公开(公告)号：US20150256329A1

公开(公告)日：2015-09-10

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

IPC: H04L7/033 ,  G06F3/0354 ,  H04L7/00 ,  G06F3/041

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.

Abstract translation: 一种用于同步彼此通信的两个设备的系统和方法。 当要建立两个设备之间的通信时，可以调用同步过程。 在一个实施例中，第一设备可以启动发送具有上升沿和下降沿对的同步信号。 第二设备可以包括被配置为接收同步信号的控制器。 然而，噪声可能会阻碍控制器正确接收和/或解释同步信号的能力。 噪声可能导致检测部件误检测噪声作为同步信号，或者可能导致检测部件错过实际同步信号的检测。 可以使用窗口生成器来生成用于控制器的比较窗口以检测同步信号。 此外，可以基于先前检测到的（或未检测到的）同步信号来调整检测窗口持续时间和开始时间，以便补偿遮挡同步信号的噪声。

公开(公告)号：US20160146874A1

公开(公告)日：2016-05-26

申请号：US14550415

申请日：2014-11-21

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Dianbo GUO ,  EngJye NG ,  Abhishek SINGH

IPC: G01R31/02 ,  G01R31/28

CPC classification number: G01R31/025 ,  G01R31/024 ,  G01R31/08 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04111

Abstract: A microelectronic short circuit detection module is disclosed that locates and distinguishes among different types of short circuits in touch screen panels. Individual short circuit detection circuits are coupled to force and sense lines throughout a wire matrix within the touch screen. If the line is shorted to a neighboring line or any other line carrying an opposite logic state, its logic state will be corrupted by the short and will be held at a value opposite that of the intended input signal. Comparing the input and the output therefore provides an indicator of a short circuit to another force or sense line in the wire matrix. A pair of pull up/down stages is engaged to detect whether the short is coupled to power or ground. A threshold resistor can be varied to adjust detection sensitivity. By conducting a serial test, matrix coordinates of the short circuit can be identified.

Abstract translation: 公开了一种微电子短路检测模块，其定位和区分触摸屏面板中的不同类型的短路。 单独的短路检测电路被耦合以在触摸屏内的整个线矩阵中强制和感测线。 如果线路短路到相邻线路或承载相反逻辑状态的任何其他线路，其逻辑状态将被短路损坏，并将保持在与预期输入信号相反的值。 因此，输入和输出的比较提供了与线阵中的另一个力或感测线短路的指示符。 一对上拉/下降级被接合以检测短路是否耦合到电源或接地。 可以改变阈值电阻来调整检测灵敏度。 通过串行测试，可以识别短路的矩阵坐标。

公开(公告)号：US20180232071A1

公开(公告)日：2018-08-16

申请号：US15953017

申请日：2018-04-13

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Chee Weng CHEONG ,  Leonard Liviu DINU ,  Dianbo GUO ,  Kien Beng TAN

IPC: G06F3/0354 ,  G06F3/041 ,  G06F3/038 ,  H04L27/00

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.

公开(公告)号：US20150324023A1

公开(公告)日：2015-11-12

申请号：US14272455

申请日：2014-05-07

Applicant: STMicroelectronics Asia Pacific PTE LTD

Inventor： Dianbo GUO ,  Praveesh CHANDRAN ,  Lokesh Kumar KORAPATI

IPC: G06F3/041

CPC classification number: A61B17/22022 ,  A61B18/245 ,  A61B18/26 ,  A61B2017/22051 ,  A61B2017/22079 ,  A61H23/008 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04108

Abstract: A touch panel includes a plurality of drive lines, a plurality of orthogonal sense lines, and a plurality of sensors. A method of controlling the touch panel to detect touches includes simultaneously applying a drive signal to each of a group of drive lines of the touch panel. Each of the drive signals is applied to a corresponding drive line in the group during a time slot and all the applied drive signals having the same electrical characteristics over the time slot. The method includes sensing sense signals generated on the sense lines in response to the applied drive signals and processing the sense signals to detect touches of the touch panel.

Abstract translation: 触摸面板包括多个驱动线，多个正交感测线和多个传感器。 控制触摸面板以检测触摸的方法包括同时对驱动信号施加到触摸面板的一组驱动线路中的每一个。 每个驱动信号在时隙期间被施加到组中的相应驱动线，并且所有所施加的驱动信号在时隙上具有相同的电特性。 该方法包括响应于所施加的驱动信号感测在感测线上产生的感测信号，并且处理感测信号以检测触摸面板的触摸。