Patents by Inventor Hiroyuki Furukawa

Hiroyuki Furukawa 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: 20240379054
    Abstract: A display device includes a plurality of pixel circuits each including a self-luminous element and a switching element that performs switching between light emission and non-light emission of the self-luminous element, the plurality of pixel circuits being provided respectively corresponding to a plurality of pixels, and a control circuit that controls each of the plurality of pixel circuits in response to an image signal of an image to be displayed. The control circuit controls switching between the light emission and the non-light emission by the switching element and thus the self-luminous element emits light at least in a certain period from the start of the dimming control period and a certain period until the end of the dimming control period.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 14, 2024
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, Chie TORIDONO
  • Publication number: 20240379051
    Abstract: A display device includes a display panel that includes a deterioration characteristic acquisition unit that acquires deterioration characteristic data indicating a degree of deterioration of each of a plurality of pixels, a deterioration characteristic storage unit that compresses the deterioration characteristic data, stores the compressed deterioration characteristic data, and decompresses the stored deterioration characteristic data, a display region shifting unit that generates, from an input image data, shifted image data in which a display region is shifted along a display surface of the display panel, a deterioration compensation unit that generates control data obtained by transforming the shifted image data using the decompressed deterioration characteristic data, to compensate for the deterioration of each of the plurality of pixels, and a drive unit that drives the display panel using the control data, to display the input image in the shifted display region.
    Type: Application
    Filed: October 15, 2021
    Publication date: November 14, 2024
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, Chie TORIDONO, Masafumi KAWAI
  • Patent number: 12142770
    Abstract: A carbon material for use as a catalyst carrier for a polymer electrolyte fuel cell which is a porous carbon material and satisfies at the same time (1) the content of a crystallized material is 1.6 or less, (2) the BET specific surface area obtained by a BET analysis of a nitrogen gas adsorption isotherm is from 400 to 1500 m2/g, (3) the cumulative pore volume V2-10 with respect to a pore diameter of from 2 to 10 nm obtained by an analysis of a nitrogen gas adsorption isotherm using the Dollimore-Heal method is from 0.4 to 1.5 mL/g, and (4) the nitrogen gas adsorption amount Vmacro between a relative pressure of 0.95 and 0.99 in a nitrogen gas adsorption isotherm is from 300 to 1200 cc (STP)/g, and the method of producing the same.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 12, 2024
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Takashi Iijima, Kenichiro Tadokoro, Masataka Hiyoshi, Shinya Furukawa, Tomoko Komura, Kazuyoshi Masaki, Hiroyuki Hayashida, Wakana Tada
  • Publication number: 20240355271
    Abstract: A display device includes: a display panel including a plurality of pixels each provided with a first subpixel and a second subpixel; a storage unit that stores degradation information indicating an amount of decrease in light emission efficiency of one of the first subpixel or the second subpixel; and a control unit that corrects an input video signal, input from outside, in accordance with the degradation information, and generates a video signal to be supplied to each of the first subpixel and the second subpixel.
    Type: Application
    Filed: August 16, 2021
    Publication date: October 24, 2024
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, Chie TORIDONO
  • Patent number: 12117091
    Abstract: A solenoid valve in which a plunger is disposed in an accommodation space inside a solenoid unit, includes: a first breathing flow passage extending in a circumferential direction on an outer periphery of a stator to communicate with an outside of the solenoid valve; a second breathing flow passage extending from the first breathing flow passage in an axial direction at a part in the circumferential direction to communicate with a first space formed between the stator, a sleeve, and a spool; and a third breathing flow passage extending in the axial direction on an inner periphery of the stator to allow communication between the first space and a second space.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: October 15, 2024
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Hiroyuki Iwanaga, Yoshinari Kasagi, Kenta Furukawa
  • Patent number: 12057589
    Abstract: Provided are a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, the carbon material being a porous carbon material and simultaneously satisfying (1) an intensity ratio (I750/Ipeak) of an intensity at 750° C. (I750) and a peak intensity in a vicinity of 690° C. (Ipeak) is 0.10 or less; (2) a BET specific surface area is from 400 to 1,500 m2/g; (3) an integrated pore volume V2-10 of a pore diameter of from 2 to 10 nm is from 0.4 to 1.5 mL/g; and (4) a nitrogen gas adsorption amount Vmacro at a relative pressure of from 0.95 to 0.99 in the nitrogen gas adsorption isotherm is from 300 to 1,200 cc(STP)/g, as well as a method of producing the same.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 6, 2024
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Takashi Iijima, Kenichiro Tadokoro, Masataka Hiyoshi, Shinya Furukawa, Tomoko Komura, Kazuyoshi Masaki, Hiroyuki Hayashida, Wakana Tada
  • Publication number: 20240203341
    Abstract: A display device includes a display panel including a group of pixels; a control unit configured to execute deterioration monitoring for detecting a decrease in luminous efficiency of the group of pixels and first high-speed monitoring for determining whether to execute the deterioration monitoring, the first high-speed monitoring being executed at a faster speed than the deterioration monitoring; and a storage unit configured to store reference data specifying an acceptable range for executing the deterioration monitoring. The control unit executes the deterioration monitoring in a case where a first high-speed monitoring measurement value obtained by the first high-speed monitoring is within the acceptable range.
    Type: Application
    Filed: June 14, 2021
    Publication date: June 20, 2024
    Inventors: Mohammad Reza KAZEMI, MASAFUMI UENO, MASAAKI MORIYA, NAOKI SHIOBARA, Masafumi KAWAI, HIROYUKI FURUKAWA
  • Patent number: 11908361
    Abstract: The display device is provided with a degree-of-degradation calculating circuit that determines a degree of degradation representing a level of degradation of a compensation-target circuit element included in each of K pixel circuits which are some or all of a plurality of pixel circuits; a variation coefficient calculating circuit that calculates, as a variation coefficient, a value depending on a deviation determined based on degrees of degradation of the K pixel circuits; a reference luminance setting circuit that sets, based on the variation coefficient, reference luminance for determining display luminance of each display element after degradation compensation; and a compensation computing circuit that compensates for degradation of the compensation-target circuit elements by correcting input video signals based on the reference luminance and the degree of degradation of each of the K pixel circuits, upon generating video signals to be supplied to the plurality of pixel circuits.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: February 20, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Chie Toridono, Masafumi Ueno
  • Patent number: 11902167
    Abstract: An object is to provide a communication apparatus, a communication method, and a program capable of avoiding an increase in network load when input traffic continues to be large and a communication delay when input traffic is very small. A communication apparatus according to the present invention prepares three token buckets and can transfer, discard, or hold a packet in accordance with the amount of tokens in each token bucket. This enables the communication apparatus to operate so as not to exceed a set maximum bandwidth when large traffic is received for the delay guarantee shaping. Further, When the maximum bandwidth is exceeded, the communication apparatus can select whether to discard a packet to prioritize a delay guarantee or to hold a packet to prioritize no loss of packets. Furthermore, the communication apparatus can immediately transmit a packet without increasing a communication delay when input traffic is very small.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: February 13, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tatsuya Fukui, Katsuya Minami, Yuki Sakaue, Hiroyuki Furukawa
  • Publication number: 20230368708
    Abstract: The display device is provided with a degree-of-degradation calculating circuit that determines a degree of degradation representing a level of degradation of a compensation-target circuit element included in each of K pixel circuits which are some or all of a plurality of pixel circuits; a variation coefficient calculating circuit that calculates, as a variation coefficient, a value depending on a deviation determined based on degrees of degradation of the K pixel circuits; a reference luminance setting circuit that sets, based on the variation coefficient, reference luminance for determining display luminance of each display element after degradation compensation; and a compensation computing circuit that compensates for degradation of the compensation-target circuit elements by correcting input video signals based on the reference luminance and the degree of degradation of each of the K pixel circuits, upon generating video signals to be supplied to the plurality of pixel circuits.
    Type: Application
    Filed: October 8, 2020
    Publication date: November 16, 2023
    Inventors: Hiroyuki FURUKAWA, Chie TORIDONO, Masafumi UENO
  • Patent number: 11763732
    Abstract: A display device includes: a light-emitting profile creation circuit creating a first light-emitting profile from a first image signal; and an image signal adjustment circuit adjusting a second image signal in accordance with the first light-emitting profile.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: September 19, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Masafumi Ueno, Naoto Inoue, Chie Toridono
  • Patent number: 11711150
    Abstract: An object is to provide an optical communication system and an optical communication method that are capable of, when assigning wavelengths on a per-service basis and providing services on a per-area basis, preventing degradation of signal quality due to linear crosstalk and preventing an increase in cost and size. An optical communication system according to the present invention includes an optical splitter 300 connecting N first ports and M second ports by a combination of 2×2 fiber optical splitters, N and M each being an integer of two or more, where wavelengths of optical signals to be received are limited for each group of optical receivers 106, by using a correlation between a fused extension length of at least one 2×2 fiber optical splitter directly connected to the first port, among the 2×2 fiber optical splitters, and wavelength output characteristics of the second port of the optical splitter 300.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: July 25, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsuko Kawakita, Kazutaka Hara, Yasutaka Kimura, Kenji Horikawa, Hiroyuki Furukawa
  • Patent number: 11689311
    Abstract: An object is to provide an optical communication system capable of controlling the output ratio by port and by wavelength for incident light of different wavelengths, a method of determining the split ratio of an uneven-split optical splitter for controlling the output ratio by port and by wavelength, and a transmission range determination method for the optical communication system. The split ratio determination method for an uneven-split optical splitter according to the present invention uses the melt-draw distance to adjust the split ratio of each fiber-optic splitter included in the uneven-split optical splitter such that the light output from the farthest ONUs among each of the ports connected under the ports B to M of the uneven-split optical splitter arrives with the minimum reception sensitivity at OLT receivers in a PON system.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 27, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Atsuko Kawakita, Kazutaka Hara, Yasutaka Kimura, Kenji Horikawa, Hiroyuki Furukawa
  • Patent number: 11635837
    Abstract: A display device includes: a temperature distribution obtaining circuit obtaining temperature distribution on a display panel on a basis of a capacitance value signal to be output from a capacitive touch panel overlapping the display panel; and a correcting circuit correcting an input image signal on a basis of the temperature distribution on the display panel, and supplying the input image signal.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: April 25, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Chie Toridono, Masafumi Ueno
  • Publication number: 20230083342
    Abstract: Provided are a wire electric discharge machine, a correction device, and a correction method which accurately correct position information indicating the position of a supporting point of each of an upper guide and a lower guide. The correction device includes: a storage unit that stores the position information; an inclination control unit that causes a wire electrode to incline at a predetermined angle; a measurement unit that measures a relative movement amount from a state in which the lower guide and a measurement site are separated by a predetermined distance in a relative movement direction to a state in which the wire electrode inclined at the predetermined angle reaches the measurement site; and an information, correction unit that corrects the position information of the storage unit on the basis of the predetermined angle and the relative movement amount.
    Type: Application
    Filed: February 19, 2021
    Publication date: March 16, 2023
    Inventors: Tomohito OOSAWA, Hiroyuki FURUKAWA
  • Patent number: 11602146
    Abstract: A connector (1) includes: a tube (10) configured to be arranged in an interior of a vascular channel; a tubular body (30) having an inner wall surface configured to, together with an outer wall surface of the tube (10), sandwich the vascular channel when the tube (10) is arranged in the interior of the vascular channel; and a balloon (20), configured to be arranged on the outer wall surface of the tube (10) or the inner wall surface of the tubular body (30), and radially expand for performing sealing (i) between the soft tubular member and the inner wall surface of the tubular body (30) and (ii) between the soft tubular member and the outer wall surface of the tube (10). A fluid supply system (100) may include the connector (1), and a perfusion solution supply device (120) connected to the connector (1) and configured to supply a perfusion solution into the interior of the vascular channel.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: March 14, 2023
    Assignees: National University Corporation Kitami Institute of Technology, National University Corporation Asahikawa Medical University
    Inventors: Masanori Matsumura, Naoto Matsuno, Jun-Ichi Shibano, Yutaka Yoshida, Michihiro Sato, Hiroyuki Furukawa
  • Publication number: 20230006000
    Abstract: A display device includes: a first subpixel including a quantum dot light-emitting layer configured to emit light of a first color: a second subpixel including a quantum dot light-emitting layer configured to emit light of a second color different from the light of the first color: a third subpixel including a quantum dot light-emitting layer configured to emit light of a third color different from the light of the first color and the light of the second color: and a data processing circuit configured to receive a first input data corresponding to the first subpixel, a second input data corresponding to the second subpixel, and a third input data corresponding to the third subpixel. The data processing circuit generates first output data corresponding to a first data voltage supplied to the first subpixel by using the first input data, the second input data, and the third input data.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 5, 2023
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, Chie TORIDONO, YOSHIHIRO UETA
  • Publication number: 20220360534
    Abstract: An object is to provide a communication apparatus, a communication method, and a program capable of avoiding an increase in network load when input traffic continues to be large and a communication delay when input traffic is very small. A communication apparatus according to the present invention prepares three token buckets and can transfer, discard, or hold a packet in accordance with the amount of tokens in each token bucket. This enables the communication apparatus to operate so as not to exceed a set maximum bandwidth when large traffic is received for the delay guarantee shaping. Further, When the maximum bandwidth is exceeded, the communication apparatus can select whether to discard a packet to prioritize a delay guarantee or to hold a packet to prioritize no loss of packets. Furthermore, the communication apparatus can immediately transmit a packet without increasing a communication delay when input traffic is very small.
    Type: Application
    Filed: July 4, 2019
    Publication date: November 10, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Tatsuya FUKUI, Katsuya MINAMI, Yuki SAKAUE, Hiroyuki FURUKAWA
  • Publication number: 20220319402
    Abstract: A display device includes: a light-emitting profile creation circuit creating a first light-emitting profile from a first image signal; and an image signal adjustment circuit adjusting a second image signal in accordance with the first light-emitting profile.
    Type: Application
    Filed: June 25, 2019
    Publication date: October 6, 2022
    Inventors: HIROYUKI FURUKAWA, MASAFUMI UENO, NAOTO INOUE, Chie TORIDONO
  • Publication number: 20220317818
    Abstract: A display device includes: a temperature distribution obtaining circuit obtaining temperature distribution on a display panel on a basis of a capacitance value signal to be output from a capacitive touch panel overlapping the display panel; and a correcting circuit correcting an input image signal on a basis of the temperature distribution on the display panel, and supplying the input image signal.
    Type: Application
    Filed: March 22, 2022
    Publication date: October 6, 2022
    Inventors: HIROYUKI FURUKAWA, Chie TORIDONO, MASAFUMI UENO