Kabushiki Kaisha Toshiba

Tdk Corporation

Kabuhsiki Kaisha Toshiba

Takuji Suzuki

Satoshi Aida

Kazushige Ouchi

Katsuhiko Fujimoto

Mariko Shibata

Yoshiharu Ishibashi

Kenichi Kameyama

Kazuya Okamoto

Kanako Nakayama

Miwako Doi

Sawa Fuke

Shiroh Saitoh

Yasunobu Yamauchi

Mamoru Izumi

Akihisa Moriya

Junya Takakura

Yasutoshi Ishihara

Kozo Sato

Kazuhiro Inoue

Atsushi Sugahara

Kenta Cho

Takafumi Ohishi

Masafumi Kondo

Ayao Itoh

According to an embodiment, a gait analysis device includes a measuring unit configured to measure a subject's motion; a determining unit configured to determine a walking start point in time at which the subject starts walking based on the subject's motion; a feature quantity calculator configured to, when the walking start point in time is determined, calculate a feature quantity of the subject's motion measured during a predetermined time period starting from the walking start point in time as a time period in which the subject's motion is not stabilized; and an estimating unit configured to estimate a subject's walking condition based on the feature quantity.

Gait analysis device and computer program product

According to one embodiment, an information processing apparatus includes an acquisition module, a feature calculator and a blood pressure value calculator. The acquisition module is configured to acquire a basic first attribute of a user, a second attribute related to a physique of the user, a third attribute related to a circulatory organ of the user, and a biological signal related to a living body of the user. The feature calculator is configured to calculate a feature in the biological signal. The blood pressure value calculator is configured to calculate a blood pressure value of the user, based on the first attribute, the second attribute, the third attribute, and the feature.

Information processing apparatus, method and storage medium

A biosignal measuring device has a first information acquisition module, a second information acquisition module, a first calculation module, a second calculation module, a third calculation module, a heartbeat interval estimation module, a determination module, and an output module. The first information acquisition module acquires the pulse wave signal. The second information acquisition module acquires an electrocardiogram signal. The first calculation module calculates a pulse wave velocity based. The second calculation module determines a heartbeat interval. The third calculation module calculates a relationship between pulse wave velocity and the heartbeat interval. The heartbeat interval estimation module estimates an estimated heartbeat interval based on pulse wave velocity and calculated relationship. The determination module determines whether the position of the first and second information acquisition modules has changed based on the heartbeat interval and the estimated heartbeat interval. The output module outputs information.

Biosignal measuring device, biosignal measuring method and biosignal program

According to an embodiment, a communication apparatus includes a substrate, a first communication unit, a first signal line, a first terminal, a second signal line, a variable capacitance portion, and an inductor portion. The substrate is provided with a reference potential electrode. The first communication unit transmits and receives. One end of the first signal line is connected to the first communication unit. The first terminal is connected to the other end of the first signal line. The second signal line is connected to the first signal line through the first terminal. One end of the variable capacitance portion is connected to the other end of the second signal line. One end of the inductor portion is connected to the other end of the variable capacitance portion. The communication apparatus executes communication through a living body.

Communication apparatus

A device according to an embodiment includes: a simulated skin portion being located near a photoelectric pulse wave sensor to simulate a blood flow of the skin; a reflectance changing unit located on an opposite side of the simulated skin portion to the photoelectric pulse wave sensor, the reflectance changing unit changing, in time series, reflectance of light emitted from the light-emitting unit of the photoelectric pulse wave sensor and passing through the simulated skin portion; a reflectance change control unit that transmits a reflectance control signal to the reflectance changing unit to control changes in reflectance of the reflectance changing unit; and a synchronization signal output unit that outputs a signal in sync with the reflectance control signal to an external device.

Device for inspecting a photoelectric pulse wave sensor and method for inspecting a photoelectric pulse wave sensor

Conductive seal of a biomedical signal recorder with a radio function

Base plate of a biomedical signal recorder with a radio function

Biomedical signal recorder with a radio function

Conductive pad set of a biomedical signal recorder with a radio function

According to the invention, a pulse wave measuring device includes: a connector that is disposed on a main unit; an external sensor that includes an external light-emitting module radiating light to a human body to be measured and an external light-receiving module receiving at least one of reflected light and transmitted light originating from the external light-emitting module and the human body so as to measure a pulse wave; an first controller that switches the external light-emitting module ON and OFF; an second controller that switches the external light-receiving module ON and OFF; and an external sensor connection determination section that determines a connection between the external sensor and the connector in accordance with a transient response of the external light-receiving module, wherein, after the external sensor connection determination section determines that the external sensor is connected to the connector, a measurement of the pulse wave by using the external sensor is started.

Pulse wave measuring device

Pulse waves of a subject are detected in time sequence. Amplitude of the pulse waves is detected, and an interval between two pulse waves adjacent along a time axis is detected. A first change ratio of the interval along the time axis, and a second change ratio of the amplitude divided by the interval along the time axis are calculated respectively. By comparing the first change ratio and the second change ratio with a first threshold and a second threshold respectively, it is decided whether the pulse waves of the subject are irregular.

Apparatus and method for measuring pulse waves

A pulse wave period measuring apparatus according to an embodiment of the present invention detects a pulse wave of a subject, detects a maximum value and a minimum value in a predetermined period of the pulse wave, calculates one or more reference values between the maximum value and the minimum value in the predetermined period, based on one or more internally dividing ratios common to plural predetermined periods of the pulse wave, calculates two or more times in the predetermined period, the apparatus calculating the two or more times at which the pulse wave intersects with the one or more reference values, calculates a time period between each calculated time in the predetermined period and a corresponding calculated time in a last period before the predetermined period, as a pulse wave period of the pulse wave, calculates a variation of pulse wave periods, for two or more pulse wave periods calculated between the predetermined period and the last period before the predetermined period, and calculates, based on the variation of the pulse wave periods, the stability of measuring the pulse wave periods.

Pulse wave period measuring apparatus, pulse wave period measuring method, heartbeat period measuring method, and recording medium

A pulse wave measuring apparatus includes a pulse wave measuring unit measuring a pulse wave; a first detection unit detecting first maximum and minimum values; a second detection unit detecting second maximum and minimum values; an update unit updating the first maximum and minimum values with the second maximum and minimum values after time periods; an initialization unit initializing the second maximum and minimum values after updating the first maximum and minimum values; a timing detection unit detecting a time determined by the first maximum and minimum values; and an interval calculation unit calculating a pulse wave interval using the timing.

Pulse wave measuring apparatus and method for measuring a pulse wave

A thermal sensation determining apparatus includes a skin temperature detecting unit configured to detect a skin temperature of a peripheral site of a subject's body, a variation state determining unit configured to determine a variation state of the skin temperature during a first interval to obtain a variation state determination result, a gradient detecting unit configured to detect a gradient of the skin temperature during a second interval to determine the gradient to obtain a gradient detection result, and a thermal sensation determining unit configured to determine the subject's thermal sensation using the variation state determination result and the gradient detection result to obtain a thermal sensation determination result classified into levels ranging from 'hot' to 'cold' based on a &#x201c;moderate&#x201d; temperature.

Thermal sensation determining apparatus and method, and air-conditioning control apparatus using thermal sensation determination result

Pulse wave signal data expressing the pulse wave of a subject and body movement signal data expressing body movements of the subject are obtained so that a correlation coefficient expressing the degree of correlation between the pulse wave signal data and the body movement signal data is calculated. One or more pieces of the pulse wave signal data in which the correlation coefficient is equal to or larger than a predetermined threshold value are eliminated.

Growing community of inventors

Kanagawa, Japan

Takuji Suzuki