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).
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Publication number: 20230290125Abstract: 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: ApplicationFiled: September 12, 2022Publication date: September 14, 2023Inventors: Bo WANG, Youyang NG, Yuchieh LIN, Kengo NAKATA, Takeshi FUJIWARA
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Patent number: 11715194Abstract: 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: GrantFiled: March 3, 2021Date of Patent: August 1, 2023Assignee: Kioxia CorporationInventors: Youyang Ng, Bo Wang, Takuji Ohashi, Osamu Yamane, Takeshi Fujiwara
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Patent number: 11715189Abstract: 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: GrantFiled: July 20, 2020Date of Patent: August 1, 2023Assignee: Kioxia CorporationInventors: Atsushi Nakajima, Youyang Ng, Yuko Kono, Takuji Ohashi, Chihiro Ida
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Patent number: 11342040Abstract: 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: GrantFiled: February 24, 2021Date of Patent: May 24, 2022Assignee: KIOXIA CORPORATIONInventors: Ryo Yamaki, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi, Gibeom Park
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Publication number: 20220076398Abstract: 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: ApplicationFiled: March 3, 2021Publication date: March 10, 2022Applicant: Kioxia CorporationInventors: Youyang NG, Bo WANG, Takuji OHASHI, Osamu YAMANE, Takeshi FUJIWARA
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Publication number: 20210295942Abstract: 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: ApplicationFiled: February 24, 2021Publication date: September 23, 2021Inventors: Ryo YAMAKI, Youyang NG, Koji HORISAKI, Kazuhisa HORIUCHI, Gibeom PARK
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Patent number: 11093173Abstract: 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: GrantFiled: February 14, 2020Date of Patent: August 17, 2021Assignee: Kioxia CorporationInventors: Ryo Yamaki, Gibeom Park, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi
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Patent number: 11086569Abstract: 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: GrantFiled: September 3, 2019Date of Patent: August 10, 2021Assignee: TOSHIBA MEMORY CORPORATIONInventors: Youyang Ng, Gibeom Park, Kazuhisa Horiuchi, Ryo Yamaki, Koji Horisaki
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Publication number: 20210089232Abstract: 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: ApplicationFiled: February 14, 2020Publication date: March 25, 2021Applicant: Kioxia CorporationInventors: Ryo Yamaki, Gibeom Park, Youyang Ng, Koji Horisaki, Kazuhisa Horiuchi
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Patent number: 10957400Abstract: 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: GrantFiled: February 26, 2020Date of Patent: March 23, 2021Assignee: KIOXIA CORPORATIONInventors: Koji Horisaki, Kazuhisa Horiuchi, Ryo Yamaki, Gibeom Park, Youyang Ng
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Publication number: 20210074366Abstract: 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: ApplicationFiled: February 26, 2020Publication date: March 11, 2021Inventors: Koji HORISAKI, Kazuhisa HORIUCHI, Ryo YAMAKI, Gibeom PARK, Youyang NG
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Publication number: 20210027457Abstract: 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: ApplicationFiled: July 20, 2020Publication date: January 28, 2021Applicant: Kioxia CorporationInventors: Atsushi NAKAJIMA, Youyang NG, Yuko Kono, Takuji Ohashi, Chihiro Ida
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Publication number: 20200285419Abstract: 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: ApplicationFiled: September 3, 2019Publication date: September 10, 2020Applicant: TOSHIBA MEMORY CORPORATIONInventors: Youyang NG, Gibeom PARK, Kazuhisa HORIUCHI, Ryo YAMAKI, Koji HORISAKI
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Patent number: 10187818Abstract: 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: GrantFiled: March 1, 2016Date of Patent: January 22, 2019Assignee: TOSHIBA MEMORY CORPORATIONInventors: Yosuke Bando, Yujen Lai, Youyang Ng, Kenichi Maeda, Takeshi Sakoda, Takaomi Murakami, Yusuke Doi, Masahiro Ishiyama
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Publication number: 20170111819Abstract: 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: ApplicationFiled: March 1, 2016Publication date: April 20, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Yosuke BANDO, Yujen LAI, Youyang NG, Kenichi MAEDA, Takeshi SAKODA, Takaomi MURAKAMI, Yusuke DOI, Masahiro ISHIYAMA
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Patent number: 9359165Abstract: 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: GrantFiled: March 10, 2015Date of Patent: June 7, 2016Assignee: Toshiba CorporationInventor: Youyang Ng
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Publication number: 20150259172Abstract: 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: ApplicationFiled: March 10, 2015Publication date: September 17, 2015Inventor: Youyang Ng