Patents by Inventor Yuji SAEGUSA
Yuji SAEGUSA 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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Patent number: 12004073Abstract: A closed subscriber group (CSG) cell is a cell that allows use of subscribers. In order to receive the service by the CSG cell, a CSG-ID is required to be notified to a user equipment, which cannot be obtained in a situation outside the reach of radio waves from a non-CSG cell. In a mobile communication system including base stations respectively provided to a CSG cell and a non-CSG cell in which access is made to the CSG cell with the use of a CSG-ID issued in a case where use of the CSG cell is allowed, the base station provided in the CSG cell refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network, and the core network determines whether the user equipment is allowed to use the CSG cell and, in the case where the use is allowed, transmits a signal for allowing assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the use of the CSG-ID.Type: GrantFiled: April 27, 2022Date of Patent: June 4, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Miho Maeda, Mitsuru Mochizuki, Taiga Saegusa, Yasushi Iwane, Yuji Kakehi, Masayuki Nakazawa, Taisei Suemitsu
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Publication number: 20240073787Abstract: A closed subscriber group (CSG) cell allows use of subscribers. To receive the service by the CSG cell, a CSG-ID is notified to a user equipment, but cannot be obtained outside the reach of radio waves from a non-CSG cell. Base stations respectively provided to a CSG cell and a non-CSG cell, and access is made to the CSG cell with the use of a CSG-ID issued when use of the CSG cell is allowed, the base station refers to the notified identification information of a user equipment and then transmits a tracking area update request from the user equipment to a core network. The core network determines whether the user equipment is allowed to use the CSG cell and, if allowed, transmits a signal for assignment of radio resources to the user equipment and the CSG-ID. The user equipment accesses the CSG cell with the CSG-ID.Type: ApplicationFiled: November 9, 2023Publication date: February 29, 2024Applicant: Mitsubishi Electric CorporationInventors: Miho MAEDA, Mitsuru MOCHIZUKI, Taiga SAEGUSA, Yasushi IWANE, Yuji KAKEHI, Masayuki NAKAZAWA, Taisei SUEMITSU
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Patent number: 11770092Abstract: A bridge circuit includes a high-side transistor connected between a power supply terminal and an output terminal, and a low-side transistor connected between the output terminal and a ground terminal. A high-side pre-driver and a low-side pre-driver drive the high-side transistor and the low-side transistor. A first transistor is connected between the output terminal and the ground terminal in a manner to form the regenerative path parallel to the low-side transistor. In a regenerative state in which a current sinks from the output terminal, a regenerative control circuit controls the voltage of a control terminal of the first transistor in a manner that an output voltage of the output terminal approaches a target voltage higher than the power supply voltage of the power supply terminal by a first voltage width.Type: GrantFiled: August 2, 2022Date of Patent: September 26, 2023Assignee: ROHM CO., LTD.Inventors: Yuji Saegusa, Joji Noie
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Publication number: 20230042290Abstract: A bridge circuit includes a high-side transistor connected between a power supply terminal and an output terminal, and a low-side transistor connected between the output terminal and a ground terminal. A high-side pre-driver and a low-side pre-driver drive the high-side transistor and the low-side transistor. A first transistor is connected between the output terminal and the ground terminal in a manner to form the regenerative path parallel to the low-side transistor. In a regenerative state in which a current sinks from the output terminal, a regenerative control circuit controls the voltage of a control terminal of the first transistor in a manner that an output voltage of the output terminal approaches a target voltage higher than the power supply voltage of the power supply terminal by a first voltage width.Type: ApplicationFiled: August 2, 2022Publication date: February 9, 2023Inventors: Yuji SAEGUSA, Joji NOIE
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Publication number: 20220352840Abstract: The present disclosure provides a motor driving circuit of capable of stopping operation within a short period of time. A bridge circuit of the present disclosure is connected to a fan motor. In response to a stop instruction, a control logic circuit fixes an upper arm of a source phase in which a current flows out to be off in the bridge circuit, and maintains statuses of other upper arms and lower arms. The control logic circuit then fixes the upper arms and the lower arms of all phases of the bridge circuit to be off.Type: ApplicationFiled: April 26, 2022Publication date: November 3, 2022Inventors: Hiroyuki SHIMIZU, Joji NOIE, Shinsuke SANO, Yuji SAEGUSA
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Publication number: 20220301821Abstract: There is provided a gas treatment apparatus for performing gas treatment on a substrate. The gas treatment apparatus includes: a chamber in which the substrate is accommodated; a gas supply mechanism configured to individually supply a fluorine-containing gas and an alkaline gas; and a gas introduction member configured to cause the fluorine-containing gas and the alkaline gas supplied from the gas supply mechanism to merge with each other and introduce a mixed gas in which the fluorine-containing gas and the alkaline gas are mixed into the chamber. A portion of the gas introduction member including a merging point of the fluorine-containing gas and the alkaline gas is made of an aluminum-based material. A resin coating is formed on at least the portion including the merging point.Type: ApplicationFiled: March 4, 2022Publication date: September 22, 2022Inventors: Yuji SAEGUSA, Tatsuya HANDA, Reiko SASAHARA, Kenshiro ASAHI, Kazuaki NISHIMURA, Akihiro YOSHIMURA, Masaki FURUSAWA
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Patent number: 11101777Abstract: An output OUT is coupled to a load. A high-side transistor MH is arranged such that its source is coupled to a power supply line, and such that its drain is coupled to an output terminal OUT. A first OCP circuit compares a first current detection signal ICS1 that corresponds to a current ISRC that flows through the high-side transistor MH with a first threshold value IOCP having a positive correlation with a power supply voltage VDD of a power supply line, and generates a first OCP signal SOCP that indicates the comparison result. A driving circuit latch-stops the driving operation of the high-side transistor MH according to the first OCP signal SOCP.Type: GrantFiled: May 28, 2019Date of Patent: August 24, 2021Assignee: ROHM CO., LTD.Inventor: Yuji Saegusa
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Patent number: 10734955Abstract: An audio amplifier of a BTL (Bridged Tied Load) type, includes a first amplifier, a second amplifier, a first output pin connected to an output of the first amplifier, a second output pin connected to an output of the second amplifier, a first monitor pin, a second monitor pin, a current source connected to the first monitor pin and configured to be switched on and off, a switch interposed between the second monitor pin and a fixed voltage line, and a load state determination circuit configured to detect a state of a load based on a potential difference between the first monitor pin and the second monitor pin.Type: GrantFiled: March 22, 2019Date of Patent: August 4, 2020Assignee: ROHM CO., LTD.Inventors: Yuji Saegusa, Keita Okamoto
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Publication number: 20190363681Abstract: An output OUT is coupled to a load. A high-side transistor MH is arranged such that its source is coupled to a power supply line, and such that its drain is coupled to an output terminal OUT. A first OCP circuit compares a first current detection signal ICS1 that corresponds to a current ISRC that flows through the high-side transistor MH with a first threshold value IOCP having a positive correlation with a power supply voltage VDD of a power supply line, and generates a first OCP signal SOCP that indicates the comparison result. A driving circuit latch-stops the driving operation of the high-side transistor MH according to the first OCP signal SOCP.Type: ApplicationFiled: May 28, 2019Publication date: November 28, 2019Inventor: Yuji SAEGUSA
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Publication number: 20190305737Abstract: An audio amplifier of a BTL (Bridged Tied Load) type, includes a first amplifier, a second amplifier, a first output pin connected to an output of the first amplifier, a second output pin connected to an output of the second amplifier, a first monitor pin, a second monitor pin, a current source connected to the first monitor pin and configured to be switched on and off, a switch interposed between the second monitor pin and a fixed voltage line, and a load state determination circuit configured to detect a state of a load based on a potential difference between the first monitor pin and the second monitor pin.Type: ApplicationFiled: March 22, 2019Publication date: October 3, 2019Inventors: Yuji SAEGUSA, Keita OKAMOTO