公开(公告)号：US20190320926A1

公开(公告)日：2019-10-24

申请号：US16342174

申请日：2017-09-25

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Nobuaki MATSUURA ,  Kei KUWABARA ,  Takayuki OGASAWARA ,  Ryoichi KASAHARA ,  Koji FUJII

IPC分类号： A61B5/0456 ,  A61B5/00 ,  G16H40/63

摘要： There is provided a heartbeat detection device. The heartbeat detection device includes a time difference value calculation unit (3) configured to calculate a time difference value from a sampling data string of an electrocardiographic waveform of a living body, an index value calculation unit (4) configured to calculate an index value for heartbeat detection based on the time difference value, a threshold setting unit (5) configured to determine whether a peak of the index value exceeding a threshold can be detected, to calculate, when not less than a predetermined number of peaks is consecutively detected, a threshold candidate based on an average value of the predetermined number of the most recent peaks among these peaks, not to update the threshold when the threshold candidate exceeds a threshold limit value based on a difference limit value that is likely be a time difference value of the electrocardiographic waveform of the living body, and to set the threshold candidate as a new threshold when the threshold candidate has a value equal to or less than the threshold limit value, and a heartbeat time determination unit (6) configured to set the sampling time of the peak as the heartbeat time when the peak of the index value exceeding the threshold is detected.

公开(公告)号：US20170281021A1

公开(公告)日：2017-10-05

申请号：US15508068

申请日：2015-08-28

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Nobuaki MATSUURA ,  Kei KUWABARA ,  Kazuhiko TAKAGAHARA ,  Ryusuke KAWANO ,  Hiroshi KOIZUMI

IPC分类号： A61B5/0245 ,  A61B5/0456 ,  A61B5/00

CPC分类号： A61B5/0245 ,  A61B5/02405 ,  A61B5/0456 ,  A61B5/117 ,  A61B5/7235 ,  A61B5/7278

摘要： A heartbeat detection device includes a difference value calculation unit (3) for calculating, from a sampling data sequence of an electrocardiographic waveform of a living body, one of an amount of change and a degree of change of sampling data for each sampling time, a multiplication unit (4) for calculating, for each sampling time, a product by multiplying one of an amount of change and a degree of change of the sampling data at a time K by one of the sampling data at the time K and sampling data at a time before the time K by a predetermined time t, a peak detection unit (5) for detecting a peak of the product, and a heartbeat time determination unit (6) for setting time of the peak of the product as a heartbeat time.

公开(公告)号：US20190038164A1

公开(公告)日：2019-02-07

申请号：US16075116

申请日：2017-01-25

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Nobuaki MATSUURA ,  Takayuki OGASAWARA ,  Kei KUWABARA

IPC分类号： A61B5/0456 ,  A61B5/00

摘要： There is provided a biological signal processing apparatus. The biological signal processing apparatus includes a biological signal extraction unit (2) configured to extract a biological signal from an electrocardiographic waveform measured by an electrocardiograph (1), an averaging processing unit (3) configured to calculate averaged data using time-series data of the biological signals extracted by the biological signal extraction unit (2), an abnormal value determination unit (4) configured to determine, for each data, whether the data of the biological signal extracted by the biological signal extraction unit (2) is appropriate, based on the averaged data calculated using the data of the biological signals that have occurred before the data, and an abnormal value processing unit (5) configured to perform one of deletion and interpolation of the data of the biological signal determined to be inappropriate by the abnormal value determination unit (4).

公开(公告)号：US20170258351A1

公开(公告)日：2017-09-14

申请号：US15509726

申请日：2015-08-28

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Nobuaki MATSUURA ,  Kei KUWABARA ,  Kazuhiko TAKAGAHARA ,  Ryusuke KAWANO ,  Hiroshi KOIZUMI

IPC分类号： A61B5/0456 ,  A61B5/04 ,  A61B5/0245

摘要： A heartbeat detection device includes a peak search unit (4) for searching for one of a peak at which a value M obtained from a sampling data sequence of an electrocardiographic waveform of a living body changes from an increase to a decrease and a peak at which the value M changes from a decrease to an increase, and a heartbeat time determination unit (5) for checking the value M in a predetermined time domain before a time of the peak and the value M in a predetermined time domain after the time of the peak, and setting the time of the peak as a heartbeat time if differences between the value M at the time of the peak and the values M in the predetermined time domains are not smaller than a predetermined amount.

公开(公告)号：US20190069791A1

公开(公告)日：2019-03-07

申请号：US16080645

申请日：2017-02-13

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Nobuaki MATSUURA ,  Kei KUWABARA ,  Takayuki OGASAWARA

IPC分类号： A61B5/04 ,  A61B5/024 ,  A61B5/0408 ,  A61B5/0456

摘要： There is provided a heartbeat detection device. The heartbeat detection device includes a time difference value calculation unit (3) configured to calculate a time difference value of sampling data of an electrocardiographic waveform, FIFO buffers (4-1, 4-2) configured to receive the time difference value, a FIFO buffer (4-3) configured to receive an output from the FIFO buffer (4-2), a FIFO buffer (4-4) configured to receive an output from the FIFO buffer (4-3), a minimum value detection unit (5) configured to detect, for each sampling time, a minimum value M out of the time difference value stored in the FIFO buffer (4-2) and the time difference value stored in the FIFO buffer (4-4), and a heartbeat time determination unit (6) configured to set, when a difference value M−a between the minimum value M and an output value a of the FIFO buffer (4-1) is equal to or greater than a threshold, sampling time of the output value a as heartbeat time.

公开(公告)号：US20180333064A1

公开(公告)日：2018-11-22

申请号：US15774964

申请日：2016-11-04

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Takayuki OGASAWARA ,  Takuro TAJIMA ,  Kei KUWABARA ,  Nobuaki MATSUURA ,  Ryoichi KASAHARA

IPC分类号： A61B5/04 ,  A61B5/0456 ,  A61B5/113 ,  A61B5/00 ,  A61B5/08

CPC分类号： A61B5/04014 ,  A61B5/0456 ,  A61B5/08 ,  A61B5/0816 ,  A61B5/113 ,  A61B5/6804 ,  A61B5/7257 ,  A61B5/7278

摘要： There is provided a respiration estimation apparatus. The respiration estimation apparatus includes an R-wave amplitude detection unit (5) configured to detect an amplitude of an R wave from a cardiac potential waveform of a subject, an R-R interval detection unit (6) configured to detect an R-R interval as an interval between an R wave and an immediately preceding R wave from the cardiac potential waveform, an acceleration displacement detection unit (7) configured to detect an angular displacement of an acceleration vector from a triaxial acceleration signal by a respiratory motion of the subject, a Fourier transform unit (10) configured to Fourier-transform each of time-series signals of the R-wave amplitude, the R-R interval, and the angular displacement to obtain a frequency spectrum of each of the signals of the R-wave amplitude, the R-R interval, and the angular displacement, and a signal selection unit (11) configured to extract a frequency as a candidate of a respiration frequency of the subject from each of the frequency spectrum of the R-wave amplitude, the frequency spectrum of the R-R interval, and the frequency spectrum of the angular displacement, and select best data from the frequencies as the respiration frequency of the subject.

公开(公告)号：US20170224244A1

公开(公告)日：2017-08-10

申请号：US15502995

申请日：2015-08-04

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Kei KUWABARA ,  Takayuki OGASAWARA ,  Nobuaki MATSUURA ,  Michiko SEYAMA ,  Hiroshi KOIZUMI ,  Ryusuke KAWANO ,  Kazuhiko TAKAGAHARA ,  Kazuyoshi ONO ,  Takako ISHIHARA ,  Yasuhiro SATO ,  Shingo TSUKADA ,  Nahoko KASAI ,  Koji SUMITOMO

IPC分类号： A61B5/0456 ,  A61B5/04 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/0408

CPC分类号： A61B5/0456 ,  A61B5/0006 ,  A61B5/0022 ,  A61B5/02055 ,  A61B5/04012 ,  A61B5/0404 ,  A61B5/04085 ,  A61B5/0428 ,  A61B5/0452 ,  A61B5/6804 ,  A61B5/6831 ,  A61B2560/0209 ,  A61B2560/0214 ,  A61B2560/0242

摘要： In a biological signal measurement system of this invention, biological digital data is generated from a biological signal measured by a biological signal measurement apparatus, and first feature amount data extracted from the biological digital data and downsized biological digital data are transmitted to a portable terminal. In a biological information measurement apparatus of this invention, biological feature amount data is extracted from measured biological waveform data, and at least one of the biological waveform data and the biological feature amount data is transmitted to an external device. It is possible to provide a biological signal measurement system capable of continuously measuring a biological signal for a long time without disturbing daily life and provide a biological information measurement apparatus capable of implementing downsizing and long life of a battery.