has an image input unit inputs a first semiconductor image, an exposure condition input unit configured to input exposure conditions, a generator performs a process of extracting a feature amount in consideration of the exposure conditions while reducing resolution of the first semiconductor image and thereafter use the extracted feature amount to increase the resolution to generate a second semiconductor image, and a discriminator configured to discriminate whether the input image is the second semiconductor image or a third semiconductor image provided in advance. The generator performs learning so that the discriminator erroneously discriminates the second semiconductor image as the third semiconductor image based on a result discriminated by the discriminator.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: August 1, 2023
    Assignee: Kioxia Corporation
    Inventors: Atsushi Nakajima, Youyang Ng, Yuko Kono, Takuji Ohashi, Chihiro Ida
  • Patent number: 11342040
    Abstract: A memory system includes a non-volatile memory having a plurality of memory cells and a memory controller. The memory controller is configured to generate a histogram indicating, with respect to each of a plurality of threshold voltage levels for multi-level cell (MLC) reading, a number of memory cells at the threshold voltage level, based on data read from the plurality of memory cells using a plurality of reference read voltages, estimate a plurality of read voltages for MLC reading of the plurality of memory cells as estimation values by inputting the histogram into a read voltage estimation model, determine, through MLC reading of the plurality of memory cells using a plurality of sets of read voltages, a set of read voltages for MLC reading as observation values, and update one or more parameters of the read voltage estimation model based on the estimation values and the observation values.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: May 24, 2022
    Assignee: KIOXIA CORPORATION
    Inventors: Ryo Yamaki, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi, Gibeom Park
  • Publication number: 20220076398
    Abstract: An information processing apparatus has an acquisitor configured to acquire an entire area image obtained by capturing an entire area of a processing surface of a wafer including at least one defect, a training image selector configured to select, as a training image, a partial image including at least one defect from the entire area image, a model constructor configured to construct a calculation model of generating a label image obtained by extracting and binarizing the defect included in the partial image, and a learner configured to update a parameter of the calculation model based on a difference between the label image generated by inputting the training image to the calculation model and a reference label image obtained by extracting and binarizing the defect of the training image.
    Type: Application
    Filed: March 3, 2021
    Publication date: March 10, 2022
    Applicant: Kioxia Corporation
    Inventors: Youyang NG, Bo WANG, Takuji OHASHI, Osamu YAMANE, Takeshi FUJIWARA
  • Publication number: 20210295942
    Abstract: A memory system includes a non-volatile memory having a plurality of memory cells and a memory controller. The memory controller is configured to generate a histogram indicating, with respect to each of a plurality of threshold voltage levels for multi-level cell (MLC) reading, a number of memory cells at the threshold voltage level, based on data read from the plurality of memory cells using a plurality of reference read voltages, estimate a plurality of read voltages for MLC reading of the plurality of memory cells as estimation values by inputting the histogram into a read voltage estimation model, determine, through MLC reading of the plurality of memory cells using a plurality of sets of read voltages, a set of read voltages for MLC reading as observation values, and update one or more parameters of the read voltage estimation model based on the estimation values and the observation values.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 23, 2021
    Inventors: Ryo YAMAKI, Youyang NG, Koji HORISAKI, Kazuhisa HORIUCHI, Gibeom PARK
  • Patent number: 11093173
    Abstract: According to one embodiment, in a memory system, a memory controller is configured to execute a first operation of observing an optimum value of a read voltage and updating a set value based on the observation result of the optimum value, at a predetermined time point of a plurality of time points for updating the set value of the read voltage for a plurality of memory cells, and execute a second operation of updating the set value based on the set value updated at one previous time point without executing the observation of the optimum value, at a time point after one time point of the predetermined time point.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: August 17, 2021
    Assignee: Kioxia Corporation
    Inventors: Ryo Yamaki, Gibeom Park, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi
  • Patent number: 11086569
    Abstract: According to an embodiment, a memory system includes a plurality of memory cells and a memory controller. The memory controller executes a read operation on the plurality of memory cells using one or more reference read voltages to acquire a histogram representing the number of memory cells with respect to a threshold voltage. The memory controller inputs the histogram to a trained neural network model including an output layer for outputting one or more actual read voltages to read data from the memory cells. The memory controller executes a read operation on the memory cells using the one or more actual read voltages output from the output layer.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: August 10, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Youyang Ng, Gibeom Park, Kazuhisa Horiuchi, Ryo Yamaki, Koji Horisaki
  • Publication number: 20210089232
    Abstract: According to one embodiment, in a memory system, a memory controller is configured to execute a first operation of observing an optimum value of a read voltage and updating a set value based on the observation result of the optimum value, at a predetermined time point of a plurality of time points for updating the set value of the read voltage for a plurality of memory cells, and execute a second operation of updating the set value based on the set value updated at one previous time point without executing the observation of the optimum value, at a time point after one time point of the predetermined time point.
    Type: Application
    Filed: February 14, 2020
    Publication date: March 25, 2021
    Applicant: Kioxia Corporation
    Inventors: Ryo Yamaki, Gibeom Park, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi
  • Patent number: 10957400
    Abstract: A memory controller performs a reference read on a plurality of memory cells using reference read voltages, generates a histogram indicating the number of memory cells in different threshold voltage bins based on results of the reference read, estimates actual read voltages based on the histogram and a first estimation function, and reads data using the actual read voltages. When reading of the data with the actual read voltages estimated using the first estimation function fails, the memory controller estimates actual read voltages using a second estimation function different from the first estimation function and reads the data with the actual read voltages estimated using the second estimation function.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 23, 2021
    Assignee: KIOXIA CORPORATION
    Inventors: Koji Horisaki, Kazuhisa Horiuchi, Ryo Yamaki, Gibeom Park, Youyang Ng
  • Publication number: 20210074366
    Abstract: A memory controller performs a reference read on a plurality of memory cells using reference read voltages, generates a histogram indicating the number of memory cells in different threshold voltage bins based on results of the reference read, estimates actual read voltages based on the histogram and a first estimation function, and reads data using the actual read voltages. When reading of the data with the actual read voltages estimated using the first estimation function fails, the memory controller estimates actual read voltages using a second estimation function different from the first estimation function and reads the data with the actual read voltages estimated using the second estimation function.
    Type: Application
    Filed: February 26, 2020
    Publication date: March 11, 2021
    Inventors: Koji HORISAKI, Kazuhisa HORIUCHI, Ryo YAMAKI, Gibeom PARK, Youyang NG
  • Publication number: 20210027457
    Abstract: A semiconductor image processing apparatus has an image input unit inputs a first semiconductor image, an exposure condition input unit configured to input exposure conditions, a generator performs a process of extracting a feature amount in consideration of the exposure conditions while reducing resolution of the first semiconductor image and thereafter use the extracted feature amount to increase the resolution to generate a second semiconductor image, and a discriminator configured to discriminate whether the input image is the second semiconductor image or a third semiconductor image provided in advance. The generator performs learning so that the discriminator erroneously discriminates the second semiconductor image as the third semiconductor image based on a result discriminated by the discriminator.
    Type: Application
    Filed: July 20, 2020
    Publication date: January 28, 2021
    Applicant: Kioxia Corporation
    Inventors: Atsushi NAKAJIMA, Youyang NG, Yuko Kono, Takuji Ohashi, Chihiro Ida
  • Publication number: 20200285419
    Abstract: According to an embodiment, a memory system includes a plurality of memory cells and a memory controller. The memory controller executes a read operation on the plurality of memory cells using one or more reference read voltages to acquire a histogram representing the number of memory cells with respect to a threshold voltage. The memory controller inputs the histogram to a trained neural network model including an output layer for outputting one or more actual read voltages to read data from the memory cells. The memory controller executes a read operation on the memory cells using the one or more actual read voltages output from the output layer.
    Type: Application
    Filed: September 3, 2019
    Publication date: September 10, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Youyang NG, Gibeom PARK, Kazuhisa HORIUCHI, Ryo YAMAKI, Koji HORISAKI
  • Patent number: 10187818
    Abstract: According to one embodiment, a communication apparatus includes a congestion degree calculating unit and an operation mode setting unit. The congestion degree calculating unit calculates a third congestion degree related to wireless communication based on a first congestion degree of first wireless communication and a second congestion degree of second wireless communication. In the first wireless communication, peer-to-peer communication is performed directly between communication apparatuses, and in the second wireless communication, communication is performed through a wireless communication device. The operation mode setting unit switches an operation mode of the first wireless communication based on the third congestion degree to either of a mode in which the communication apparatus transmits content or a mode in which the communication apparatus receives content.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: January 22, 2019
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Yosuke Bando, Yujen Lai, Youyang Ng, Kenichi Maeda, Takeshi Sakoda, Takaomi Murakami, Yusuke Doi, Masahiro Ishiyama
  • Publication number: 20170111819
    Abstract: According to one embodiment, a communication apparatus includes a congestion degree calculating unit and an operation mode setting unit. The congestion degree calculating unit calculates a third congestion degree related to wireless communication based on a first congestion degree of first wireless communication and a second congestion degree of second wireless communication. In the first wireless communication, peer-to-peer communication is performed directly between communication apparatuses, and in the second wireless communication, communication is performed through a wireless communication device. The operation mode setting unit switches an operation mode of the first wireless communication based on the third congestion degree to either of a mode in which the communication apparatus transmits content or a mode in which the communication apparatus receives content.
    Type: Application
    Filed: March 1, 2016
    Publication date: April 20, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yosuke BANDO, Yujen LAI, Youyang NG, Kenichi MAEDA, Takeshi SAKODA, Takaomi MURAKAMI, Yusuke DOI, Masahiro ISHIYAMA
  • Patent number: 9359165
    Abstract: According to an embodiment, there is provided a sheet processing apparatus including a contactless type detection magnetic sensor for detecting magnetism of a sheet, correction magnetic sensors for detecting a magnetic field near the detection magnetic sensor, coils arranged near the detection magnetic sensor, and a cancel device for generating a cancellation magnetic field for cancelling a magnetic field near the detection magnetic sensor from the coils based on a detection result of the correction magnetic sensors.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 7, 2016
    Assignee: Toshiba Corporation
    Inventor: Youyang Ng
  • Publication number: 20150259172
    Abstract: According to an embodiment, there is provided a sheet processing apparatus including a contactless type detection magnetic sensor for detecting magnetism of a sheet, correction magnetic sensors for detecting a magnetic field near the detection magnetic sensor, coils arranged near the detection magnetic sensor, and a cancel device for generating a cancellation magnetic field for cancelling a magnetic field near the detection magnetic sensor from the coils based on a detection result of the correction magnetic sensors.
    Type: Application
    Filed: March 10, 2015
    Publication date: September 17, 2015
    Inventor: Youyang Ng