Apparatus and method for a biometric sensor in a handheld mobile wireless communication device

• US 10,068,118 B2
• Filed: 04/28/2014
• Issued: 09/04/2018
• Est. Priority Date: 02/25/2014
• Status: Active Grant

• Current Assignee: Tara Chand Singhal
• Original Assignee: Tara Chand Singhal
• Inventors: Singhal, Tara Chand
• Primary Examiner(s): Regn, Mark
• Application Number:
  US14/263,179
• Publication Number:
  US 20150242673A1
• Time in Patent Office: 1,590 Days
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06V 40/13 Sensors therefor
• CPC Class Codes: G06V 40/67 by interactive indications to the user

Abstract

A smart phone device has a display screen overlaid by a touch screen and a processor and a memory in the device hosting functions to perform display and touch functions. A logic executing in the processor in the device programmed to use a part of the touch screen as a biometric sensor. The logic sets aside a space on the touch screen for that specific space to function as the biometric sensor. The biometric sensor configured to use and uses either a finger of the hand or a thumb and thus captures either a fingerprint or a separate and distinct thumbprint, where a fingerprint and a thumbprint are different biometric samples.

Claims

1. A mobile wireless communication device, comprising:

a handheld device, wherein the handheld device is of a type of a smart phone or a tablet computer, the device has a top side and a bottom side, the topside has a display screen for displaying images and a touch screen that is overlaid over the display screen, and wherein the touch screen simultaneously detects multiple finger touch points, using a capacitive touch sense, for touch control of the device'"'"'s operations;

the device has a processor and a memory and a biometric capture logic stored in the memory and executing in the processor, wherein the biometric capture logic, when activated in the device, causes a temporary display of a touch area, wherein the touch area is displayed on any part of the touch screen that has been pre-selected by a user and visually identifies a space on that part of the touch screen; and

the biometric capture logic, when the user'"'"'s thumb pad or the finger pad is positioned flat on the touch area, detects a gross touch on the touch area, when the aggregate electrical charge collected from the gross touch exceeds a threshold;

the biometric capture logic, when the aggregate charge of the gross touch exceeds the threshold, the biometric capture logic collects a biometric sample of the fingerprint or the thumbprint of a user in the form of a grid of electrical charge values representative of the fingerprint or the thumbprint from the touch area of the part of the touch screen itself.

2. The device as in claim 1, comprising:

a. the capture logic sets aside a space on the touch screen for that specific space to function as the biometric sensor;

b. the biometric sensor configured to use and uses either a finger of the hand or a thumb and thus captures either a fingerprint or a separate and distinct thumbprint, where a fingerprint and a thumbprint are different biometric samples.

3. The device as in claim 1, comprising:

a. the capture logic has a sub-logic A that is activated by a switch activation, marks and displays a pre-specified area via the display screen of the touch screen for capturing a fingerprint and displays instructions for use—

place thumb flat anywhere on the specific marked area;

b. the logic A creates a collection timer waits for collection time expiration, during the time detects gross touch over at least a threshold area of the specified area, and activates a sub-logic B to begin capture of capacitor grid charge data matrix for the specific area and that collects a biometric sample.

4. The device as in claim 3, comprising:

the logic has a sub-logic C that (i) computes quality threshold indicator and annunciates good collection by light or beep or both annunciation in the device and (ii) creates a feature matrix from the charge data matrix.

5. The device as in claim 4, comprising:

a. the logic has a sub-logic D, that compares the feature matrix with a stored feature matrix, makes a decision and conveys results to sub-logic E;

b. sub-logic E unwinds logic A, B, C and D and launches device specific processing.

6. The device as in claim 1, comprising:

the logic additionally requires input of a PIN using touch screen, uses the PIN to create an encryption key, encrypts the biometric sample and wirelessly transmits an authentication record with the encrypted sample along with a device identifier to a network device.

7. The device as in claim 6, comprising:

the logic additionally includes in the wirelessly transmitted authentication record a GPS location data and a time of use from the device to the network device.

8. A thumbprint biometric sensor device comprising:

an electronic device with a CPU and a memory and a display screen that displays images and wherein the display screen is overlaid with a touch screen with a grid of capacitive touch points, wherein the touch screen simultaneously detects multiple touch points, and wherein the grid density of the capacitive touch points is substantially 250 pixels per inch;

a biometric capture logic stored in the memory and executing in the CPU causes a temporary display on the display screen a marked surface area, wherein the location of the marked surface area on the touch screen is user selectable and having a length and width dimension that accommodates at least a placement of a human thumb flat on the marked surface area to facilitate capture of a thumbprint from the marked surface area;

the capture logic detects a gross touch on any part of the marked surface area, based on the gross touch exceeding an energy threshold, when the user'"'"'s thumb pad is positioned flat on the marked surface area and a duration of the touch exceeding a time threshold, wherein the biometric capture logic using the placement of the thumb on the marked surface area collects a thumbprint biometric sample in the form of a grid of capacitance charge values.

9. The device as in claim 8, comprising:

the capture logic activated only when a thumb placement on the sensor surface is detected by the electronic device.

10. The device as in claim 9, comprising:

the surface area is at least ¾

″

by 1.25″

to accommodate a thumbprint size.

11. The device as in claim 9, comprising:

a. the sensor surface is a part of a touch screen of a mobile wireless handheld communication device;

b. the part of the touch screen is soft marked when the device is turned on to indicate to a user the location of the sensor surface area for placing the thumb.

12. The device as in claim 8, comprising:

the capture logic has quality of print logic that verifies the thumbprint capture and signifies collection of a satisfactory print by a beep and or a light on electronic the device.

13. The device as in claim 8, comprising:

a surface orientation of the sensor surface relative to the electronic device facilitates thumbprint capture when the electronic device is held in the hand.

14. A method for thumbprint biometric sensor device comprising the steps of:

providing an electronic device with a CPU and a memory and a display screen for displaying images overlaid with a touch screen with a grid of capacitive touch points, wherein the touch screen simultaneously detects multiple touch points, and wherein the grid density of the capacitive touch points is substantially 250 pixels per inch;

storing in the memory and executing in the CPU a biometric capture logic, displaying by the capture logic on the display screen a marked surface area, wherein the location of the marked surface area on the touch screen is user selectable and having a length and width dimension that accommodates at least a placement of a human thumb flat on the marked surface area to facilitate capture of a thumbprint from the marked surface area;

detecting by the capture logic a gross touch on any part of the marked surface area, based on the gross touch exceeding an energy threshold, when the user'"'"'s thumb pad is positioned flat on the marked surface area and a duration of the touch exceeding a time threshold, wherein the biometric capture logic using the placement of the thumb on the marked surface area collects a thumbprint biometric sample in the form of a grid of capacitance charge values.

15. The method as in claim 14, comprising the steps of:

providing the sensor surface area larger in one dimension relative to another dimension to match a size of a human thumb.

16. The method as in claim 14, comprising the steps of:

activating the capture logic only when a thumb placement on the sensor surface is detected by the electronic device.

17. The method as in claim 14, comprising the steps of:

computing a quality of print logic in the capture logic has that verifies the thumbprint capture and signifies collection of a good print by a beep and or a light on the device.

18. The method as in claim 14, comprising the steps of:

providing a surface orientation of the sensor surface relative to the electronic device facilitates thumbprint capture when the electronic device is held in the hand.

19. The method as in claim 14, comprising the steps of:

providing the surface area is at least ¾

″

by 1.25″

to accommodate a thumbprint size.

20. The method as in claim 14, comprising the steps of:

a. providing the sensor surface as a part of a touch screen of a mobile wireless communication device;

b. marking the part of the touch screen temporarily marked or soft marked when the device is turned on to indicate to a user the location of the sensor surface area for placing the thumb.