Patents by Inventor Takao Katoh
Takao Katoh 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: 8684938Abstract: A biological condition evaluation apparatus determines a symptom of a heart abnormality based on at least one index calculated from a heartbeat interval and/or a pulse interval. The apparatus determines whether it is in a referential period where an amount of change in the index is comparatively small. The apparatus determines whether a plurality of conditions are satisfied or not in an evaluation period set after the referential period. One condition is that an amount of change in the index in the evaluation period is greater than that observed during the referential period. Another condition is that a rate of change in the index is equal to or greater than a predetermined threshold value. The apparatus determines that there is a symptom of a heart abnormality, when both the conditions are satisfied.Type: GrantFiled: January 18, 2010Date of Patent: April 1, 2014Assignees: DENSO CORPORATION, Nippon Medical School Foundation, Toyota Jidosha Kabushiki KaishaInventors: Kazuhiro Sakai, Shinji Nanba, Takao Katoh, Motohisa Osaka, Yoshitaka Fuwamoto
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Patent number: 8548578Abstract: A living body state monitor apparatus includes: a living body information acquisition device to acquire living body information containing an electrocardiography waveform and a pulse waveform from a user; an irregular heartbeat detection section to detect an irregular heartbeat from the electrocardiography waveform; and a pulse wave feature quantity extraction section to extract a pulse wave feature quantity from a pulse wave corresponding to the irregular heartbeat. Further, a living body state determination section is included to determine a danger degree on user's living body state using both of (A) information on kind and/or continued time period of an irregular heartbeat detected by the irregular heartbeat detection section, and (B) a pulse wave feature quantity extracted by the pulse wave feature quantity extraction section, and/or a variation of the extracted pulse wave feature quantity.Type: GrantFiled: October 13, 2011Date of Patent: October 1, 2013Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha, Nippon Medical School FoundationInventors: Shinya Matsunaga, Shinji Nanba, Tsuyoshi Nakagawa, Kouki Futatsuyama, Takao Katoh, Hiroshige Murata, Hiroshi Hayashi, Motohisa Osaka, Minoru Makiguchi
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Publication number: 20120095358Abstract: A living body state monitor apparatus includes: a living body information acquisition device to acquire living body information containing an electrocardiography waveform and a pulse waveform from a user; an irregular heartbeat detection section to detect an irregular heartbeat from the electrocardiography waveform; and a pulse wave feature quantity extraction section to extract a pulse wave feature quantity from a pulse wave corresponding to the irregular heartbeat. Further, a living body state determination section is included to determine a danger degree on user's living body state using both of (A) information on kind and/or continued time period of an irregular heartbeat detected by the irregular heartbeat detection section, and (B) a pulse wave feature quantity extracted by the pulse wave feature quantity extraction section, and/or a variation of the extracted pulse wave feature quantity.Type: ApplicationFiled: October 13, 2011Publication date: April 19, 2012Applicants: DENSO CORPORATION, Nippon Medical School Foundation, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya MATSUNAGA, Shinji Nanba, Tsuyoshi Nakagawa, Kouki Futatsuyama, Takao Katoh, Hiroshige Murata, Hiroshi Hayashi, Motohisa Osaka, Minoru Makiguchi
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Patent number: 7945313Abstract: An heart rhythm monitoring device for a vehicle, which determines whether a driver has an arrhythmia includes a vehicle state determining portion that determines whether the vehicle is stopped; an electrode arranged on a steering wheel in a position where the driver grips the steering wheel; an electrocardiogram waveform obtaining portion that obtains a first electrocardiogram waveform from the electrode; and a signal processing and calculating portion that determines whether the heart rhythm of the driver is erratic based on the first electrocardiogram waveform. When the vehicle is in motion, the signal processing and calculating portion determines whether the heart rhythm of the driver is erratic based on the waveform component that is strong with respect to noise in the first electrocardiogram waveform.Type: GrantFiled: May 10, 2007Date of Patent: May 17, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Medical School Foundation, Denso CorporationInventors: Yoshitaka Fuwamoto, Takao Katoh, Tsuyoshi Nakagawa, Taiji Kawachi
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Publication number: 20100185101Abstract: A biological condition evaluation apparatus determines a symptom of a heart abnormality based on at least one index calculated from a heartbeat interval and/or a pulse interval. The apparatus determines whether it is in a referential period where an amount of change in the index is comparatively small. The apparatus determines whether a plurality of conditions are satisfied or not in an evaluation period set after the referential period. One condition is that an amount of change in the index in the evaluation period is greater than that observed during the referential period. Another condition is that a rate of change in the index is equal to or greater than a predetermined threshold value. The apparatus determines that there is a symptom of a heart abnormality, when both the conditions are satisfied.Type: ApplicationFiled: January 18, 2010Publication date: July 22, 2010Applicants: DENSO CORPORATION, NIPPON MEDICAL SCHOOL FOUNDATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhiro SAKAI, Shinji NANBA, Takao KATOH, Motohisa OSAKA, Yoshitaka FUWAMOTO
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Publication number: 20070265540Abstract: An heart rhythm monitoring device for a vehicle, which determines whether a driver has an arrhythmia includes a vehicle state determining portion that determines whether the vehicle is stopped; an electrode arranged on a steering wheel in a position where the driver grips the steering wheel; an electrocardiogram waveform obtaining portion that obtains a first electrocardiogram waveform from the electrode; and a signal processing and calculating portion that determines whether the heart rhythm of the driver is erratic based on the first electrocardiogram waveform. When the vehicle is in motion, the signal processing and calculating portion determines whether the heart rhythm of the driver is erratic based on the waveform component that is strong with respect to noise in the first electrocardiogram waveform.Type: ApplicationFiled: May 10, 2007Publication date: November 15, 2007Inventors: Yoshitaka Fuwamoto, Takao Katoh, Tsuyoshi Nakagawa, Taiji Kawachi
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Patent number: 5168272Abstract: A network system for transmitting vehicle data has a bidirectional multidrop ring in which data communication between data transmitting nodes and corresponding data receiving nodes is carried out even if a breakage or some other trouble occurs at a portion of the multidrop ring. This system ensures safe and reliable control of various vehicle loads for a long period of time. At least one multidrop bus or at least one further bidirectional multidrop ring may be electrically connected to the first-mentioned bidirectional multidrop ring, thereby widening the applicability of the system to the control of vehicle loads.Type: GrantFiled: September 11, 1990Date of Patent: December 1, 1992Assignee: Fujikura Ltd.Inventors: Kazuya Akashi, Nobumasa Misaki, Daisuke Manago, Takao Katoh, Kimitaka Ishida