IRIS BIOMETRIC RECOGNITION MODULE AND ACCESS CONTROL ASSEMBLY

• US 20150098630A1
• Filed: 10/08/2014
• Published: 04/09/2015
• Est. Priority Date: 10/08/2013
• Status: Active Grant

• Current Assignee: Princeton Identity Inc.
• Original Assignee: SRI International, Inc.
• Inventors: Perna, Steven N., Margicin, John M., Clifton, Mark A., Kim, Jongjin, Varma, Bobby S., Piro, Stephen J., Mapen, Barry E., Richards, Kevin P., Ackerman, David Alan, Lanzillotto, Ann-Marie, Wade, David J., Davis, Timothy J., Fleisch, Michael P., Bhangley, Jitendra J., Van Sant, Glen J., Bergen, James R.
• Granted Patent: US 9,836,648 B2
• Time in Patent Office: Days
• US Class Current: 382/117
• CPC Class Codes: E05B 49/006 actuating opto-electronic devices
• CPC Class Codes: E05B 63/00 Locks or fastenings with special structural characteristics
• CPC Class Codes: E05B 65/00 Locks or fastenings for special use
• CPC Class Codes: G06V 40/19 Sensors therefor
• CPC Class Codes: G06V 40/193 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/197 Matching; Classification
• CPC Class Codes: G07C 9/00563 using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: Y10T 70/625 Operation and control

Abstract

An iris biometric recognition module includes technology for capturing images of an iris of an eye of a person, whether the person is moving or stationary, and whether the person is located near the iris image capture device or at a distance from the iris image capture device. The iris biometric recognition technology can perform an iris matching procedure for, e.g., authentication or identity verification purposes. The iris biometric recognition module can be incorporated into, for example, a door lock assembly and other access controlled devices, mechanisms, and systems.

Claims

1. An iris biometric access control system comprising:

one or more non-transitory machine readable storage media, and, embodied in the one or more non-transitory machine readable storage media;

an iris image capture module to

by a face imager, detect the presence of a human face in a capture zone defined at least in part by a field of view of the face imager;

in response to detection of the human face in the capture zone, align a lens of an iris imager with an iris of the detected human face;

operate an illuminator to illuminate the iris; and

operate the iris imager to produce a plurality of digital images; and

an iris image processing and matching module to;

select one or more of the received iris images for matching;

extract a usable portion from each of the selected iris images;

compare the extracted portion of each of the selected iris images to a reference iris image; and

in response to the comparison of the extracted portions of the selected images and the reference image, operate an access control mechanism.

2. The iris biometric access control system of claim 1, wherein the iris image capture module is to align the iris imager with the iris of the detected human face by operating a motor.

3. The iris biometric access control system of claim 1, wherein the iris image capture module is to substantially synchronously operate the illuminator and the iris imager to produce the plurality of digital images of the iris.

4. A door lock assembly comprising:

a housing, and, supported by the housing;

a door lock mechanism; and

an iris biometric recognition module in communication with the door lock mechanism.

5. The door lock assembly of claim 4, comprising a cover coupled to the housing, wherein the cover and the housing define an interior region, and the iris biometric recognition module is disposed within the interior region.

6. The door lock assembly of claim 5, wherein the cover comprises a window positioned adjacent the iris biometric recognition module and the window is made of a material that transparent to infrared light.

7. The door lock assembly of claim 4, wherein the iris biometric recognition module comprises a power supply, and powered by the power supply:

an iris imager assembly and an iris imager control module in communication with the iris imager assembly.

8. The door lock assembly of claim 7, comprising a pivot support and an electric motor coupled to the pivot support by a pivot linkage, wherein the iris biometric recognition module is supported by the pivot member.

9. The door lock assembly of claim 8, wherein the iris imager assembly comprises an infrared illuminator and a narrow field of view imager adjacent the infrared illuminator.

10. The door lock assembly of claim 9, wherein the iris imager assembly comprises a baffle disposed between the infrared illuminator and the narrow field of view imager.

11. The door lock assembly of claim 7, comprising a face imager assembly supported by the housing, wherein the face imager assembly comprises a wide field of view imager and an infrared illuminator adjacent the wide field of view imager.

12. The door lock assembly of claim 4, comprising a power supply supported by the housing, wherein the power supply is operably coupled to the door lock mechanism and the iris biometric recognition module.

13. The door lock assembly of claim 4, comprising a handle supported by the housing, wherein the handle is operably coupled to the door lock mechanism.

14. A method for operating a door lock in response to iris biometric recognition, the method performed by a door lock assembly, the method comprising:

detecting a human subject approaching the door lock, and, while the human subject is approaching the door lock;

operating a face imager assembly to determine the location of the human subject'"'"'s face;

operating an iris imager assembly to capture a plurality of iris images, each of the iris images depicting at least a portion of an iris of an eye of the human subject;

selecting an iris image of the plurality of iris images;

comparing at least a portion of the selected iris image to a reference image; and

in response to the comparison of at least a portion of the selected iris image to the reference image, operating the door lock.

15. The method of claim 14, wherein operating the face imager assembly comprises operating an infrared illuminator of the face imager assembly and operating a wide field of view imager of the face imager assembly.

16. The method of claim 14, wherein operating the iris imager assembly comprises coordinating the operation a plurality of infrared illuminators of the iris imager assembly with the operation of an iris imager of the iris imager assembly.

17. The method of claim 16, comprising substantially simultaneously performing a focal sweep operation with the iris imager and performing a pulsing illumination operation with the plurality of infrared illuminators.

18. The method of claim 14, comprising operating the face imager assembly in response to the human subject being detected in the range of at least about forty-five centimeters away from the door lock.