Methods and apparatus for acquiring a swiped fingerprint image
First Claim
1. A method comprising:
- sensing, via a finger position sensing circuit, axially aligned to a direction of motion of a finger of a user during a swipe of the finger over a linear one-dimensional capacitive fingerprint image sensor array, a position of the finger of the user relative to the linear one-dimensional capacitive fingerprint image sensor array; and
providing to the user, in response to the position of the finger as sensed by the finger position sensing circuit, an indication whether the finger is properly positioned to begin a fingerprint image sensing swipe over the linear one-dimensional capacitive fingerprint image sensor array.
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Abstract
A method for assisting a user of a fingerprint sensing system includes sensing a position of a user'"'"'s finger relative to a swiped fingerprint image sensor, and providing to the user, in response to the sensed finger position, an indication of finger placement relative to the fingerprint image sensor. The indication of finger placement may include a display on a computer monitor of actual finger placement and desired finger placement. The fingerprint sensing system may include an image sensor to sense a fingerprint on a swiped finger, a finger position sensor to sense the position of the finger relative to the image sensor, and processing apparatus to provide the indication of finger placement to the user.
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Citations
27 Claims
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1. A method comprising:
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sensing, via a finger position sensing circuit, axially aligned to a direction of motion of a finger of a user during a swipe of the finger over a linear one-dimensional capacitive fingerprint image sensor array, a position of the finger of the user relative to the linear one-dimensional capacitive fingerprint image sensor array; and providing to the user, in response to the position of the finger as sensed by the finger position sensing circuit, an indication whether the finger is properly positioned to begin a fingerprint image sensing swipe over the linear one-dimensional capacitive fingerprint image sensor array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A fingerprint sensing system comprising:
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a linear one dimensional capacitive fingerprint image sensor array configured to sense ridge peaks and ridge valleys of a fingerprint on a finger swiping over the linear one-dimensional capacitive fingerprint image sensor array; a finger position sensing circuit configured to sense a position of the finger relative to the linear one-dimensional capacitive fingerprint image sensor array; and a processing apparatus configured to provide to a user, in response to a position of the finger as sensed by the position sensing circuit, an indication indicating a finger movement needed to correctly position the finger relative to the linear one-dimensional capacitive fingerprint image sensor array to begin a fingerprint image sensing swipe over the linear one-dimensional capacitive fingerprint image sensor array. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A tangible machine readable medium storing instructions that, when executed by a computing device, cause the computing device to perform a method, the method comprising:
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determining, based on input from a finger position sensing circuit, axially aligned to a direction of motion of a finger of a user during a swipe of the finger over a linear one-dimensional capacitive fingerprint image sensor array, a position of the finger relative to the linear one-dimensional capacitive electronic fingerprint image sensor array; and providing to the user, in response to the position of the finger as sensed by the finger position sensing circuit, an indication that the finger is properly positioned to begin a fingerprint image sensing swipe across the linear one-dimensional capacitive fingerprint image sensor array.
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Specification