摘要:
A biometric authentication system includes: an image acquisition unit for acquiring an image of a living body; a light source with a predetermined wavelength band; an authentication information storage unit for, if light is emitted by the light source, setting a predetermined distance for a first distance to a first image acquired by the image acquisition unit in a depth direction so that quality of the first image is improved, extracting a first feature to be used to perform biometric authentication from the first image whose quality has been improved, and storing authentication information regarding the first feature; a feature extraction unit for, if light is emitted by the light source when performing authentication, setting the predetermined distance for a second distance to a second image acquired by the image acquisition unit in the depth direction so that quality of the second image is improved, and extracting a second feature for biometric authentication from the second image whose quality has been improved; and a comparison unit for comparing the authentication information regarding the first feature and authentication information regarding the second feature.
摘要:
A concentration measurement method by an absorptiometric method which measures a concentration of a first solute component dissolved in a solution, in which the first solute component interacts with a solvent, includes: referring to an absorption coefficient (μaw(λ)) of the solvent; measuring an absorption coefficient (μa(λ)) of a first sample material, after an interaction between the solvent and the first solute component has occurred; and obtaining an unknown volume fraction (vg) of the first solute component and a volume fraction (vw) of the solvent, based on the absorption coefficient (μaw(λ)) of the solvent, a apparent absorption coefficient (μ′ag(λ)) of the first solute component, and the absorption coefficient (μa(λ)) of the first sample material.
摘要:
A first temperature sensor is formed in a first measurement area so that a measurement surface thereof is exposed to an inner surface of a liquid tank (a storage body). The first temperature sensor can detect a temperature of liquid injected into the liquid tank. Further, a first input part is formed in the first measurement area so that an output surface thereof is exposed to the inner surface of the liquid tank.
摘要:
A concentration determination apparatus may include: an irradiation unit that irradiates short-pulsed light to an observed object; a light receiving unit that receives light backscattered from the observed object; a light intensity acquisition unit that acquires an intensity distribution of the light; an optical path length distribution storage unit that stores a model of an optical path length distribution in each layer of the plurality of layers of the short-pulsed light; an optical path length acquisition unit that acquires the optical path length distribution of each layer; a time-resolved waveform storage unit that stores a model of a time-resolved waveform; a light intensity model acquisition unit that acquires a light intensity model; an integral interval calculation unit that calculates a time range of an area; an optical absorption coefficient calculation and acquisition unit that calculates and acquires an optical absorption coefficient; and a concentration calculation unit that calculates the concentration.
摘要:
An apparatus for quantifying concentration includes a temporal path-length distribution (TPD) storage unit configured to store a TPD model of a short-time-pulse of light, a time-resolved waveform storage unit configured to store a time-resolved waveform model of the short-time-pulse of light, a light irradiating unit configured to irradiate the short-time-pulse of light, a light receiving unit configured to receive a backscattered light, a measured light intensity acquisition unit configured to acquire a light intensity of the backscattered light, a TPD acquisition unit configured to acquire a TPD, a model light intensity acquisition unit configured to acquire the light intensity of the short-time-pulse of light, a light absorption coefficient calculating unit configured to calculate a light absorption coefficient, and a concentration calculating unit configured to calculate the concentration of a target component.
摘要:
A pulse waveform of a living body is detected and is analyzed using peak point data or timing data to perform a diagnosis of a condition of the body.
摘要:
A personal verification device includes a fingerprint sensor which detects a fingerprint of an operator, and a pulse wave sensor which detects a pulse wave of the operator. An index extraction section processes the pulse wave detected by the pulse wave sensor and extracts at least one index. First reference information which is compared with a fingerprint is stored in a first reference information storage section. Second reference information which is compared with the at least one index is stored in a second reference information storage section. A verification section outputs a signal indicating that the operator is true when it is determined that the operator is a registered person based on the result of comparison between the fingerprint and the first reference information, and it is determined that the operator is alive based on the result of comparison between the at least one index and the second reference information.
摘要:
An ink cartridge that is filled with ink and, used with the ink cartridge loaded into a printer includes a reservoir that reserves the ink, an outlet through which the ink is supplied to the printer with the ink cartridge loaded, at least one ink supply system that includes a channel that leads the ink from the reservoir to the outlet, and a sensor that detects whether the channel is filled with the ink or gas, an ink cartridge terminal that is electrically coupled to the sensor and makes contact with a printer terminal disposed on the printer upon loading of the ink cartridge. A detection region of the channel where detection is carried out by the sensor is previously filled with gas with the ink cartridge yet to be used. Whether or not the use of the ink cartridge is proper is determined based on information from the sensor.
摘要:
A biometric data acquisition device for acquiring data of a living body by irradiating the living body with light includes: a light source unit that emits light to the living body; a plurality of light receiving elements that receive transmitted light or reflected light, which is transmitted through the living body or reflects from the living body, respectively, by irradiating the living body with the light from the light source unit; an openable and closable gate provided for each of the plurality of light receiving elements; and an opening and closing control unit that controls opening and closing of the gate so as to make uniform intensities of light received by the plurality of light receiving elements.
摘要:
The present invention constructs a flexible power supply backup system corresponding to electronic devices (apparatuses) at low cost, and realizes reliable operation of the apparatuses. There is provided a power controller 1 that controls power of an apparatus 100 provided with a backup power supply for power supply, which includes a power failure state determination unit 21 that determines the power failure state of the power supply, a power supply installation state determination unit 22 that determines the installation state of the backup power supplies 3, 7, etc. installed in the apparatus 100, and a power control unit 23 that, in case the power failure state is determined by the power failure state determination unit 21, controls power using the backup power supply based on determination result by the power failure state determination unit 21 and determination result by the power supply installation state determination unit 22.