Method of identification of living body and apparatus for identification of living body

• US 20070030115A1
• Filed: 03/24/2005
• Published: 02/08/2007
• Est. Priority Date: 03/26/2004
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ouchi, Toshihiko, Itsuji, Takeaki
• Granted Patent: US 7,922,659 B2
• Time in Patent Office: Days
• US Class Current: 340/5.800
• CPC Class Codes: A61B 3/112 for measuring diameter of pupils
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/0507 using microwaves or terahertz waves
• CPC Class Codes: A61B 5/1171 based on the shapes or appearances of their bodies or parts thereof
• CPC Class Codes: A61B 5/1172 using fingerprinting
• CPC Class Codes: A61B 5/4869 Determining body composition
• CPC Class Codes: A61B 7/006 Detecting skeletal, cartilage or muscle noise A61B7/003 and A61B7/008 take precedence
• CPC Class Codes: G01S 13/02 Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
• CPC Class Codes: G01S 13/0209 Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
• CPC Class Codes: G01S 13/08 Systems for measuring distance only indirect measurement G01S13/46
• CPC Class Codes: G01S 7/411 Identification of targets based on measurements of radar reflectivity G01S7/415 takes precedence
• CPC Class Codes: G07C 9/257 electronically G07C9/26 takes precedence

Abstract

A method of identification of a living body is provided. The method comprises steps of detecting an electromagnetic wave in a frequency band ranging from 300 GHz to 30 THz transmitted from the living body, extracting plural kinds of information from the detected electromagnetic wave, and deriving therefrom information on the living body and information inherent to the living body, and comparing the information on the living body and the information inherent to the living body with preliminarily memorized information. This method identifies an individual living body with improved real-time detectableness and higher security to prevent illegal pretension.

Claims

1. A method of identification of a living body, comprising the steps of:

detecting an electromagnetic wave in a frequency band ranging from 300 GHz to 30 THz transmitted from the living body;

extracting plural kinds of information from the detected electromagnetic wave derive therefrom information on the living body and information inherent to the living body; and

comparing the information on the living body and the information inherent to the living body with preliminarily memorized information.

2. The method of identification according to claim 1, wherein the information on a living body is any one selected from the group consisting of information on movement of the living body and information on a property of a material comprised of the living body.

3. The method of identification according to claim 2, wherein the information on movement of the living body is any one selected from the group consisting of pulse vibration, voice cord variation, bone vibration, shape change of eye lens, pupil contraction and pupil dilation.

4. The method of identification according to claim 2, wherein the information on a property of a material comprised of the living body is any one selected from the group consisting of a temperature of the living body, absorption of the electromagnetic wave by the living body, reflection of the electromagnetic wave by the living body, an impedance of the living tissue, a dielectric constant of a tissue of the living body, DNA, and a water content of a tissue of the living body.

5. The method of identification according to claim 1, wherein the information inherent to the living body is any one selected from the group consisting of a fingerprint, a voiceprint and a retina pattern.

6. The method of identification according to claim 1, wherein the step of detecting an electromagnetic wave is comprised of the step of projecting an electromagnetic pulse wave to the living body to detect a reflected wave of the electromagnetic wave.

7. An apparatus for identifying a living body, comprising:

a detecting section for detecting an electromagnetic wave in a frequency band ranging from 300 GHz to 30 THz transmitted from the living body;

an information-collecting section for extracting plural kinds of information from the detected electromagnetic wave to derive therefrom information on the living body and information inherent to the living body; and

an identifying section for comparing the information on the living body and the information inherent to the living body with preliminarily memorized information to identify the living body.