Nec Corporation

Shinichi Fukuzumi

Akihisa Kenmochi

Toshimasa Yamazaki

In an organism identifying device, a stimulus giving section gives a thermal stimulus to a finger, an organism information measuring section measures an organism information produced by said finger in response to the stimulus, and a determining section determines whether or not the organism information includes contents that the organism reflectively responds to the organism information.

Organism identifying method and device

When a finger,is put on a fingerprint input sensor,it is held in contact with living body potential deriving electrodes,and,. In addition, a finger portion near the first joint is held in contact with a living body grounding electrode,to ground the living body. With the finger,pushed against the fingerprint input sensor,for inputting the fingerprint, finger muscle potentials signals,to,are obtained from these electrodes. A living body data measuring unit,takes differences of these finger muscle potentials for one another, and outputs the result as living body data potential data,A living body data analyzing unit,analyzes the potential data and frequency data of the living body potential difference data,and outputs analysis data,A living body discriminating unit,makes a determination, from the analysis data,as to whether the finger,is a finger of living body or a replica finger.

Living body discriminating apparatus

An organism identification system that can identify whether or not a fingerprint image input object is a living body at a fingerprint collating time. A finger collator slides his finger at the time of inputting a fingerprint image. Meanwhile the finger is contact with bioelectric potential lead-out portions and a bioelectric potential grounding portion. Sliding of the finger causes a variation in the muscle potential of the finger. The bioelectric potential lead-out portions and the bioelectric potential grounding portion output electric signals corresponding to the potential variation to a bioelectric signal amplification section. The bioelectric signal amplification section amplifies the difference between electric signals from the bioelectric potential lead-out portions while the bioelectric potential grounding portion is at the ground potential. A signal peculiar to a living body is generated by sliding the finger. When an illegal person slides a replica, a variationless signal occurs. The bioelectric signal identification section identifies a living body based on differences in the signals.

System and method for identifying an organism

An evoked potential measuring apparatus by which an evoked potential which reflects a variation in internal condition of a human being such as a feeling of strain, a feeling of irritation or a feeling of stress can be measured in a high quality with a high degree of reliability. The apparatus comprises a sensory stimulus application section, an evoked potential measurement section for measuring and amplifying an evoked brain potential, an evoked potential recording control section for controlling recording of a brain potential signal, an evoked potential recording section for recording the brain potential signal, an internal condition estimating physiological measure measurement section for measuring a physiological measure, a physiological measure signal recording control section for controlling recording of a physiological measure signal, a physiological measure signal recording section for recording the physiological measure signal, an internal condition estimation section for estimating the internal condition of the subject using the physiological measure signal, an evoked potential adding and averaging section for adding and averaging the brain potential signal in accordance with the internal condition of the subject to obtain an evoked potential, an evoked potential adoption determination section for estimating a quality of the evoked potential to determine whether or not the evoked potential may be adopted, and an evoked potential measurement procedure control section.

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Tokyo, Japan

Shinichi Fukuzumi