Patents by Inventor Masakazu Okamura

Masakazu Okamura 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: 11967297
    Abstract: A color modulation method for a display includes: obtaining a group of original RGB data of a pixel of an image; calling a display look-up-table (LUT) to determine whether a group of RGB mapped data corresponding to the group of original RGB data is present in the display LUT; if in, performing color modulation using the group of RGB mapped data corresponding to the group of original RGB data; and if not in, using the group of original RGB data, a plurality of groups of selected RGB data, and a group of RGB mapped data corresponding to each group of selected RGB data in combination with a predetermined interpolation algorithm to calculate the group of RGB mapped data corresponding to the group of original RGB data, and then using the obtained group of RGB mapped data to perform the color modulation.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 23, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xian Wang, Masakazu Okamura
  • Publication number: 20240115835
    Abstract: A dilator (30) insertable into a catheter (20) includes a tubular shaft part (40), and a tubular flexible part (50) located on a distal end side of the shaft part (40) and formed of a resin more flexible than the shaft part (40), and includes, in the shaft part (40) and/or the flexible part (50), a physical property inclined part (42) in which rigidity gradually decreases from a proximal end side toward a distal end side. The catheter assembly is capable of achieving both stable catheter insertability into a blood vessel and reduction in risk of blood vessel perforation.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 11, 2024
    Inventors: Ryo Okamura, Shigeru Yoshikawa, Masakazu Miyata, Shingo Ishii
  • Patent number: 11915667
    Abstract: Provided is a method for displaying an image including: acquiring a to-be-displayed image; correcting the to-be-displayed image based on a target look-up table, wherein in the target look-up table, at least one of the original pixel values and a corresponding corrected pixel value satisfy: an absolute value of a difference between a first chroma and a second chroma is less than or equal to a chroma difference threshold, wherein the first chroma is a chroma of a first pixel, a pixel value of the first pixel being acquired by converting the original pixel value, and the second chroma is a chroma of a second pixel displayed by the display device, a pixel value of the second pixel being acquired by converting the corrected pixel value; and displaying a corrected to-be-displayed image.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: February 27, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xian Wang, Ran Duan, Masakazu Okamura
  • Patent number: 11843263
    Abstract: The present disclosure relates to a charging system, a foreign object detection method and component, and a charging control method and device, which belong to the wireless technical field. The foreign object detection method includes receiving a voltage value and a current value of the transmitting coil, and determining a mutual inductance value of the transmitting coil according to the voltage value and the current value of the transmitting coil; receiving a voltage value and a current value of the receiving coil, and determining a mutual inductance value of the receiving coil according to the voltage value and the current value of the receiving coil; and determining whether there is a conductor foreign object between the receiving coil and the transmitting coil according to the mutual inductance value of the transmitting coil and the mutual inductance value of the receiving coil.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: December 12, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhichao Li, Tianyue Zhao, Xianzhen Li, Enhui Guan, Tianxiao Zhao, Wei Deng, Donglei Mu, Masakazu Okamura
  • Publication number: 20230103921
    Abstract: The present disclosure relates to a charging system, a foreign object detection method and component, and a charging control method and device, which belong to the wireless technical field. The foreign object detection method includes receiving a voltage value and a current value of the transmitting coil, and determining a mutual inductance value of the transmitting coil according to the voltage value and the current value of the transmitting coil; receiving a voltage value and a current value of the receiving coil, and determining a mutual inductance value of the receiving coil according to the voltage value and the current value of the receiving coil; and determining whether there is a conductor foreign object between the receiving coil and the transmitting coil according to the mutual inductance value of the transmitting coil and the mutual inductance value of the receiving coil.
    Type: Application
    Filed: April 27, 2020
    Publication date: April 6, 2023
    Inventors: Zhichao LI, Tianyue ZHAO, Xianzhen LI, Enhui GUAN, Tianxiao ZHAO, Wei DENG, Donglei MU, Masakazu OKAMURA
  • Publication number: 20220392421
    Abstract: A color modulation method for a display includes: obtaining a group of original RGB data of a pixel of an image; calling a display look-up-table (LUT) to determine whether a group of RGB mapped data corresponding to the group of original RGB data is present in the display LUT; if in, performing color modulation using the group of RGB mapped data corresponding to the group of original RGB data; and if not in, using the group of original RGB data, a plurality of groups of selected RGB data, and a group of RGB mapped data corresponding to each group of selected RGB data in combination with a predetermined interpolation algorithm to calculate the group of RGB mapped data corresponding to the group of original RGB data, and then using the obtained group of RGB mapped data to perform the color modulation.
    Type: Application
    Filed: March 26, 2021
    Publication date: December 8, 2022
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xian WANG, Masakazu OKAMURA
  • Publication number: 20210407460
    Abstract: Provided is a method for displaying an image including: acquiring a to-be-displayed image; correcting the to-be-displayed image based on a target look-up table, wherein in the target look-up table, at least one of the original pixel values and a corresponding corrected pixel value satisfy: an absolute value of a difference between a first chroma and a second chroma is less than or equal to a chroma difference threshold, wherein the first chroma is a chroma of a first pixel, a pixel value of the first pixel being acquired by converting the original pixel value, and the second chroma is a chroma of a second pixel displayed by the display device, a pixel value of the second pixel being acquired by converting the corrected pixel value; and displaying a corrected to-be-displayed image.
    Type: Application
    Filed: June 29, 2021
    Publication date: December 30, 2021
    Inventors: Xian Wang, Ran Duan, Masakazu Okamura
  • Patent number: 10847008
    Abstract: Exemplary embodiments of the present disclosure provide a monitoring system and method, the system comprising at least one pair of first sensing devices disposed on an outside and inside of a bathroom door, an information acquisition module, a central control module, and an alarm module, wherein the information acquisition module controls the first sensing devices to acquire first data and transmits the acquired first data to the central control module, the central control module determines whether to generate a first alarm signal and/or second alarm signal based on the acquired first data, and transmits the generated first alarm signal and/or a second alarm signal to the alarm module. Thus, the system can be informed timely of the health status of an old person living alone according to the use situation of the bathroom, and also the privacy of the old person can be protected effectively.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: November 24, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lihua Geng, Masakazu Okamura
  • Patent number: 10706791
    Abstract: A backlight brightness control method and a backlight brightness control device are provided. The backlight brightness control method includes: acquiring a luminous brightness value of a display panel; determining a relationship between the luminous brightness value and a preset brightness value by a brightness control circuit; transmitting an adjusted current value to a backlight driver module according to the relationship by the brightness control circuit; and generating a current having the adjusted current value by the backlight driver module to drive a backlight module in the display panel to emit light.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xinshe Yin, Masakazu Okamura
  • Patent number: 10644541
    Abstract: Provided are a transformer and a power supply board including the transformer, the transformer includes: a power supply circuit, wherein the power supply circuit includes a power supply antenna and the power supply circuit is configured to transmit electric power through the power supply antenna; and a power receiving circuit, wherein the power receiving circuit includes a power receiving antenna and the power receiving circuit is configured to receive the electric power transmitted by the power supply antenna through the power receiving antenna. The transformer uses the principle of resonance wireless charging so as to improve the working frequency of the transformer, decrease the volume and weight of the transformer, save a magnetic core, and decrease or eliminate the magnetic core loss.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: May 5, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Tianyue Zhao, Masakazu Okamura, Weiqing Guo
  • Patent number: 10479604
    Abstract: System and method for item management are provided. The system includes storage compartments, a scanner on each storage compartment, a memory, and at least one processor. Each scanner is configured to scan an identification code on an item that is picked up from and placed down in the storage compartment. The processor is coupled to the scanner and the memory. The processor is configured to: decode an identification code on an item scanned by one scanner; generate decoding information for the identification code upon a successful decoding; determine an operation type of the item based on the scanning of the identification code on the item; obtain item location information for the identification code, based on the one scanner for the identification code; and update item management information according to the decoding information, the item location information, and the operation type of the item for the identification code.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: November 19, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lihua Geng, Masakazu Okamura
  • Publication number: 20190287466
    Abstract: A backlight brightness control method and a backlight brightness control device are provided. The backlight brightness control method includes: acquiring a luminous brightness value of a display panel; determining a relationship between the luminous brightness value and a preset brightness value by a brightness control circuit; transmitting an adjusted current value to a backlight driver module according to the relationship by the brightness control circuit; and generating a current having the adjusted current value by the backlight driver module to drive a backlight module in the display panel to emit light.
    Type: Application
    Filed: December 20, 2017
    Publication date: September 19, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xinshe YIN, Masakazu OKAMURA
  • Patent number: 10396591
    Abstract: The present disclosure discloses a standby control circuit and an operating method thereof, and a playing apparatus. The standby control circuit includes a controller and a standby power supply, the controller is configured to transmit a power-on signal to enable the playing apparatus to enter into a power-on state, the controller is further configured to transmit a standby signal to enable the playing apparatus to enter into a standby state, and the standby power supply is configured to supply power to a micro control unit of the playing apparatus under the condition that the playing apparatus is in the power-on state and stop supplying power to the micro control unit of the playing apparatus under the condition that the playing apparatus is in the standby state.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: August 27, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tianyue Zhao, Masakazu Okamura
  • Patent number: 10277124
    Abstract: Provided are a boosting unit, a DC-DC converter including the boosting unit, and an electric vehicle. The DC-DC converter includes: a switch connected to an input voltage; a main diode connected to the switch; a regulating capacitor, a first terminal of the regulating capacitor being connected in series with the main diode, a second terminal of the regulating capacitor being connected to the input voltage, and the first terminal and the second terminal of the regulating capacitor serving as output terminals of the DC-DC converter; and a boosting unit, the boosting unit comprising a first inductor, a second inductor, a boosting capacitor, a first unidirectional conducting device, a second unidirectional conducting device, a third unidirectional conducting device and a fourth unidirectional conducting device. According to the embodiments of the present disclosure, voltage gain can be increased by replacing inductors in the ordinary DC-DC converter with the boosting unit.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 30, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enhui Guan, Masakazu Okamura, Shuo Chen
  • Patent number: 10199923
    Abstract: The present disclosure provides a discharging circuit, a power supply, and a display device for a rapid discharging, without causing any inconveniences to a user. The discharging circuit comprises a controlling section and a discharging section, wherein a controlling section is connected to a control voltage inputting terminal and a control node, and configured to adjust a voltage at the control node, under the control of a control voltage inputted from the control voltage inputting terminal; and a discharging section is connected to the control node, a first level terminal and a discharge voltage inputting terminal, and configured to conduct a connection between the discharge voltage inputting terminal and the first level terminal, under the control of the voltage at the control node, so as to discharge the discharge voltage inputting terminal through the first level terminal. Embodiments of the present disclosure may be used in the manufacture of display devices.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: February 5, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanfu Li, Masakazu Okamura, Zhigang Zhou, Jifeng Tan
  • Patent number: 10194807
    Abstract: A body surface thermometer and a wearable temperature measuring device are disclosed. The body surface thermometer includes an infrared temperature sensor and a shielding protective hood disposed outside the infrared temperature sensor, and the shielding protective hood is an infrared ray shielding protective hood. With the body surface thermometer, the measuring precision of surface temperature of a target object can be promoted, thereby raising the freedom degree of test.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: February 5, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Masakazu Okamura
  • Publication number: 20180316263
    Abstract: Provided are a boosting unit, a DC-DC converter including the boosting unit, and an electric vehicle. The DC-DC converter includes: a switch connected to an input voltage; a main diode connected to the switch; a regulating capacitor, a first terminal of the regulating capacitor being connected in series with the main diode, a second terminal of the regulating capacitor being connected to the input voltage, and the first terminal and the second terminal of the regulating capacitor serving as output terminals of the DC-DC converter; and a boosting unit, the boosting unit comprising a first inductor, a second inductor, a boosting capacitor, a first unidirectional conducting device, a second unidirectional conducting device, a third unidirectional conducting device and a fourth unidirectional conducting device. According to the embodiments of the present disclosure, voltage gain can be increased by replacing inductors in the ordinary DC-DC converter with the boosting unit.
    Type: Application
    Filed: June 28, 2017
    Publication date: November 1, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Enhui GUAN, Masakazu OKAMURA, Shuo CHEN
  • Publication number: 20180273294
    Abstract: System and method for item management are provided. The system includes storage compartments, a scanner on each storage compartment, a memory, and at least one processor. Each scanner is configured to scan an identification code on an item that is picked up from and placed down in the storage compartment. The processor is coupled to the scanner and the memory. The processor is configured to: decode an identification code on an item scanned by one scanner; generate decoding information for the identification code upon a successful decoding; determine an operation type of the item based on the scanning of the identification code on the item; obtain item location information for the identification code, based on the one scanner for the identification code; and update item management information according to the decoding information, the item location information, and the operation type of the item for the identification code.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lihua Geng, Masakazu OKAMURA
  • Publication number: 20180219470
    Abstract: The present disclosure provides a discharging circuit, a power supply, and a display device for a rapid discharging, without causing any inconveniences to a user. The discharging circuit comprises a controlling section and a discharging section, wherein a controlling section is connected to a control voltage inputting terminal and a control node, and configured to adjust a voltage at the control node, under the control of a control voltage inputted from the control voltage inputting terminal; and a discharging section is connected to the control node, a first level terminal and a discharge voltage inputting terminal, and configured to conduct a connection between the discharge voltage inputting terminal and the first level terminal, under the control of the voltage at the control node, so as to discharge the discharge voltage inputting terminal through the first level terminal. Embodiments of the present disclosure may be used in the manufacture of display devices.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 2, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD
    Inventors: Yanfu Li, Masakazu Okamura, Zhigang Zhou, Jifeng Tan
  • Publication number: 20180204673
    Abstract: Provided are a transformer and a power supply board including the transformer, the transformer includes: a power supply circuit, wherein the power supply circuit includes a power supply antenna and the power supply circuit is configured to transmit electric power through the power supply antenna; and a power receiving circuit, wherein the power receiving circuit includes a power receiving antenna and the power receiving circuit is configured to receive the electric power transmitted by the power supply antenna through the power receiving antenna. The transformer uses the principle of resonance wireless charging so as to improve the working frequency of the transformer, decrease the volume and weight of the transformer, save a magnetic core, and decrease or eliminate the magnetic core loss.
    Type: Application
    Filed: January 3, 2017
    Publication date: July 19, 2018
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Tianyue Zhao, Masakazu Okamura, Weiqing Guo