Multi-biometric finger sensor including electric field sensing pixels and associated methods
First Claim
1. A multi-biometric finger sensor apparatus comprising:
- an integrated circuit substrate for receiving a user'"'"'s finger adjacent thereto;
a plurality of electric field fingerprint sensing pixels on said integrated circuit substrate for sensing an image of the user'"'"'s finger, each of said plurality of electric field fingerprint sensing pixels comprisingan electric field sensing electrode,a guard shield surrounding said electric field sensing electrode, andan amplifier connected between said electric field sensing electrode and said guard shield,at least one other finger biometric characteristic sensor on said integrated circuit substrate for sensing a finger biometric characteristic different than the image of the user'"'"'s finger;
a finger drive electrode adjacent said plurality of electric field sensing pixels; and
a processor connected to said plurality of electric field fingerprint sensing pixels and said at least one other finger biometric characteristic sensor.
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Accused Products
Abstract
A multi-biometric finger sensor includes a plurality of electric field fingerprint sensing pixels on an integrated circuit substrate for sensing an image of the user'"'"'s finger, and at least one other finger biometric characteristic sensor on the integrated circuit substrate for sensing a finger biometric characteristic different than the image of the user'"'"'s finger. Each of the electric field fingerprint sensing pixels may include an electric field sensing electrode, a guard shield surrounding the electric field sensing electrode, and an amplifier connected between the electric field sensing electrode and the guard shield. The sensor may also include a finger drive electrode adjacent the plurality of electric field sensing pixels, and a processor connected to the electric field fingerprint sensing pixels and the at least one other finger biometric characteristic sensor.
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Citations
29 Claims
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1. A multi-biometric finger sensor apparatus comprising:
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an integrated circuit substrate for receiving a user'"'"'s finger adjacent thereto; a plurality of electric field fingerprint sensing pixels on said integrated circuit substrate for sensing an image of the user'"'"'s finger, each of said plurality of electric field fingerprint sensing pixels comprising an electric field sensing electrode, a guard shield surrounding said electric field sensing electrode, and an amplifier connected between said electric field sensing electrode and said guard shield, at least one other finger biometric characteristic sensor on said integrated circuit substrate for sensing a finger biometric characteristic different than the image of the user'"'"'s finger; a finger drive electrode adjacent said plurality of electric field sensing pixels; and a processor connected to said plurality of electric field fingerprint sensing pixels and said at least one other finger biometric characteristic sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-biometric finger sensor comprising:
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an integrated circuit substrate for receiving a user'"'"'s finger adjacent thereto; a plurality of electric field fingerprint sensing pixels on said integrated circuit substrate for sensing an image of the user'"'"'s finger, each of said plurality of electric field fingerprint sensing pixels comprising an electric field sensing electrode, a guard shield surrounding said electric field sensing electrode, and an amplifier connected between said electric field sensing electrode and said guard shield; and a plurality of finger biometric characteristic sensing pixels on said integrated circuit substrate for sensing a finger biometric characteristic different than the image of the user'"'"'s finger. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for multi-biometric finger sensing comprising:
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receiving a user'"'"'s finger adjacent an integrated circuit substrate; sensing an image of the user'"'"'s finger by using a plurality of electric field fingerprint sensing pixels on the integrated circuit substrate, each electric field fingerprint sensing pixel comprising an electric field sensing electrode, a guard shield surrounding the electric field sensing electrode, and an amplifier connected between the electric field sensing electrode and the guard shield; and sensing a finger biometric characteristic different than the image of the user'"'"'s finger by using at least one other finger biometric characteristic sensor on the integrated circuit substrate. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification