Biometrics authentication device and portable terminal
First Claim
1. A biometric authentication device for identifying an individual who is associated with a subject based on a biometric pattern of the subject which is included in a picked up image, comprising:
- a light guiding unit for outputting, from a surface thereof, light incident on an end face thereof;
a liquid crystal display unit for adjusting, on a display pixel basis, an intensity of light output from the surface of the light guiding unit, and then outputting the light in a direction of the subject;
an image pickup unit for picking up an image of the subject;
a display light source for emitting light used as a backlight of the liquid crystal display unit such that the light is incident on the end face of the light guiding unit;
a detection light source for emitting light for irradiating the subject such that the light is incident on the end face of the light guiding unit; and
a control unit for controlling processing of the biometric authentication device, wherein;
the control unit turns on the detection light when the image pickup unit picks up a first image, which is used for authentication;
the control unit turns on the display light source when the liquid crystal display unit displays information;
the control unit creates a mask image including a non-irradiation region, which blocks the light output from the light guiding unit, and an irradiation region, which transmits the light output from the light guiding unit, according to a placement location of the subject;
when the image pickup unit picks up the first image, the liquid crystal display unit displays the created mask image;
the image pickup unit picks up a fourth image when the detection light source is lit and the liquid crystal display unit displays the created mask image; and
based on the picked up fourth image, the control unit determines a display darkness of the liquid crystal display unit in the irradiation region included in the created mask image.
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Accused Products
Abstract
Provided is a biometric authentication device for identifying an individual based on a biometric pattern of the subject included in a picked up image. The biometric authentication device includes: a light guiding unit for outputting light from a surface thereof; a liquid crystal display (LCD) unit for adjusting, on a display pixel basis, an intensity of light output from the surface of the light guiding unit; an image pickup unit for picking up an image of the subject; a display light source for emitting light used as a backlight of the LCD unit; a detection light source for emitting light for irradiating the subject; and a control unit for controlling processing of the biometric authentication device The control unit turns on the detection light when the image pickup unit picks up a first image, which is used for authentication, and turns on the display light source when the LCD unit displays information.
9 Citations
9 Claims
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1. A biometric authentication device for identifying an individual who is associated with a subject based on a biometric pattern of the subject which is included in a picked up image, comprising:
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a light guiding unit for outputting, from a surface thereof, light incident on an end face thereof; a liquid crystal display unit for adjusting, on a display pixel basis, an intensity of light output from the surface of the light guiding unit, and then outputting the light in a direction of the subject; an image pickup unit for picking up an image of the subject; a display light source for emitting light used as a backlight of the liquid crystal display unit such that the light is incident on the end face of the light guiding unit; a detection light source for emitting light for irradiating the subject such that the light is incident on the end face of the light guiding unit; and a control unit for controlling processing of the biometric authentication device, wherein; the control unit turns on the detection light when the image pickup unit picks up a first image, which is used for authentication; the control unit turns on the display light source when the liquid crystal display unit displays information; the control unit creates a mask image including a non-irradiation region, which blocks the light output from the light guiding unit, and an irradiation region, which transmits the light output from the light guiding unit, according to a placement location of the subject; when the image pickup unit picks up the first image, the liquid crystal display unit displays the created mask image; the image pickup unit picks up a fourth image when the detection light source is lit and the liquid crystal display unit displays the created mask image; and based on the picked up fourth image, the control unit determines a display darkness of the liquid crystal display unit in the irradiation region included in the created mask image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable terminal provided with a biometric authentication device for identifying an individual who is associated with a subject based on a biometric pattern of the subject which is included in a picked up image, comprising:
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a light guiding unit for outputting, from a surface thereof, light incident on an end face thereof; a liquid crystal display unit for adjusting, on a display pixel basis, an intensity of light output from the surface of the light guiding unit, and then outputting the light in a direction of the subject; an image pickup unit for picking up an image of the subject; a display light source for emitting light used as a backlight of the liquid crystal display unit such that the light is incident on the end face of the light guiding unit; a detection light source for emitting light for irradiating the subject such that the light is incident on the end face of the light guiding unit; and a control unit for controlling processing of the biometric authentication device, wherein; the control unit turns on the detection light when the image pickup unit picks up a first image, which is used for authentication; the control unit turns on the display light source when the liquid crystal display unit displays information; the control unit creates a mask image including a non-irradiation region, which blocks the light output from the light guiding unit, and an irradiation region, which transmits the light output from the light guiding unit, according to a placement location of the subject; when the image pickup unit picks up the first image, the liquid crystal display unit displays the created mask image; the image pickup unit picks up a fourth image when the detection light source is lit and the liquid crystal display unit displays the created mask image; and based on the picked up fourth image, the control unit determines a display darkness of the liquid crystal display unit in the irradiation region included in the created mask image.
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Specification