Patents by Inventor Yuji GODA
Yuji GODA 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: 11662109Abstract: A gas detector is provided and includes a gas detector element, electronics to interface with the gas detector element and an enclosure configured to expose the gas detector element to an exterior and to form an electronics housing area in which the electronics are disposed whereby the electronics are isolated from the exterior.Type: GrantFiled: June 5, 2020Date of Patent: May 30, 2023Assignee: CARRIER CORPORATIONInventors: Jason R. Kondrk, Linus Hjern, Joakim Enerud, Yuji Goda, Martin Lownertz, Mats Olsson
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Publication number: 20220373526Abstract: A change rate of in-vehicle carbon dioxide concentration at an optional time point when the vehicle is in a parked state is estimated on the basis of detection signals of a CO2 concentration sensor at two different time points when in the parked state; and on the basis of a detection signal of the CO2 concentration sensor at the optional time point, a preset time constant of concentration change of the in-vehicle carbon dioxide concentration, and the estimated change rate, the in-vehicle carbon dioxide concentration at a time point when a predetermined time according to the time constant has elapsed since the optional time point is estimated (steps S4 to S7). A detection target organism is determined to be present in the vehicle when the estimated in-vehicle carbon dioxide concentration is equal to or more than a threshold value set according to the detection target organism (steps S8 and S9).Type: ApplicationFiled: November 5, 2020Publication date: November 24, 2022Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Henrik Rodjegard, Yuji Goda
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Patent number: 11287372Abstract: A gas sensor module (100) includes an infrared light emitting diode (10) configured to emit infrared light in accordance with a drive current, a quantum infrared sensor (20) configured to detect infrared light that passes through a detection target gas, a drive circuit (30) configured to output the drive current to the infrared light emitting diode (10), a charging circuit (50) to be connected to a power source and configured to output a charge current having a smaller current amount than the drive current, and a capacitor (40) configured to charge by the charge current being supplied from the charging circuit (50) and discharge by supplying the drive current to the drive circuit (30).Type: GrantFiled: March 15, 2021Date of Patent: March 29, 2022Assignee: Asahi Kasei Microdevices CorporationInventors: Yoshihiko Koizumi, Yuji Goda, Maksym Bryzgalov
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Publication number: 20210285872Abstract: A gas sensor module (100) includes an infrared light emitting diode (10) configured to emit infrared light in accordance with a drive current, a quantum infrared sensor (20) configured to detect infrared light that passes through a detection target gas, a drive circuit (30) configured to output the drive current to the infrared light emitting diode (10), a charging circuit (50) to be connected to a power source and configured to output a charge current having a smaller current amount than the drive current, and a capacitor (40) configured to charge by the charge current being supplied from the charging circuit (50) and discharge by supplying the drive current to the drive circuit (30).Type: ApplicationFiled: March 15, 2021Publication date: September 16, 2021Applicant: Asahi Kasei Microdevices CorporationInventors: Yoshihiko KOIZUMI, Yuji GODA, Maksym BRYZGALOV
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Publication number: 20200386431Abstract: A gas detector is provided and includes a gas detector element, electronics to interface with the gas detector element and an enclosure configured to expose the gas detector element to an exterior and to form an electronics housing area in which the electronics are disposed whereby the electronics are isolated from the exterior.Type: ApplicationFiled: June 5, 2020Publication date: December 10, 2020Inventors: Jason R. Kondrk, Linus Hjern, Joakim Enerud, Yuji Goda, Martin Lownertz, Mats Olsson
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Optical concentration measuring device and control method for optical concentration measuring device
Patent number: 10677721Abstract: An optical concentration measuring device capable of power saving and lifespan extension of a light source is provided, including a light source emitting an amount of light corresponding to a supplied power; a light detection part receiving at least a part of the light emitted by the light source and generating a signal corresponding an amount of received light as an output signal; a smoothing filter smoothing a signal based on the output signal; a signal change amount calculation part calculating a first and a second change amounts corresponding to a change amount between at least two selected acquisition values selected from acquisition values based on the output signal at current or past time; a light source control part controlling the power supplied to the light source based on the first change amount; and a filter control part controlling characteristics of the smoothing filter based on the second change amount.Type: GrantFiled: December 17, 2018Date of Patent: June 9, 2020Assignee: Asahi Kasei Microdevices CorporationInventor: Yuji Goda -
Patent number: 10638581Abstract: A light-emitting/receiving device including: a diode-type light-emitting element formed on a semiconductor substrate; a diode-type light-receiving element formed on the semiconductor substrate; a light source driving unit configured to supply a first common voltage to an anode or a cathode of the light-emitting element to drive the light-emitting element; and a light signal processing unit configured to perform current/voltage conversion on an output current outputted from the light-receiving element, by referring to a second common voltage.Type: GrantFiled: December 20, 2018Date of Patent: April 28, 2020Assignee: Asahi Kasei Microdevices CorporationInventors: Yuta Takagi, Yuji Goda
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OPTICAL CONCENTRATION MEASURING DEVICE AND CONTROL METHOD FOR OPTICAL CONCENTRATION MEASURING DEVICE
Publication number: 20190195785Abstract: An optical concentration measuring device capable of power saving and lifespan extension of a light source is provided, including a light source emitting an amount of light corresponding to a supplied power; a light detection part receiving at least a part of the light emitted by the light source and generating a signal corresponding an amount of received light as an output signal; a smoothing filter smoothing a signal based on the output signal; a signal change amount calculation part calculating a first and a second change amounts corresponding to a change amount between at least two selected acquisition values selected from acquisition values based on the output signal at current or past time; a light source control part controlling the power supplied to the light source based on the first change amount; and a filter control part controlling characteristics of the smoothing filter based on the second change amount.Type: ApplicationFiled: December 17, 2018Publication date: June 27, 2019Applicant: Asahi Kasei Microdevices CorporationInventor: Yuji Goda -
Publication number: 20190124738Abstract: A light-emitting/receiving device including: a diode-type light-emitting element formed on a semiconductor substrate; a diode-type light-receiving element formed on the semiconductor substrate; a light source driving unit configured to supply a first common voltage to an anode or a cathode of the light-emitting element to drive the light-emitting element; and a light signal processing unit configured to perform current/voltage conversion on an output current outputted from the light-receiving element, by referring to a second common voltage.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Yuta TAKAGI, Yuji GODA
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Patent number: 9980336Abstract: Alight receiving device is equipped with a first light receiving element which outputs a first output signal corresponding to an amount of received light, a temperature information acquisition unit which acquires temperature information of the first light receiving element, a generation unit which generates compensating information of the first output signal, based on first output signals and temperature information when power is supplied to the first light receiving element in a plurality of power supply conditions and stores the same in a storage unit, and a compensation unit which compensates the first output signal, based on the temperature information and the compensating information when the first output signal is output. Thus, even when temperature characteristics of an optical element are varied, the temperature characteristics are compensated highly accurately.Type: GrantFiled: September 18, 2017Date of Patent: May 22, 2018Assignee: Asahi Kasei Microdevices CorporationInventor: Yuji Goda
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Publication number: 20180092181Abstract: Alight receiving device is equipped with a first light receiving element which outputs a first output signal corresponding to an amount of received light, a temperature information acquisition unit which acquires temperature information of the first light receiving element, a generation unit which generates compensating information of the first output signal, based on first output signals and temperature information when power is supplied to the first light receiving element in a plurality of power supply conditions and stores the same in a storage unit, and a compensation unit which compensates the first output signal, based on the temperature information and the compensating information when the first output signal is output. Thus, even when temperature characteristics of an optical element are varied, the temperature characteristics are compensated highly accurately.Type: ApplicationFiled: September 18, 2017Publication date: March 29, 2018Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventor: Yuji GODA