IMAGE GENERATION IN AN ELECTRONIC DEVICE USING ULTRASONIC TRANSDUCERS
First Claim
1. A method for generating a composite image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density, the method comprising:
- capturing a first set of pixels at an ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor;
capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers, wherein the second beamforming pattern is different than the first beamforming pattern, and wherein pixels of the second set of pixels correspond to positions between pixels of the first set of pixels; and
combining the first set of pixels and the second set of pixels to form the composite image.
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Abstract
A method for generating a composite image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density is provided. The method comprises capturing a first set of pixels at an ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor. The method further comprises capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers. The first beamforming pattern and the second beamforming pattern are different. Pixels of the second set of pixels correspond to positions between pixels of the first set of pixels. The method additionally comprises combining the first and second sets of pixels to form the composite image. An electronic device and a method of generating an image of a fingerprint are also provided.
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Citations
30 Claims
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1. A method for generating a composite image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density, the method comprising:
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capturing a first set of pixels at an ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor; capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers, wherein the second beamforming pattern is different than the first beamforming pattern, and wherein pixels of the second set of pixels correspond to positions between pixels of the first set of pixels; and combining the first set of pixels and the second set of pixels to form the composite image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electronic device comprising:
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an ultrasonic sensor; a processing logic module; and a processor connected to the processing logic module and configured to perform the steps of generating a composite image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density by; capturing a first set of pixels at an ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor; capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers, wherein the second beamforming pattern is different than the first beamforming pattern, and wherein pixels of the second set of pixels correspond to positions between pixels of the first set of pixels; and combining the first set of pixels and the second set of pixels to form the composite image. - View Dependent Claims (15, 16, 17)
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18. A method of generating a composite image of a fingerprint with a fingerprint sensor comprising an ultrasonic sensor comprising a plurality of ultrasonic transducers to transmit a first ultrasonic beam from sets of ultrasonic transducers toward a surface configured to receive a finger having the fingerprint thereon and to receive a second ultrasonic beam reflected from the fingerprint, the second ultrasonic beam to generate a signal for processing in a signal processor, the method comprising generating an image having an increased image pixel density by an array of ultrasonic transducers having a given spatial density, the method comprising:
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capturing a first set of pixels at the ultrasonic sensor using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of ultrasonic transducers of the ultrasonic sensor; capturing a second set of pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of ultrasonic transducers, wherein the second beamforming pattern is different than the first beamforming pattern, and wherein pixels of the second set of pixels correspond to positions between pixels of the first set of pixels; and combining the first set of pixels and the second set of pixels to form the image. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification