Sony Corporation

Kiyoaki Takiguchi

Takaaki Nakamura

Kazuhiko Aida

Akira Shinada

Koichi Maeyama

Masashi Ohkubo

The apparatus enables biometric authentication without the risk of forgery or the like and enables living-tissue discrimination. The roughness distribution pattern of deep-layer tissue of the skin covered with epidermal tissue is detected, thereby extracting a unique pattern of the living tissue. Biometric authentication is performed based upon the detected pattern. The roughness distribution pattern of the deep-layer tissue of the skin is optically detected using difference in optical properties between the epidermal tissue and the deep-layer tissue of the skin. Long-wavelength light, e.g., near-infrared light, is used as illumination light cast onto the skin tissue. A fork structure of a subcutaneous blood vessel is used as the portion which is to be detected, for example. The portion which is to be detected is determined based upon the structure of the fork structure. The living-tissue discrimination may be made using the subcutaneous blood vessel.

Compact biometric authentication device and associated methodology of imaging and detecting living-tissue patterns

The present invention provides a detection apparatus, including: signal outputting means configured to output signals of a frequency band within which the difference in electric characteristic between different tissues of a living organism is higher than a predetermined level individually to two or more electrodes; impedance detection means configured to detect, from each of the electrodes, an impedance of the living organism disposed in quasi-electrostatic fields generated individually from the electrodes in response to the outputs; and colloid detection means configured to detect presence or absence of colloid in the inside of the living organism in response to the differences between the detected impedances.

Detection apparatus and detection method

The present invention provides an electric field control device that can transmit a quasi-electrostatic field more efficiently. There is provided an electric field control device that applies electric fields to an electric field application subject, which includes a first electrode and a second electrode that generate the electric fields, a frame that is arranged around the first electrode and second electrode, and is connected to the first electrode and second electrode, an opening that is formed at one end of the frame, and an output unit that outputs a first signal to the first electrode, and outputs a second signal to the second electrode, wherein, when the electric fields are generated from the first electrode and second electrode, the output unit outputs the second signal to the second electrode so that the potential of the frame is not changed temporally and made constant.

Electric field control device and detection device

A distance detection system is disclosed. The distance detection system includes an electric-field forming apparatus and an electric-field receiving apparatus. Quasi-electrostatic-field forming means is included in the electric-field forming apparatus. The quasi-electrostatic-field forming means is for forming quasi-electrostatic fields for a plurality of frequencies. The intensity of the quasi-electrostatic field for each frequency falls below a predetermined threshold intensity at a different distance from the quasi-electrostatic-field forming means. Distance detection means is included in either one of the electric-field forming apparatus and the electric-field receiving apparatus. The distance detection means is for detecting a distance between the electric-field forming apparatus and the electric-field receiving apparatus, based on the frequency of a quasi-electrostatic field received by the electric-field receiving apparatus.

Distance detection system

The present invention enables permanent biometric authentication without the risk of forgery or the like. The present invention enables living-tissue discrimination as well as biometric authentication. The roughness distribution pattern of deep-layer tissue of the skin covered with epidermal tissue is detected, thereby extracting a unique pattern of the living tissue. Then, biometric authentication is performed based upon the detected pattern. The roughness distribution pattern of the deep-layer tissue of the skin is optically detected using difference in optical properties between the epidermal tissue and the deep-layer tissue of the skin. In this case, long-wavelength light, e.g., near-infrared light is used as illumination light cast onto the skin tissue. A fork structure of a subcutaneous blood vessel is used as the portion which is to be detected, for example. The portion which is to be detected is determined based upon the structure of the fork structure. In this case, the living-tissue discrimination may be made using the subcutaneous blood vessel.

A marker detection apparatus detects a marker attached to a target sample from samples flowing in a sample flow, including: an electric field formation section that forms a quasi-electrostatic field in a path of the sample flow; and a detection section that detects, when the target sample labeled by the marker that is a particle made from a piezoelectric or electrostrictive substance of a unique vibration frequency gets into the quasi-electrostatic field, the vibration of the particle.

Marker detection apparatus and marker detection method

A marker detection apparatus detects a marker attached to a target sample from samples flowing in a sample flow, wherein the sample flow carries a low ionization-tendency metal fine particle selected from a group of Au to Ag and the target sample labeled by the marker that is a particle of a unique vibration frequency, the marker detection apparatus including: an electromagnetic wave applying section that applies an electromagnetic wave to a path of the sample flow under a condition that the radius of the metal fine particle is smaller than the wavelength of the electromagnetic wave; and a detection section that detects vibration of the particle attached to the target sample, the vibration arising from a quasi-electrostatic field generated on the surface of the metal fine particle when the electromagnetic wave is applied to the metal fine particle around the target sample in the sample flow.

Herein disclosed is a communication device which includes: a piezoelectric element having a structure formed by laminating piezoelectric substances and electrodes; obtaining means for obtaining acoustic data superimposed on a quasi-electrostatic field formed on a living body from the electrode of the piezoelectric element; and driving means for driving the piezoelectric element as a speaker by outputting the acoustic data to the electrodes of the piezoelectric element.

Communication device

Living-tissue pattern detecting method, living-tissue pattern detecting device, biometric authentication method, and biometric authentication device

A gait waveform feature extracting method and an individual identification system extract features of the gait waveform. A one-step waveform corresponding to one step of a walking movement is specified using, as an index, a peak amplitude corresponding to a state where substantially a whole bottom surface of one foot is in contact with the ground and a toe of the other foot is just after leaving the ground among the electric field displacement formed on the human body in accordance with the human body's walking movements. Based on the specified one-step waveform, the features of the one-step waveform are extracted, so that the peak amplitude appears without influence from electric-charge interference between the right and left legs. Accordingly, the one-step waveform reflects the actual one step of the walking movement, and therefore, the features of the one-step waveform can be precisely extracted.

Gait waveform feature extracting method and individual identification system

An apparatus and a method for personal identification include an image pickup section for picking up an image of a blood vessel pattern of a wrist, a storage unit for storing in advance an image of a blood vessel pattern of a certain person as a registered image, and a control section (CPU) for the computation of degrees of similarity according to data differences between the image of the blood vessel pattern picked up by the image pickup section and the registered image to determine identification according to the relationship between the computed degrees of similarity and a threshold, thereby eliminating the need to carry out processing by a characteristic extraction section or the like.

Apparatus, method, and program for personal identification

A walking gait detection apparatus includes a microphone for picking up low-frequency-band sounds that are transmitted through the body of a pedestrian while walking and an analyzer for performing analysis. Accordingly, the gait of the pedestrian is detected. It is also possible to distinguish the gait pattern on the basis of the stance-phase time of a foot sole and the signal intensity, for example. The gait detection apparatus can accurately estimate the stride length on the basis of a detected gait cycle, the height of the pedestrian, and signals detected during walking. On the basis of low-frequency sounds picked up by the microphone while the pedestrian is walking, the pedestrian can be identified.

Growing community of inventors

Kanagawa, Japan

Kiyoaki Takiguchi