-
公开(公告)号：US11294516B2
公开(公告)日：2022-04-05
申请号：US17202843
申请日：2021-03-16
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
公开(公告)号：US20210150239A1
公开(公告)日：2021-05-20
申请号：US16686063
申请日：2019-11-15
Applicant: QUALCOMM Incorporated
Inventor： Soon Joon Yoon , Changting Xu , Hrishikesh Panchawagh , Kostadin Dimitrov Djordjev
Abstract: Methods, systems, and devices for anti-spoofing detection are described. The methods, systems, and devices include scanning, by a sensor associated with a device, an object placed within a scanning distance of the sensor, identifying a test signal based on scanning the object, comparing the test signal to a reference signal, identifying a first match between the object and a biometric model based on the comparing, identifying, based on the scanning, a second match between a first biometric pattern associated with the object and a stored second biometric pattern, and enabling access to a secure resource associated with the device based on the first match and the second match.
-
公开(公告)号：US20200160018A1
公开(公告)日：2020-05-21
申请号：US16197494
申请日：2018-11-21
Applicant: QUALCOMM Incorporated
Inventor： Hrishikesh Panchawagh , Kostadin Djordjev
Abstract: The described architecture and techniques may provide for ultrasonic sensing using transmit and receive beamforming using an ultrasonic sensor with a continuous (e.g., non-segmented) blanket layer of piezo-sensitive material between a common electrode and an array of electrodes. For example, an ultrasonic biometric sensor may utilize a continuous blanket layer of piezo-sensitive material (e.g., such as a continuous copolymer, in lieu of an array of piezoelectric elements) between a common electrode and an electrode array for transmit and receive beamforming. The electrode array may employ individual transmission cycle control for each electrode to perform aspects of ultrasonic transmit and receive beamforming for biometric sensing/imaging. The continuous copolymer (e.g., or other blanket layer of piezo-sensitive material) may provide for a thin layer, between the common electrode and the electrode array, with desirable material properties to isolate each pixel from neighboring pixels and enable effective ultrasonic transmit and receive beamforming.
-
公开(公告)号：US11537245B2
公开(公告)日：2022-12-27
申请号：US17710615
申请日：2022-03-31
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
公开(公告)号：US10969913B2
公开(公告)日：2021-04-06
申请号：US16899174
申请日：2020-06-11
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
Patent Agency Ranking
公开(公告)号：US20230097016A1
公开(公告)日：2023-03-30
申请号：US18073362
申请日：2022-12-01
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
公开(公告)号：US20150165479A1
公开(公告)日：2015-06-18
申请号：US14569256
申请日：2014-12-12
Applicant: QUALCOMM Incorporated
Inventor： Jon Bradley Lasiter , Ravindra Vaman Shenoy , Evgeni Petrovich Gousev , Hrishikesh Panchawagh , David William Burns , Nai-Kuei Kuo , Jonathan Charles Griffiths , Suryaprakash Ganti
CPC classification number: B06B1/0666 , G06F3/0412 , G06F3/043 , G06F3/0436 , G06K9/0002 , G06K9/00335 , G10K9/125 , H01L41/0973 , H01L41/22 , H01L41/31 , Y10T29/42
Abstract: A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a multilayer stack disposed on a substrate. The multilayer stack may include an anchor structure disposed over the substrate, a piezoelectric layer stack disposed over the anchor structure, and a mechanical layer disposed proximate to the piezoelectric layer stack. The piezoelectric layer stack may be disposed over a cavity. The mechanical layer may seal the cavity and, together with the piezoelectric layer stack, is supported by the anchor structure and forms a membrane over the cavity, the membrane being configured to undergo one or both of flexural motion and vibration when the PMUT receives or transmits ultrasonic signals.
Abstract translation: 压电微机械超声换能器（PMUT）包括设置在基板上的多层堆叠。 多层堆叠可以包括设置在衬底上的锚结构，设置在锚结构上的压电层堆叠，以及靠近压电层堆叠设置的机械层。 压电层堆叠可以设置在空腔上。 机械层可以密封空腔，并且与压电层堆叠一起由锚结构支撑并且在空腔上形成膜，该膜被配置为当PMUT接收或传输时经历挠曲运动和振动中的一个或两个 超声信号。
-
公开(公告)号：US11875002B2
公开(公告)日：2024-01-16
申请号：US18073362
申请日：2022-12-01
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
CPC classification number: G06F3/044 , G06F3/047 , G06F3/0416
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
公开(公告)号：US20220229504A1
公开(公告)日：2022-07-21
申请号：US17710615
申请日：2022-03-31
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
公开(公告)号：US20200341568A1
公开(公告)日：2020-10-29
申请号：US16899174
申请日：2020-06-11
Applicant: QUALCOMM Incorporated
Inventor： Richard Stacy Withers , David Johnson , Hrishikesh Panchawagh
Abstract: Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.011 seconds)
