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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.
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公开(公告)号：US10268864B2
公开(公告)日：2019-04-23
申请号：US15378897
申请日：2016-12-14
Applicant: QUALCOMM Incorporated
Inventor： Richard S. Withers , Ronald B. Koo , Stephen C. Gerber , Arkadii V. Samoilov , David Johnson
Abstract: A fingerprint sensor is described that includes a thin protective cover layer on a sensor glass layer with receive circuitry between the thin protective cover layer and the sensor glass layer. In an implementation, a fingerprint sensor assembly includes a controller; a metal layer configured to be electrically coupled to the controller; a transmit layer electrically connected to the metal layer and the controller; a sensor glass layer, where the transmit layer is disposed on a first side of the sensor glass layer, and where the transmit layer is electrically coupled to the controller; a receive layer disposed on a second side of the sensor glass layer, where the receive layer is electrically coupled to the controller; and a protective cover layer disposed on the receive layer.
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13.发明授权Capacitive touch panel with increased scan frequency using dynamic phase compensation 有权电容式触摸屏采用动态相位补偿增加扫描频率公开(公告)号：US09552117B2
公开(公告)日：2017-01-24
申请号：US14580543
申请日：2014-12-23
Applicant: QUALCOMM Incorporated
Inventor： David Johnson , Guozhong Shen , Firooz Massoudi
CPC classification number: G06F3/044 , G06F3/0416 , G06F3/0418
Abstract: A system includes a first group of transmit electrodes configured to be driven from a first side of a capacitive touch panel and a second group of transmit electrodes configured to be driven from a second side of the panel. The system also includes receive electrodes and a controller operatively coupled with the transmit electrodes and the receive electrodes. The controller is operable to dynamically configure the transmit electrodes and the receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel. A method includes driving a first group of transmit electrodes from a first side of a capacitive touch panel, driving a second group of transmit electrodes from a second side of the panel, and dynamically configuring the transmit electrodes and receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel.
Abstract translation: 一种系统包括构造成从电容式触摸面板的第一侧驱动的第一组发射电极和被配置为从面板的第二侧驱动的第二组发射电极。 该系统还包括接收电极和与发射电极和接收电极可操作地耦合的控制器。 控制器可操作以动态地配置发射电极和接收电极，以补偿通过从面板的不同侧驱动发射电极引入的相位延迟。 一种方法包括从电容式触摸面板的第一侧驱动第一组发射电极，从面板的第二侧驱动第二组发射电极，以及动态地配置发射电极和接收电极以补偿引入的相位延迟 通过从面板的不同侧驱动发射电极。
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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.
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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.
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