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公开(公告)号：US10860831B2
公开(公告)日：2020-12-08
申请号：US16679067
申请日：2019-11-08
申请人： InvenSense, Inc.
IPC分类号： G06K9/00
摘要： A method for generating an image is provided. The method comprises capturing a first set of image pixels by an ultrasonic sensor comprising an array of ultrasonic transducers using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of transmit signals routed to a plurality of ultrasonic transducers of the ultrasonic sensor. The method further comprises capturing a second set of image pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of transmit signals routed to the plurality of ultrasonic transducers. The second beamforming pattern is different than the first beamforming pattern. The second set of image pixels corresponds to an edge region of the ultrasonic sensor. The method additionally comprises combining the first set of image pixels and the second set of image pixels to form the image. An electronic device and a method of generating an image of a fingerprint with a fingerprint sensor are also provided.
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公开(公告)号：US10562070B2
公开(公告)日：2020-02-18
申请号：US15589930
申请日：2017-05-08
申请人： InvenSense, Inc.
IPC分类号： B06B1/06
摘要： An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers including a plurality of sub-arrays of ultrasonic transducers, wherein a sub-array of ultrasonic transducers of the plurality of sub-arrays of ultrasonic transducers is independently controllable, and wherein a sub-array of ultrasonic transducers has an associated receive channel. A plurality of shift registers is configured to select a receive pattern of ultrasonic transducers of the two-dimensional array of ultrasonic transducers to activate during a receive operation. An array controller is configured to control selection of the ultrasonic transducers during the receive operation according to the receive pattern and configured to shift a position of the receive pattern within the plurality of shift registers such that the ultrasonic transducers activated during the receive operation moves relative to and within the two-dimensional array of ultrasonic transducers.
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公开(公告)号：US10325915B2
公开(公告)日：2019-06-18
申请号：US15294186
申请日：2016-10-14
申请人： InvenSense, Inc.
发明人： James Christian Salvia , Michael H. Perrott , Marian Voros , Eldwin Ng , Julius Ming-Lin Tsai , Nikhil Apte
IPC分类号： H01L27/00 , H01L27/092 , G06K9/00 , G06F3/0354 , B06B1/06 , B81C1/00 , H01L21/8238
摘要： An electronic device includes a plurality of CMOS control elements arranged in a two-dimensional array, where each CMOS control element of the plurality of CMOS control elements includes semiconductor devices. The plurality of CMOS control elements each including a PMOS semiconductor device portion comprising a high voltage PMOS device and a low voltage PMOS device and an NMOS semiconductor device portion comprising a high voltage NMOS device and a low voltage NMOS device. The plurality of CMOS control elements are arranged in the two-dimensional array such that the PMOS semiconductor device portion of a CMOS control element of the plurality of CMOS control elements is only adjacent to other PMOS semiconductor device portions of adjacent CMOS control elements of the plurality of CMOS control elements, and such that the NMOS semiconductor device portion of a CMOS control element of the plurality of CMOS control elements is only adjacent to other NMOS semiconductor device portions of adjacent CMOS control elements of the plurality of CMOS control elements.
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公开(公告)号：US10452887B2
公开(公告)日：2019-10-22
申请号：US15354876
申请日：2016-11-17
申请人： InvenSense, Inc.
发明人： James Christian Salvia , Hao-Yen Tang , Michael H. Perrott , Bruno W. Garlepp , Etienne De Foras
IPC分类号： G06K9/00 , G06F1/3231 , G06F1/3287 , G06F3/043
摘要： In a method for operating a fingerprint sensor comprising a plurality of ultrasonic transducers, a first subset of ultrasonic transducers of the fingerprint sensor are activated, the first subset of ultrasonic transducers for detecting interaction between an object and the fingerprint sensor. Subsequent to detecting interaction between an object and the fingerprint sensor, a second subset of ultrasonic transducers of the fingerprint sensor are activated, the second subset of ultrasonic transducers for determining whether the object is a human finger, wherein the second subset of ultrasonic transducers comprises a greater number of ultrasonic transducers than the first subset of ultrasonic transducers.
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公开(公告)号：US10315222B2
公开(公告)日：2019-06-11
申请号：US15294130
申请日：2016-10-14
申请人： InvenSense, Inc.
发明人： James Christian Salvia , Michael H. Perrott , Marian Voros , Eldwin Ng , Julius Ming-Lin Tsai , Nikhil Apte
IPC分类号： B60B1/00 , B06B1/06 , G06K9/00 , G06F3/0354 , H01L27/092
摘要： An electronic device includes a plurality of CMOS control elements arranged in a two-dimensional array, where each CMOS control element of the plurality of CMOS control elements includes two semiconductor devices. The plurality of CMOS control elements include a first subset of CMOS control elements, each CMOS control element of the first subset of CMOS control elements including a semiconductor device of a first class and a semiconductor device of a second class, and a second subset of CMOS control elements, each CMOS control element of the second subset of CMOS control elements including a semiconductor device of the first class and a semiconductor device of a third class. The plurality of CMOS control elements are arranged in the two-dimensional array such that CMOS semiconductor devices of the first class are only adjacent to other CMOS semiconductor devices of the first class, CMOS semiconductor devices of the second class are only adjacent to other CMOS semiconductor devices of the second class, and CMOS semiconductor devices of the third class are only adjacent to other CMOS semiconductor devices of the third class.
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公开(公告)号：US10706835B2
公开(公告)日：2020-07-07
申请号：US15589951
申请日：2017-05-08
申请人： InvenSense, Inc.
摘要： In a method for transmit beamforming of a two-dimensional array of ultrasonic transducers, a beamforming pattern to apply to a beamforming space of the two-dimensional array of ultrasonic transducers is defined. The beamforming space includes a plurality of elements, where each element of the beamforming space corresponds to an ultrasonic transducer of the two-dimensional array of ultrasonic transducers, where the beamforming pattern identifies which ultrasonic transducers within the beamforming space are activated during a transmit operation of the two-dimensional array of ultrasonic transducers, and wherein at least some of the ultrasonic transducers that are activated are phase delayed with respect to other ultrasonic transducers that are activated. The beamforming pattern is applied to the two-dimensional array of ultrasonic transducers. A transmit operation is performed by activating the ultrasonic transducers of the beamforming space according to the beamforming pattern.
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公开(公告)号：US10600403B2
公开(公告)日：2020-03-24
申请号：US15589941
申请日：2017-05-08
申请人： InvenSense, Inc.
摘要： An ultrasonic sensor includes a two-dimensional array of ultrasonic transducers. A signal generator is configured to generate a plurality of transmit signals, wherein each transmit signal of the plurality of transmit signals has a different phase delay relative to other transmit signals of the plurality of transmit signals. A plurality of shift registers is configured to store a beamforming space including a beamforming pattern to apply to the two-dimensional array, wherein the beamforming pattern identifies a transmit signal of the plurality of transmit signals that is applied to each ultrasonic transducer of the beamforming space that is activated during a transmit operation. An array controller is configured to control activation of ultrasonic transducers during a transmit operation according to the beamforming pattern and configured to shift a position of the beamforming space within the plurality of shift registers such that the beamforming space moves within the two-dimensional array.
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公开(公告)号：US10539539B2
公开(公告)日：2020-01-21
申请号：US15589921
申请日：2017-05-08
申请人： InvenSense, Inc.
IPC分类号： G01N29/34 , G11C19/28 , G11C19/38 , B06B1/06 , G10K11/34 , H01L41/047 , H01L41/113 , H03K17/96
摘要： In a method of using an ultrasonic sensor comprising a two-dimensional array of ultrasonic transducers, a plurality of ultrasonic signals are transmitted according to a beamforming pattern at a position of the two-dimensional array. The beamforming pattern focuses the plurality of ultrasonic signals to location above the two-dimensional array, wherein the beamforming pattern identifies ultrasonic transducers of the two-dimensional array that are activated during transmission of the ultrasonic signals, and wherein at least some ultrasonic transducers of the beamforming pattern are phase delayed with respect to other ultrasonic transducers of the beamforming pattern. At least one reflected ultrasonic signal is received at the position according to a receive pattern, wherein the receive pattern identifies at least one ultrasonic transducers of the two-dimensional array that is activated during the receiving. The transmitting and the receiving are repeated at a plurality of positions of the two-dimensional array.
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公开(公告)号：US10474862B2
公开(公告)日：2019-11-12
申请号：US15611704
申请日：2017-06-01
申请人： InvenSense, Inc.
IPC分类号： G06K9/00
摘要： A method for generating an image is provided. The method comprises capturing a first set of image pixels by an ultrasonic sensor comprising an array of ultrasonic transducers using a first beamforming pattern, wherein the first beamforming pattern comprises a first pattern of transmit signals routed to a plurality of ultrasonic transducers of the ultrasonic sensor. The method further comprises capturing a second set of image pixels at the ultrasonic sensor using a second beamforming pattern, wherein the second beamforming pattern comprises a second pattern of transmit signals routed to the plurality of ultrasonic transducers. The second beamforming pattern is different than the first beamforming pattern. The second set of image pixels corresponds to an edge region of the ultrasonic sensor. The method additionally comprises combining the first set of image pixels and the second set of image pixels to form the image. An electronic device and a method of generating an image of a fingerprint with a fingerprint sensor are also provided.
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公开(公告)号：US11626099B2
公开(公告)日：2023-04-11
申请号：US16921807
申请日：2020-07-06
申请人： InvenSense, Inc.
摘要： In a method for transmit beamforming of a two-dimensional array of ultrasonic transducers, a beamforming pattern to apply to a beamforming space of the two-dimensional array of ultrasonic transducers is defined. The beamforming space includes a plurality of elements, where each element of the beamforming space corresponds to an ultrasonic transducer of the two-dimensional array of ultrasonic transducers, where the beamforming pattern identifies which ultrasonic transducers within the beamforming space are activated during a transmit operation of the two-dimensional array of ultrasonic transducers, such that a generated ultrasonic beam is focused for reflecting from an object in contact with a contact surface of a platen overlying the two-dimensional array of ultrasonic transducers. The beamforming pattern is applied to the two-dimensional array of ultrasonic transducers. A transmit operation is performed by activating the ultrasonic transducers of the beamforming space according to the beamforming pattern.
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