Apparatus and method for securely processing biometric information to control access to a node

• US 6,181,803 B1
• Filed: 09/30/1996
• Issued: 01/30/2001
• Est. Priority Date: 09/30/1996
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Davis, Derek L.
• Primary Examiner(s): Couso, Jose L.
• Assistant Examiner(s): Dang, Duy M.
• Application Number:
  US08/723,496
• Time in Patent Office: 1,583 Days
• Field of Search: 382/115, 382/116, 382/117, 382/118, 382/119, 382/124, 382/128, 235/380, 235/381, 235/382, 235/383, 235/384, 235/385, 235/386, 235/382.5, 235/375, 235/376, 235/379, 902/1-13, 902/22-27, 902/31-37
• US Class Current: 382/115
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints

Abstract

A biometric device comprises a biometric processor including a data capture circuit that captures data associated with a predetermined biometric characteristic that is checked to regulate access to the node or area. The biometric processor further includes a cryptographic circuit, coupled to the data capture circuit, that internally processes the data clip which may include comparison of the data clip with pre-stored data being a master copy of the predetermined biometric characteristic of the user. Thereafter, the biometric processor transfers a message to the node to control access thereto.

Claims

1. A biometric device for controlling access to a node comprising:

a semiconductor package;

a biometric processor placed in the semiconductor package, the biometric processor including

a data capture circuit contained in the semiconductor package, the data capture circuit to capture a plurality of successive clips of data associated with predetermined biometric characteristic, and

a processing unit coupled to the data capture circuit and contained in the semiconductor package, the processing unit to extrapolate information from at least two data clips of the plurality of successive data clips to produce a composite data clip and compare the composite data clip with a clip of pre-stored data being a master copy of the predetermined biometric characteristic; and

an input source placed outside the semiconductor package, the input source to receive data associated with the predetermined biometric characteristic.

2. The biometric device according to claim 1, wherein the semiconductor package includes an integrated circuit package.

3. The biometric device according to claim 1, wherein the semiconductor package includes a multi-chip package.

4. The biometric device according to claim 3, wherein the data capture circuit includes a pixel capture array to receive and store the data and a control logic circuit to transfer the plurality of successive data clips to the processing unit.

5. The biometric device according to claim 1, wherein the processing unit includes

a computational element that internally processes the plurality of successive data clips; and

a memory unit coupled to the computational element, the memory unit contains the clip of pre-stored data being the master copy of the predetermined biometric characteristic.

6. The biometric device according to claim 5, wherein the processing unit further includes a cryptographic unit coupled to at least the computational element.

7. The biometric device according to claim 6, wherein the computational element being one of a microprocessor and a microcontroller.

8. The biometric device according to claim 6, wherein key information used by the cryptographic unit is contained in the memory unit.

9. The biometric device according to claim 1, wherein the composite data clip has a better resolution than any one of the at least two data clips.

10. The biometric device of claim 1, wherein the input source includes a lens of a camera.

11. The biometric device of claim 1, wherein the input source includes a scanner.

12. The biometric device of claim 1, wherein the input source includes a microphone.

13. The biometric device of claim 1, wherein the data capture circuit includes a charge coupled device.

14. The biometric device of claim 1, wherein a computational element of the processing unit of the biometric processor provides digital data to the node.

15. A biometric device regulating access to a node, comprising:

input means for routing data associated with a predetermined biometric characteristic to be captured; and

cryptographic means for controlling access to the node, the cryptographic means being a semiconductor device that includes

capture means for capturing a plurality of successive data clips of the data associated with the predetermined biometric characteristic at a periodic rate,

processor means for internally producing a composite data clip extrapolating information from at least two data clips of the plurality of successive data clips, comparing the composite data clip with a clip of pre-stored data being a master copy of the predetermined biometric characteristic, and transferring a message to the node to control access thereto, the processor means being coupled to the capture means, and

circuitry packaging means for reducing a risk of physical tampering with the cryptographic means by encapsulating at least the capture means.

16. The biometric device according to claim 15, wherein the processor means further encrypts the message before transfer to the node.

17. A computer comprising:

access control circuitry to control user access to the computer; and

a biometric device in communication with the access control circuitry to respond to periodic messages from the access control circuitry, the biometric device including

a semiconductor package,

a data capture circuit placed in the semiconductor package, the data capture circuit to capture a plurality of successive data clips of a predetermined biometric characteristic, and

a processor coupled to the data capture circuit and placed in the semiconductor package, the processor including

a memory unit to contain a clip of pre-stored data being a master copy of the predetermined biometric characteristic, and

a computational element to extrapolate information from at least two data clips of the plurality of successive data clips to produce a composite data clip to compare the composite data clip with the clip of pre-stored data, and to provide a signal whether a match has been detected.

18. The biometric system of claim 17, wherein the computational element includes a microprocessor.

19. The computer of claim 17, wherein the access control circuitry denies access to the computer if the biometric device fails to respond a message from the access control circuitry within a prescribed period of time.

20. The computer of claim 19 wherein the periodicity of the messages is dynamic in nature.

21. The computer of claim 17, wherein the semiconductor package of the biometric device includes a single integrated circuit package.

22. The computer of claim 17, wherein the semiconductor package of the biometric device includes a multi-chip package.

23. Implemented within a semiconductor package, a biometric processor comprising:

a data capture circuit placed in the semiconductor package, the data capture circuit to capture a plurality of successive clips of data associated with a predetermined biometric characteristic; and

a processing unit coupled to the data capture circuit and placed in the semiconductor package, the processing unit extrapolating information from at least two data clips of the plurality of successive data clips to produce a composite data clip and comparing the composite data clip with a clip of pre-stored data being a master copy of the predetermined biometric characteristic.

24. The biometric processor of claim 23, wherein the composite data clip having a better resolution than any one of the at least two data clips.

25. The biometric processor of claim 23, wherein the semiconductor package includes a single integrated circuit package.

26. The biometric processor of claim 23, wherein the semiconductor package includes a multi-chip package.