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公开(公告)号：US09971421B2
公开(公告)日：2018-05-15
申请号：US14199210
申请日：2014-03-06
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Chee Weng Cheong , Leonard Liviu Dinu , Dianbo Guo , Kien Beng Tan
CPC classification number: G06F3/03545 , G06F3/038 , G06F3/041 , G06F3/0416 , G06F2203/0384 , H04L2027/0097
Abstract: A system and method for synchronizing two devices in communication with each other. When communication between the two devices is to be established, a synchronization process may be invoked. In an embodiment, a first device may initiate sending synchronization signals having rising edge and falling edge pairs. The second device may include a controller configured to receive the synchronization signals. However, noise may inhibit the ability of the controller to correctly receive and/or interpret the synchronization signals. Noise may cause detection components to falsely detect noise as a synchronization signal or may cause detection components to miss detection of an actual synchronization signal. A window generator may be used to generate comparison windows for the controller to detect synchronization signals. Further, the detection window duration and start times may be adjusted based on previously detected (or undetected) synchronization signals in order to compensate for noise overshadowing synchronization signals.
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公开(公告)号：US20180101264A1
公开(公告)日：2018-04-12
申请号：US15838675
申请日：2017-12-12
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0418
Abstract: A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
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33.发明申请公开(公告)号：US20180074619A1
公开(公告)日：2018-03-15
申请号：US15813906
申请日：2017-11-15
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Baranidharan Karuppusamy , Giuseppe Noviello , Chee Weng Cheong , Leonard Liviu Dinu , Dianbo Guo , Kien Beng Tan , Chaochao Zhang
IPC: G06F3/044 , G06F3/0354 , G06F3/041 , G06F3/038
CPC classification number: G06F3/044 , G06F3/03545 , G06F3/0383 , G06F3/0416
Abstract: An active stylus is capacitively coupled to a capacitive touch panel for communication. The active stylus operates in a wait mode to receive initial communications from the panel. In response to such receipt, the active stylus synchronizes to a repeating communications frame implementing time division multiplexing. Communications from the active stylus to the panel include: information communications; synchronization communications and communications specific for columns and/or rows of the panel. Communications from the panel to the active stylus may be addressed uniquely to the stylus or commonly to a group of styluses.
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公开(公告)号：US20180018037A1
公开(公告)日：2018-01-18
申请号：US15208894
申请日：2016-07-13
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Kien Beng Tan
CPC classification number: G06F3/044 , G06F3/0414 , G06F3/0416 , G06F3/0418 , G06F2203/04105 , G06F2203/04111
Abstract: Disclosed herein is an electronic device including a first touch circuit to be coupled to a first touch sensing unit, the first touch sensing unit having first drive lines and first sense lines intersecting the first drive lines. A second touch circuit is to be coupled to a second touch sensing unit, the second touch sensing unit having second drive lines and second sense lines intersecting the second drive lines. A touch force circuit is to be coupled to a touch force sensing unit, the touch force sensing unit having third drive lines and third sense lines intersecting the third drive lines. The first touch circuit, second touch circuit, and touch force circuit are configured to drive the first, second, and third drive lines as a function of a synchronization signal, and acquire data from the first, second, and third sense lines as a function of the synchronization signal.
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Patent Agency Ranking
公开(公告)号：US09523994B2
公开(公告)日：2016-12-20
申请号：US14201590
申请日：2014-03-07
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： CheeWeng Cheong , Kien Beng Tan , Dianbo Guo
Abstract: A current source includes a first current path including a first current mirror transistor and an input current source coupled in series, a second current path including a second current minor transistor, wherein control terminals of the first and second current minor transistors are connected, a first circuit configured to provide a controlled auxiliary current in the second current path, and a second circuit configured to provide a controlled output current in the second current path when or after the auxiliary current has reached steady state. The current source may include one or more cascode transistors in the first current path and one or more cascode transistors in the second current path. The first circuit may be activated before the second circuit is activated.
Abstract translation: 电流源包括包括串联耦合的第一电流镜晶体管和输入电流源的第一电流路径，包括第二电流次级晶体管的第二电流路径，其中连接第一和第二电流次级晶体管的控制端，第一 电路，被配置为在第二电流路径中提供受控的辅助电流;以及第二电路，被配置为在辅助电流达到稳定状态时或之后提供第二电流路径中的受控输出电流。 电流源可以包括第一电流路径中的一个或多个共源共栅晶体管和第二电流路径中的一个或多个共源共栅晶体管。 第一电路可以在第二电路被激活之前被激活。
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36.发明授权Configurable analog front-end for mutual capacitance sensing and self capacitance sensing 有权可配置的模拟前端，用于互电容感测和自电容感测公开(公告)号：US09523725B2
公开(公告)日：2016-12-20
申请号：US14322244
申请日：2014-07-02
Inventor： Kien Beng Tan , Ernesto Lasalandra , Tommaso Ungaretti , Yannick Guedon , Dianbo Guo , Paolo Angelini , Giovanni Carlo Tripoli
CPC classification number: G01R27/2605 , G06F3/0416 , G06F3/044 , G06F2203/04104
Abstract: Capacitance sensing circuits and methods are provided. A dual mode capacitance sensing circuit includes a capacitance-to-voltage converter having an amplifier and an integration capacitance coupled between an output and an inverting input of the amplifier, and a switching circuit responsive to mutual mode control signals for a controlling signal supplied from a capacitive touch matrix to the capacitive to voltage converter in a mutual capacitance sensing mode and responsive to self mode control signals for controlling signals supplied from the capacitive touch matrix to the capacitance-to-voltage converter in a self capacitance sensing mode, wherein the capacitance sensing circuit is configurable for operation in the mutual capacitance sensing mode or the self capacitance sensing mode.
Abstract translation: 提供电容感测电路和方法。 双模电容感测电路包括具有放大器和耦合在放大器的输出和反相输入端之间的积分电容器的电容 - 电压转换器，以及响应于从模拟信号提供的控制信号的相互模式控制信号的开关电路 电容式触摸矩阵到互电容感测模式中的电容到电压转换器，并且响应于用于在自电容感测模式中控制从电容式触摸矩阵提供给电容 - 电压转换器的信号的自模式控制信号，其中电容感测 电路可配置为在互电容感测模式或自身电容感测模式下工作。
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37.发明授权Method, circuit, and system for hover and gesture detection with a touch screen 有权使用触摸屏进行悬停和手势检测的方法，电路和系统公开(公告)号：US09367169B2
公开(公告)日：2016-06-14
申请号：US14231408
申请日：2014-03-31
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Kien Beng Tan
IPC: G06F3/041 , G06F3/0488
CPC classification number: G06F3/0416 , G06F1/1694 , G06F3/0488 , G06F3/04883 , G06F2203/04108
Abstract: According to one embodiment of the present disclosure, a touch controller is adapted to be coupled to a touch screen and to a motion sensor. The touch controller is operable in response to a signal from the motion sensor indicating a first motion to switch from a hover event sensing mode of operation to a gesture event sensing mode of operation. In one embodiment, the touch controller is operable in the hover event sensing mode of operation to detect a first hover event and is thereafter operable, in response to the signal from the motion sensor indicating a first motion has occurred, to switch to the gesture event sensing mode of operation and detect a first gesture event.
Abstract translation: 根据本公开的一个实施例，触摸控制器适于耦合到触摸屏和运动传感器。 触摸控制器可操作以响应于来自运动传感器的信号，指示从悬停事件感测操作模式切换到手势事件感测操作模式的第一运动。 在一个实施例中，触摸控制器可操作在悬停事件感测操作模式中，以检测第一悬停事件，此后可响应于来自运动传感器的指示已经发生第一动作的信号而切换到手势事件 感测操作模式并且检测第一手势事件。
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公开(公告)号：US20160124541A1
公开(公告)日：2016-05-05
申请号：US14531631
申请日：2014-11-03
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Chee Weng Cheong , Dianbo Guo , Kien Beng Tan , Yannick Guedon
CPC classification number: G06F3/044 , G06F3/041 , G06F3/0418
Abstract: A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.
Abstract translation: 电容放电电路包括具有电容的线路，包括电容器的开关电容器电路，耦合到线路的开关电路以及耦合在开关电容器电路和开关电路之间的电压调节器。 控制器将开关电容器电路和开关电路在第一相中进行操作，通过在公共模式和电源之间耦合电容器对电容器进行充电，而在第二阶段，通过将电压调节器与 电源节点之间的电容器接地。 控制器还被配置为在第三阶段中，通过在公共模式和电源之间耦合电容器来对电容器进行充电，并且在第四阶段中，通过将电压调节器和电容器之间的耦合来在线路和电容器之间共享电荷 线与地之间的系列。
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公开(公告)号：US20150286297A1
公开(公告)日：2015-10-08
申请号：US14245915
申请日：2014-04-04
Applicant: STMicroelectronics Asia Pacific Pte. Ltd.
Inventor： CheeWeng Cheong , Leonard Dinu , Dianbo Guo , Kien Beng Tan
IPC: G06F3/0354 , G06F3/041
CPC classification number: G06F3/0418
Abstract: A touch screen device having a touch screen panel and a method for operating a touch screen device are provided. The method includes monitoring, during a noise monitoring phase, channel signals of a first set of channels and a second set of channel of the touch screen panel, detecting a stylus signal in response to a channel signal greater than a stylus threshold and less than a palm threshold, selecting the first set of channels when the stylus signal is detected on at least one channel of the first set of channels and is not detected on the second set of channels, and selecting the second set of channels when the stylus signal is detected on at least one channel of the second set of channels and is not detected on the first set of channels.
Abstract translation: 提供了一种具有触摸屏面板的触摸屏设备和用于操作触摸屏设备的方法。 该方法包括在噪声监测阶段期间监测第一组通道的通道信号和触摸屏面板的第二组通道，响应于大于触针阈值的通道信号检测触针信号，并小于一个 手掌阈值，当在第一组信道的至少一个信道上检测到触笔信号时选择第一组信道，并且在第二组信道上未检测到第一组信道，并且当检测到触笔信号时选择第二组信道 在第二组信道的至少一个信道上，并且在第一组信道上未检测到。
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