Patents by Inventor Kazunori Itou
Kazunori Itou 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: 11888399Abstract: In a first mode, a first feedback controller generates a first control signal SCTRL1 based on a signal at a first feedback pin, so as to control a first pre-driver. A second feedback controller ¥ generates a second control signal based on a signal at a second feedback pin, so as to control a second pre-driver. In a second mode, the first feedback controller ¥ generates the first control signal based on a signal at the first feedback pin, so as to control the first pre-driver. The second pre-driver drives the second pre-driver based on a third control signal received from a first circuit block.Type: GrantFiled: May 13, 2021Date of Patent: January 30, 2024Assignee: ROHM CO., LTD.Inventor: Kazunori Itou
-
Control circuit of DC/DC converter, DC/DC converter, power management circuit, and solid state drive
Patent number: 11177739Abstract: A control circuit of a DC/DC converter includes: an error amplifier configured to generate an error voltage corresponding to an error between a feedback voltage based on an output voltage of the DC/DC converter and a reference voltage; a pulse modulator configured to generate a control pulse corresponding to the error voltage; and an auxiliary circuit configured to be enabled, when the output voltage of the DC/DC converter is decreased, to compare the feedback voltage with a ramp signal that decreases with time, and source or sink an auxiliary current to an output of the error amplifier according to a result of the comparison.Type: GrantFiled: September 20, 2019Date of Patent: November 16, 2021Assignee: ROHM CO., LTD.Inventor: Kazunori Itou -
Publication number: 20210265914Abstract: In a first mode, a first feedback controller generates a first control signal SCTRL1 based on a signal at a first feedback pin, so as to control a first pre-driver. A second feedback controller ¥ generates a second control signal based on a signal at a second feedback pin, so as to control a second pre-driver. In a second mode, the first feedback controller ¥ generates the first control signal based on a signal at the first feedback pin, so as to control the first pre-driver. The second pre-driver drives the second pre-driver based on a third control signal received from a first circuit block.Type: ApplicationFiled: May 13, 2021Publication date: August 26, 2021Inventor: Kazunori ITOU
-
CONTROL CIRCUIT OF DC/DC CONVERTER, DC/DC CONVERTER, POWER MANAGEMENT CIRCUIT, AND SOLID STATE DRIVE
Publication number: 20200099301Abstract: A control circuit of a DC/DC converter includes: an error amplifier configured to generate an error voltage corresponding to an error between a feedback voltage based on an output voltage of the DC/DC converter and a reference voltage; a pulse modulator configured to generate a control pulse corresponding to the error voltage; and an auxiliary circuit configured to be enabled, when the output voltage of the DC/DC converter is decreased, to compare the feedback voltage with a ramp signal that decreases with time, and source or sink an auxiliary current to an output of the error amplifier according to a result of the comparison.Type: ApplicationFiled: September 20, 2019Publication date: March 26, 2020Inventor: Kazunori ITOU -
Patent number: 5237599Abstract: In order to perform stereoradiography, an X-ray apparatus utilizes an X-ray tube having a pair of X-ray focal points. The X-ray beams are alternately irradiated from the focal points toward an image intensifier through a patient and are limited by an X-ray beam limiting device. The device shapes the irradiated X-ray beams onto a circular detection surface of the image intensifier into a polygon such as octagon. The X-ray irradiation field on the detection surface can be circumscribed to a circular input window (i.e. effective input area), preventing the field from going beyond the detection surface. Thus, direct X-ray leaking over the image intensifier is avoidable.Type: GrantFiled: November 13, 1991Date of Patent: August 17, 1993Assignee: Kabushiki Kaisha ToshibaInventors: Teruomi Gunji, Kazunori Itou
-
Patent number: 5092281Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: July 24, 1989Date of Patent: March 3, 1992Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Kunitoshi Watanabe, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu, Mamoru Takeda
-
Patent number: 5088452Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: February 18, 1992Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Kunitoshi Watanabe, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu, Mamoru Takeda
-
Patent number: 5082048Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: January 21, 1992Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu
-
Patent number: 5067447Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: November 26, 1991Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Kunitoshi Watanabe, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu, Mamoru Takeda