Seiko Epson Corporation

Shuji Uchida

Shunichi Mizuochi

Kazumi Matsumoto

Akinobu Sato

Hideo Sasahara

Daisuke Sugiya

Kenji Onda

Anand Kumar

Takuya Sugimoto

Kumar Anand

Yimei Ding

Ken Watanabe

Rama Sanjay

A communication device is a communication device that transmits detection information including position information based on an LPWA communication system, and includes a position information acquisition unit that acquires the position information based on a positioning signal, a storage unit that stores the detection information, a first communication unit that performs LPWA-compliant wireless communication, a movement detection unit that detects movement of the communication device, and a control unit that controls a communication speed of the wireless communication by the first communication unit, in which the control unit determines whether the communication device is outdoors or indoors based on the positioning signal received by the position information acquisition unit, and when the communication device is determined to be outdoors and the movement detection unit detects movement of the communication device, the control unit changes the communication speed.

Communication method and communication device

A communication device is a communication device that transmits detection information including position information based on a communication system using LPWA, and includes a position information acquisition unit that acquires the position information, a storage unit that stores the detection information, a communication unit that performs wireless communication in compliance with the communication system, a movement detection unit that detects movement of the communication device, and a control unit that controls a communication speed of the wireless communication by the communication unit, in which, when the movement detection unit detects movement of the communication device, the control unit changes the communication speed.

A notification device includes a difference calculation section adapted to calculate differences between index values of a plurality of indexes, which are calculated by analyzing an exercise of a user using an inertial sensor, and are related to an athletic ability of the user, and target values set to the respective indexes, an index selection section adapted to select some of the indexes based on the differences with respect to the respective indexes, and an output section adapted to output the some of the indexes selected.

Notification device, exercise analysis system, notification method, notification program, exercise support method, and exercise support device

An on-running landing position evaluation method includes determining a deceleration period in an on-ground duration of a user who is running based on an acceleration value and calculating a travel distance in the determined deceleration period.

On-running landing position evaluation method, on-running landing position evaluation apparatus, detection method, detection apparatus, running motion evaluation method, and running motion evaluation apparatus

Disclosed are a correlation coefficient correction method, a correlation coefficient correction apparatus, and a program, capable of improving estimation accuracy of a walking velocity or a stride of a moving object, and an exercise analysis method capable of analyzing a user's exercise with high accuracy. In one aspect, the correlation coefficient correction method includes calculating a reference velocity by using a detection result in a first sensor, calculating characteristic information regarding walking of a moving object by using a detection result in a second sensor mounted on the moving object, and correcting a correlation coefficient in a correlation expression indicating a correlation between the characteristic information and a walking velocity or a stride of the moving object by using the reference velocity.

Correlation coefficient correction method, exercise analysis method, correlation coefficient correction apparatus, and program

An exercise analysis apparatus includes a feature point detection unit that detects a feature point in a user's running by using a detection result from an inertial sensor, and an exercise information generation unit that analyzes the user's running with a timing at which the feature point detection unit detects the feature point as a reference by using the detection result from the inertial sensor, so as to generate exercise information of the user.

Exercise analysis apparatus, exercise analysis method, exercise analysis program, and exercise analysis system

A traveling direction velocity calculation devicecalculates a posture of an acceleration sensorwith respect to a user, using a detection result represented in a local coordinate system associated with the acceleration sensor, detecting acceleration, which is worn on a user's body, when a change in the detection result of the acceleration sensorsatisfies a predetermined specific condition. The detection result of the acceleration sensorat a time different from that when the posture is calculated and at a time when the specific condition is satisfied is transformed, using the calculated posture, to a mobile body coordinate system associated with a user. A velocity in a traveling direction of the user is calculated using the transformed detection result.

Movement state information calculation method and movement state information calculation device

A bias estimating method includes: calculating a virtual posture angle which is a posture angle with a bias which is assumed to be zero by the use of detection values of a plurality of axes in a calibration posture where one axis of a multi-axis acceleration sensor is parallel to the vertical direction; and estimating a bias value contained in the detection value of the axis using the detection value of the axis and the virtual posture angle.

Bias estimating method, posture estimating method, bias estimating device, and posture estimating device

A parameter calculating method includes: setting lengths of prediction target terms as divisions of a predetermined effective period of a satellite orbit as variable lengths; and calculating a parameter of a predetermined orbit model expression used for approximating the satellite orbit based on prediction position data containing prediction positions of a positioning satellite in time series for each of the prediction target terms.

Parameter calculating method, long-term prediction orbit data providing method, information providing device, and positioning system

A method of estimating a stride length includes: detecting acceleration of a user's vertical movement; and estimating a stride length using the detected acceleration by changing the degree of correlation between the acceleration and the stride length, in which the stride length is increased as the detected acceleration increases, based on user's speed.

Method of estimating stride length, method of calculating movement trajectory, and stride length estimating device

A position calculation method and apparatus are described. The position calculation apparatus may include an inertial measurement unit and be configured to be coupled with at least one sensor unit for detecting a physical event for use in position calculation. The presence of and type sensor unit may identified, and the position processing to be undertaken may depend on this identification.

Position calculation method and position calculation apparatus

A position calculating method includes: determining a positioning satellite used for position calculation on the basis of at least reliability of satellite orbits in a prediction target period corresponding to a position calculation point, the reliability of satellite orbits being set in long-term predicted orbit data in which satellite orbits of positioning satellites and reliability of the satellite orbits are associated for each prediction target period; and calculating a position on the basis of a positioning signal received from the determined positioning satellite.

Position calculating method and position calculating device

A positioning device comprising: a peak frequency determination section which determines a peak frequency which is a reception frequency corresponding to a maximum correlation value of a specific positioning base code replica and a positioning base code carried on a radio wave from a specific transmission source; a reference frequency calculation section which calculates a low frequency which is a frequency lower than the peak frequency and a high frequency which is a frequency higher than the peak frequency; a reference correlation value calculation section which calculates the correlation value corresponding to the low frequency and the correlation value corresponding to the high frequency; a corrected peak frequency calculation section which calculates a corrected peak frequency based on the correlation value corresponding to the peak frequency, the peak frequency, the correlation value corresponding to the low frequency, the low frequency, the correlation value corresponding to the high frequency, and the high frequency; and a radio wave reception section which receives the radio wave using the corrected peak frequency.

Positioning device, positioning control method, positioning control program, and computer-readable recording medium having positioning control program recorded thereon

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Shiojiri, Japan

Shuji Uchida