Fingerprint based smartcard

• US 20050150947A1
• Filed: 12/10/2004
• Published: 07/14/2005
• Est. Priority Date: 12/17/2003
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Lill, Mark, Bavarian, Behnam, Goodman, Cathryn E.
• Granted Patent: US 7,028,893 B2
• Time in Patent Office: Days
• US Class Current: 235/380
• CPC Class Codes: A61B 5/1172 using fingerprinting
• CPC Class Codes: G06K 19/0718 the sensor being of the biometric kind, e.g. fingerprint sensors fingerprint sensors in general G06V40/13; biometric access-control systems in general, see G07C9/00
• CPC Class Codes: G06K 19/07354 by biometrically sensitive means, e.g. fingerprint sensitive fingerprint sensors in general G06V40/12; biometrically activated access control G07C9/25
• CPC Class Codes: G06Q 20/40145 Biometric identity checks
• CPC Class Codes: G06V 40/1306 non-optical, e.g. ultrasonic or capacitive sensing
• CPC Class Codes: G07C 9/25 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G07C 9/32 in combination with an identity check
• CPC Class Codes: G07F 7/0806 Details of the card record carriers per se G06K
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system

Abstract

A smartcard device 1200 that includes a single embedded IC chip 1222 that includes smart card circuitry that includes a processor device and memory that is shared with a fingerprint capture device (10) that has a plurality of charge storage devices (12), i.e., the shared memory, that couple through conductive surfaces (22) to conductive spheres (21) that are disposed within an epoxy that comprises a fingerprint contact surface (13). When raised portions of an object (26) appropriately contact certain conductive spheres (21), the corresponding charge storage device (12) will discharge through a separate conductive sphere which is connected to a grounded conductive surface. This discharging serves both to simultaneously sense the asperity features of the object and to store that sensed information as well.

Claims

1. A fingerprint based smartcard comprising:

a fingerprint module comprising a fingerprint capture device, a first processor and a first memory operatively coupled for capturing an initial fingerprint of a user and at least one subsequent fingerprint of the user and for comparing the at least one subsequent fingerprint to the initial fingerprint; and

smartcard circuitry comprising a second processor, a second memory and a communication element operatively coupled together and to the fingerprint module for receiving the results of the comparison and communicating the results to a host system, wherein the fingerprint module and the smartcard circuitry are co-located on a common integrated circuit chip.

2. A fingerprint based smartcard in accordance with claim 1, wherein the fingerprint capture device comprises:

the first memory comprising a first plurality of memory cells wherein each memory cell has a corresponding electrical device; and

a fingerprint contact surface disposed substantially coplanar to the first memory wherein the fingerprint contact surface has a plurality of conductive paths formed through the fingerprint contact surface and wherein at least some of the conductive paths are conductively coupled to at least some of the corresponding electrical devices.

3. A fingerprint based smartcard in accordance with claim 2, wherein the second memory comprises a second plurality of memory cells wherein each memory cell has a corresponding electrical device, wherein the first plurality of memory cells comprises at least a portion of the second plurality of memory cells.

4. A fingerprint based smartcard in accordance with claim 1, wherein the first and the second processors are the same processor.

5. A fingerprint based smartcard in accordance with claim 1, wherein the fingerprint capture device is one of a swipe sensor and a slap sensor.

6. A fingerprint based smartcard in accordance with claim 1, wherein the fingerprint capture device has first dimensions and the common integrated circuit chip has second dimensions that are substantially equal to the first dimensions.

7. A fingerprint based smartcard in accordance with claim 1 further comprising a housing having a frontside and a backside for enclosing the fingerprint module and the smartcard circuitry, wherein the backside of the housing includes an opening for exposing at least a portion of the fingerprint capture device.

8. A fingerprint based smartcard in accordance with claim 7 further comprising at least one contact pad coupled to the frontside of the housing, wherein the smartcard circuitry is operatively coupled to the at least one contact pad for enabling the smartcard circuitry to communicate with the host system.

9. A fingerprint based smartcard in accordance with claim 1, wherein the smartcard circuitry comprises a reader for receiving the results of the comparison and a data bus for transferring the results from the reader to the communication element.

10. A fingerprint based smartcard in accordance with claim 1 further comprising an enable device coupled to the first processor for enabling at least two different users of the smartcard.

11. A fingerprint based smartcard in accordance with claim 1 that is selected from a group consisting of a credit card, a debit card and an identity card.

12. A fingerprint based smartcard in accordance with claim 11, wherein the identity card is selected from a group consisting of a passport, a driver'"'"'s license and a medical history card.

13. A fingerprint based smartcard in accordance with claim 1, wherein the first memory stores Automatic Fingerprint Identification System (AFIS) software that is loaded into the first processor for comparing the at least one subsequent fingerprint to the initial fingerprint of the user.

14. A fingerprint based smartcard in accordance with claim 1, wherein the communication element enables contact-less communication between the smartcard circuitry and the host system.

15. A fingerprint based smartcard in accordance with claim 1 further comprising an asperity detector coupled to the first memory and the first processor.

16. A fingerprint based smartcard in accordance with Clam 15 further comprising a detector controller coupled to the asperity detector and a timer coupled to the detector controller for controlling the asperity detector.

17. A fingerprint based smartcard comprising:

a fingerprint module comprising;

a fingerprint capture device,

a first processor and

a first memory operatively coupled for capturing an initial fingerprint of a user and at least one subsequent fingerprint of the user and for comparing the at least one subsequent fingerprint to the initial fingerprint, the fingerprint capture device comprising the first memory comprising a first plurality of memory cells wherein each memory cell has a corresponding electrical device; and

a fingerprint contact surface disposed substantially coplanar to the first memory wherein the fingerprint contact surface has a plurality of conductive paths formed through the fingerprint contact surface and wherein at least some of the conductive paths are conductively coupled to at least some of the corresponding electrical devices; and

smartcard circuitry comprising a second processor, a second memory and a communication element operatively coupled together and to the fingerprint module for receiving the results of the comparison and communicating the results to a host system, the second memory comprising a second plurality of memory cells wherein each memory cell has a corresponding electrical device, wherein the first plurality of memory cells comprises at least a portion of the second plurality of memory cells.

18. A fingerprint based smartcard in accordance with claim 17, wherein the fingerprint module and the smartcard circuitry are co-located on a common integrated circuit chip.

19. A fingerprint based smartcard in accordance with claim 17, wherein the first and the second processors are the same processor.

20. A fingerprint based smartcard in accordance with claim 17 further comprising:

a housing having a frontside and a backside for enclosing the fingerprint module and the smartcard circuitry, wherein the backside of the housing includes an opening for exposing at least a portion of the fingerprint capture device; and

at least one contact pad coupled to the frontside of the housing, wherein the smartcard circuitry is operatively coupled to the at least one contact pad for enabling the smartcard circuitry to communicate with the host system.