公开(公告)号：US20230111721A1

公开(公告)日：2023-04-13

申请号：US18064621

申请日：2022-12-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masato SUZUKI ,  Takamasa ANDO

IPC: G06V40/16 ,  A61B5/00 ,  G06F18/24

Abstract: A system includes: a light source that emits pulsed light that illuminates a user's head portion; a photodetector that detects at least part of pulsed light returning from the head portion and that outputs one or more signals corresponding to an intensity of the at least part; electrical circuitry; and a memory that stores an emotion model indicating a relationship between the one or more signals and emotions. Based on a change in the one or more signals, the electrical circuitry selects an emotion by referring to the model. The one or more signals include a first signal corresponding to an intensity of first part of the reflection pulsed light and a second signal corresponding to an intensity of second part of the reflection pulsed light. The first part incudes part before a falling period is started; and the second part includes at least part in the falling period.