公开(公告)号：US20210090460A1

公开(公告)日：2021-03-25

申请号：US16935778

申请日：2020-07-22

Applicant: Hiroshima University ,  Hitachi, Ltd.

Inventor： Tsukasa FUNANE ,  Hirokazu ATSUMORI ,  Akihiko KANDORI ,  Akiko OBATA ,  Ayako NISHIMURA ,  Yuto KOMATSU ,  Takashi NUMATA ,  Seiji HAMA ,  Toshio TSUJI

IPC: G09B19/00 ,  A61B5/16 ,  A61B5/11 ,  A61B5/00

Abstract: An information processing system visualizes brain states to optimize rehabilitation programs for rapid feedback of their effects to a patient and healthcare staff, to thereby promote the efficiency of rehabilitation. An embodiment of the system includes: a storage section that stores test-result brain-state relationship information associating results of activities of multiple examinees subjected to predetermined tests with brain states of the examinees; an input section that accepts a first test result as the result of the activity of a first examinee subjected to the predetermined tests; a control section that estimates the brain state from the first test result on the basis of the test-result brain-state relationship information; and an output section that outputs the estimated brain state.

公开(公告)号：US20200152225A1

公开(公告)日：2020-05-14

申请号：US16596809

申请日：2019-10-09

Applicant: Hitachi, Ltd.

Inventor： Takashi NUMATA ,  Yasuhiro ASA ,  Nobuhiro FUKUDA

IPC: G10L25/63 ,  B25J11/00 ,  G10L15/22

Abstract: An interaction system that provides an interaction interface comprising: a computer and a device that obtains information, wherein the computer stores information for managing data in which a type of a second feature value is associated with a listening pattern that defines a tendency of a response action performed by the interaction interface on a user; calculates a first feature value that is an index for evaluating a change in state during speech by the user on the basis of information obtained by the device; calculates second feature values on the basis of the first feature value; selects a target second feature value from among the second feature values; selects the listening pattern corresponding to the target second feature value; and generates output information for controlling the interaction interface on the basis of the selected listening pattern.

公开(公告)号：US20240386343A1

公开(公告)日：2024-11-21

申请号：US18436099

申请日：2024-02-08

Applicant: Hitachi, Ltd.

Inventor： Toshiteru NAKAMURA ,  Takashi NUMATA ,  Yuya OGI

IPC: G06Q10/0631 ,  G06Q10/1053 ,  G06T7/70

Abstract: A system provides, to a subject apparatus including one or a plurality of sensors, inducement information for inducing a subject to take an action for a purpose different from psychological characteristics estimation. The system receives measurement data relating to the action taken by being induced by the inducement information, the measurement data being based on measurement by the one or the plurality of sensors. The action induced by the inducement information includes designation of subject intention and a related action that is all or a part of actions excluding the designation of the subject intention. The system calculates one or a plurality of action feature values based on the related action data in the measurement data and estimates psychological characteristics of the subject based on the action feature values.

公开(公告)号：US20220343785A1

公开(公告)日：2022-10-27

申请号：US17762860

申请日：2020-04-28

Applicant: Hitachi, Ltd. ,  Kyoto University

Inventor： Takashi NUMATA ,  Ryuji MINE

IPC: G09B5/06 ,  G09B5/08 ,  G06V40/16

Abstract: Provided is a learning support system which can enhance a learning effect by sharing a matter of interest among learners viewing a learning content. The learning support system includes: a learning content display unit configured to play and display a teaching material video; a learner information reporting unit configured to acquire biological information of a learner during play of the teaching material video and report the biological information as learner information; a region-of-attention identification unit configured to identify a region-of-attention of the learner based on the biological information; a learner information display creation unit configured to generate a screen in which the region-of-attention is superimposed on the teaching material video of another learner belonging to the same cluster as the learner; and a learner information transmission unit configured to transmit the screen to the another learner.

公开(公告)号：US20190125197A1

公开(公告)日：2019-05-02

申请号：US15941471

申请日：2018-03-30

Applicant: Hitachi, Ltd.

Inventor： Nobuhiro FUKUDA ,  Masashi KIGUCHI ,  Akiko NAKAJIMA ,  Takashi NUMATA ,  Hironori WAKANA ,  Masuyoshi YAMADA

IPC: A61B5/021 ,  G06T7/90 ,  G06T7/00 ,  G06T5/00 ,  A61B5/024 ,  A61B5/00

Abstract: A biological information detection apparatus includes: a camera; a frame image analysis unit that detects a region including pixels having a predetermined skin color, as a skin color region, from a frame image taken using the camera, and detects a signal corresponding to a light wavelength from an image signal of each pixel included in the skin color region, as skin color wavelength data; a skin color wavelength difference detection unit that calculates an average value of differences of the skin color wavelength data from predetermined reference wavelength data for the pixels included in the skin color region, and acquires the average value as average wavelength difference data; a pulse wave signal detection unit that detects a signal obtained by smoothing the average wavelength difference data detected in time series, as a pulse wave signal.

公开(公告)号：US20240260871A1

公开(公告)日：2024-08-08

申请号：US18378475

申请日：2023-10-10

Applicant: Hitachi, Ltd.

Inventor： Takashi NUMATA ,  Toshiteru NAKAMURA

IPC: A61B5/16 ,  A61B5/00 ,  A61B5/11 ,  G16H10/20 ,  G16H50/30

CPC classification number: A61B5/167 ,  A61B5/1124 ,  A61B5/742 ,  G16H10/20 ,  G16H50/30

Abstract: A psychological trait estimation system provides a user with information that prompts an action for a purpose different from psychological trait estimation, receives, from an apparatus including one or a plurality of sensors, measurement data regarding an action prompted by the provided information and taken by the user, and specifies data representing designation of a user intention and data representing a relevant action based on the measurement data. The action prompted by information includes designation of a user intention and relevant actions that are all or some actions except the designation of the user intention. The system estimates a psychological trait of the user based on data representing a relevant action for one or each of a plurality of relevant actions, and outputs data representing the psychological trait having been estimated.

公开(公告)号：US20230333661A1

公开(公告)日：2023-10-19

申请号：US18116598

申请日：2023-03-02

Applicant: Hitachi, Ltd.

Inventor： Takashi NUMATA ,  Kazuyuki TAJIMA ,  Keiichi MITANI ,  Toshiteru NAKAMURA

IPC: G06F3/01 ,  G06F3/04815 ,  G06T19/20

CPC classification number: G06F3/017 ,  G06F3/04815 ,  G06T19/20 ,  G06T2219/2016 ,  G06T2200/24

Abstract: An arithmetic apparatus displays a 3D work-target object in a 3D coordinate space on a display device, and receives a motion signal that is a signal representing a motion measured by any one of sensor units. When receiving the motion signal, the arithmetic apparatus identifies the measured motion based on the motion signal. When the identified motion is a motion regarding a spatial shift that is a shift of a viewpoint in the 3D coordinate space of a user, the arithmetic apparatus shifts the viewpoint in the 3D coordinate space of the user in accordance with the identified motion. When the identified motion is a hand motion regarding a work movement with respect to a work target, the arithmetic apparatus outputs output information including information representing the work movement in accordance with the identified motion.

公开(公告)号：US20210030285A1

公开(公告)日：2021-02-04

申请号：US16942862

申请日：2020-07-30

Applicant: HITACHI, LTD.

Inventor： Nobuhiro FUKUDA ,  Hironori WAKANA ,  Takashi NUMATA

IPC: A61B5/021 ,  A61B5/026 ,  A61B5/0285 ,  A61B5/103 ,  G06T5/00

Abstract: A biological information detection device is robust to color change of external light or illumination light. The biological information detection device includes: an image acquiring section that acquires image information by taking an image of the face of a living body; a blood flow analyzing section that corrects the image information according to the Retinex theory for color constancy, outputs hue information in the corrected image information as blood flow information, and outputs skin area mark information indicating the position of a given skin area in the face; and a local pulse wave detecting section that obtains, from the blood flow information of the skin area corresponding to the skin area mark information, pulse information of the skin area.

公开(公告)号：US20210125630A1

公开(公告)日：2021-04-29

申请号：US17030515

申请日：2020-09-24

Applicant: HITACHI, LTD.

Inventor： Takashi NUMATA ,  Ryuji MINE ,  Yasuhiro ASA

IPC: G10L25/78 ,  G06F3/16

Abstract: An interaction system that interacts with a user is disclosed. The interaction system includes: an input device that receives a speech signal of the user; a computing device that determines a speech content of the interaction system for a speech content acquired from the speech signal of the user such that a frequency distribution of speech feature values of the speech content of the interaction system approaches an ideal frequency distribution; and an output device that outputs the determined speech content of the interaction system.

公开(公告)号：US20210085196A1

公开(公告)日：2021-03-25

申请号：US17004371

申请日：2020-08-27

Applicant: HITACHI, LTD.

Inventor： Nobuhiro FUKUDA ,  Yuichi NONAKA ,  Yuto KOMATSU ,  Charles LIMASANCHES ,  Takashi NUMATA ,  Hironori WAKANA ,  Masashi KIGUCHI

IPC: A61B5/021 ,  A61B5/1171 ,  A61B5/00 ,  A61B5/103

Abstract: Provided is a biological information detection device including: an image acquisition unit that acquires an image composed of image signals including a plurality of wavelength components obtained by capturing reflected light from an object; a region division unit that divides the image into a plurality of regions for each frame; a local pulse wave detection unit that detects a pulse wave based on wavelength fluctuation between frames for each of the regions; and a blood pressure estimation unit that calculates propagation velocity of the pulse wave based on an appearance time difference of patterns of the pulse waves in two or more regions extracted based on an appearance order of the patterns of the pulse waves in the plurality of regions, and estimates a blood pressure based on the propagation velocity of the pulse wave.