Patent ID: 11963772
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G  H  Y | IPC A  G

Claim 5:
6. A system comprising:
a light source;
a photodetector; and
electrical circuitry,
wherein the electrical circuitry:
causes the light source to emit at least one pulsed light with which a user is illuminated,
causes the photodetector to detect internal scattering components included in at least one reflection pulsed light that returns from the user, the internal scattering components being diffused in a brain of the user,
causes the photodetector to detect surface reflection components included in the at least one reflection pulsed light, the surface reflection components being reflected by a surface of the user,
determines a psychological state of the user, based on the internal scattering components and the surface reflection components,
causes the photodetector to detect first part of the at least one reflection pulsed light to detect the surface reflection components, and
causes the photodetector to detect second part of the at least one reflection pulsed light to detect the internal scattering components,

the first part includes part before a falling period is started, the falling period being a period from start to end of a decrease of an intensity of the at least one reflection pulsed light, and
the second part includes at least part in the falling period.