Finger identification apparatus

• US 8,649,571 B2
• Filed: 04/03/2013
• Issued: 02/11/2014
• Est. Priority Date: 07/19/2001
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Nagasaka, Akio, Miyatake, Takafumi, Miura, Naoto, Amano, Yoshiaki, Kasai, Yoshimi, Umemura, Shinichiro, Kono, Miyuki
• Primary Examiner(s): Punnoose, Roy M
• Application Number:
  US13/855,774
• Publication Number:
  US 20130216105A1
• Time in Patent Office: 314 Days
• Field of Search: 382/115, 356/71, 356/72
• US Class Current: 382/115
• CPC Class Codes: G06V 40/10 Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
• CPC Class Codes: G06V 40/1347 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/14 Vascular patterns
• CPC Class Codes: G06V 40/145 Sensors therefor
• CPC Class Codes: G06V 40/63 by static guides

Abstract

An identification apparatus keeps the conditions for imaging uniform among successive identifications, and requires a user to perform only a series of simple maneuvers. The apparatus comprises a guide member, a light source, and an imaging unit. The guide member includes a pattern or structure for a user to position his/her finger thereon or to approach his/her specific finger region thereto. A contact member is located in the guide member where a fingertip is positioned. An optical opening is formed at a position coincident with where a finger to be imaged should be placed. The light source radiates near-infrared light through the portion of the finger to be imaged. The imaging means acquires an image of the finger, and the apparatus compares the image to previously registered images. The apparatus may also include dual light sources power saving functionality, and means for limiting the interference of external light sources.

Claims

1. A vessel pattern imaging apparatus comprising:

a case having a guide member to set a finger,

a light source irradiating light to the finger,

an opening formed on the guide member to pass the light through the finger, and

an imaging unit imaging the light passed to the opening,

wherein a part of the case has a projected form so that the upper part of the guide member is open,

the light source is set at a slant upper position of a projected part of the case, and

a surface of the projected part exposed outside prevents invasion of extraneous light.

2. A vessel pattern imaging apparatus according to claim 1, wherein

an imaging is captured by the imaging unit, and

the imaging unit sends an identification unit which extracts features of the vessel pattern from the imaging, and checks the vessel pattern with a registered pattern.

3. A vessel pattern imaging apparatus comprising:

a case having a place to set a finger,

a light source irradiating light to the finger,

an opening formed on the place to pass the light through the finger, and

an imaging unit imaging the light passing through the opening,

wherein a part of the case has a convex form so that the upper part of the guide member is open,

the light source is set at a slant upper position of the convex part of the case, and

wherein surface of the convex part exposed outside prevents invasion of extraneous light.

4. A vessel pattern imaging apparatus according to claim 3, wherein

an imaging is captured by the imaging unit, and

the imaging unit sends an identification unit which extracts features of the vessel pattern from the imaging, and checks the vessel pattern with a registered pattern.

5. An personal identification apparatus comprising:

a case having a guide member to set a finger,

a light source irradiating light to the finger,

an opening formed on the guide member to pass the light through the finger,

an imaging unit imaging the light passing through the opening, and

an identification unit extracting features of the vessel pattern from the imaging, and checking the vessel pattern with a registered pattern,

wherein a part of the case has a projected form so that the upper part of the guide member is open,

the light source is set at a slant upper position of the projected part of the case, and

a surface of the projected form part exposed outside prevents invasion of extraneous light.