公开(公告)号：US09846665B2

公开(公告)日：2017-12-19

申请号：US14534091

申请日：2014-11-05

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Chaochao Zhang ,  Chee Weng Cheong ,  Dianbo Guo

IPC: G06F13/364 ,  G06F5/06 ,  G06F13/42

CPC classification number: G06F13/364 ,  G06F5/065 ,  G06F13/4282 ,  G06F2205/067

Abstract: A master-slave circuit is disclosed that maintains synchronization between two integrated circuit chips, using minimal chip resources. In one embodiment, a single, bidirectional communication path is shared by the two chips. Meanwhile, only one I/O port on each chip is used to send and receive signals via the bidirectional communication path. The first chip to detect a signal event is designated the master and controls the bidirectional communication path. The master can communicate the status to the other chip by controlling the logic state of the I/O ports. When the second chip detects that the I/O port is controlled by the first chip, the second chip will logically deduce that it is now the slave. If both chips detect the signal event at substantially the same time, one of the two chips is pre-programmed to assume control of the I/O port as the master.

公开(公告)号：US09703946B2

公开(公告)日：2017-07-11

申请号：US14231360

申请日：2014-03-31

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

Inventor： Praveesh Chandran ,  Ravi Bhatia

IPC: H04L29/06 ,  G06F21/44 ,  G06F3/041 ,  G09G5/12

CPC classification number: G06F21/44 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/0416 ,  G06F21/445 ,  G06F2203/0384 ,  G09G5/12 ,  G09G2354/00

Abstract: A method of pairing an intelligent input device with an electronic device includes transmitting a start pairing identifier and receiving a unique identifier that identifies the intelligent input device. The method further includes authenticating the unique identifier using authentication information stored in the electronic device and transmitting a pairing successful identifier responsive to the unique identifier being authenticated to thereby pair the intelligent input device and the electronic device.

公开(公告)号：US09671910B2

公开(公告)日：2017-06-06

申请号：US14522098

申请日：2014-10-23

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Leonard Dinu ,  Chao Chao Zhang ,  Dianbo Guo ,  Chee Weng Cheong ,  Eng Jye Ng

IPC: G06F3/038 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F3/038 ,  G06F3/0416 ,  G06F2203/04104 ,  G06F2203/04106

Abstract: An electronic device may include a first controller associated with some channels of a digitizer having channels configured to receive a signal from a stylus, and with each channel having a direction. A second controller may be associated with channels of the digitizer not associated with the first controller. The first controller may scan for the signal at each channel associated with the first controller, and based on acquisition of the signal at a given channel associated with the first controller, calculate a property of the signal. The first controller may send the calculated property and the direction of the given channel to the second controller. The first controller and the second controller may scan for the signal at each channel having the direction of the given channel, at acquisition intervals based upon the calculated property.

公开(公告)号：US20170075469A1

公开(公告)日：2017-03-16

申请号：US14852847

申请日：2015-09-14

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Praveesh Chandran ,  Gee Heng Loh ,  Ravi Bhatia ,  Ys On

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F2203/04108

Abstract: Disclosed is a touch sensor and method for detecting a touch in a capacitive touchscreen application, wherein the touch sensor is capable of distinguishing between a finger hovering above the touch sensor and a touch from a stylus having a small contact surface area without having to adjust the sensitivity of the touch sensor. The touch sensor includes a first sensing electrode, a transmit electrode, and a second sensing electrode, wherein the second sensing electrode is positioned substantially around the perimeter of the inner circuitry (i.e., transmit electrode and first sensing electrode). A touch is detected by sensing changes in a first capacitance between the transmit electrode and first sensing electrode and a second capacitance between the transmit electrode and second sensing electrode. The changes in the first and second capacitances are compared to determine whether the changes in the capacitances are due to a finger hover or a touch.

Abstract translation: 公开了用于检测电容式触摸屏应用中的触摸的触摸传感器和方法，其中触摸传感器能够区分在触摸传感器上方悬停的手指和具有小接触表面积的触针的触摸，而不必调整 触摸传感器的灵敏度。 触摸传感器包括第一感测电极，发射电极和第二感测电极，其中第二感测电极基本上围绕内部电路（即发射电极和第一感测电极）的周边定位。 通过感测发射电极和第一感测电极之间的第一电容的变化以及发射电极和第二感测电极之间的第二电容来检测触摸。 比较第一和第二电容的变化，以确定电容的变化是由于手指悬停还是触摸。

公开(公告)号：US09596106B2

公开(公告)日：2017-03-14

申请号：US14170111

申请日：2014-01-31

Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD. ,  STMICROELECTRONICS, INC.

Inventor： Karthik Muralidhar ,  George A. Vlantis

IPC: H04K1/10 ,  H04L25/03 ,  H04B7/04 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L25/03821 ,  H04B7/0413 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/2601

Abstract: In an embodiment, a transmitter includes a transmission path configurable to generate first pilot clusters in response to a matrix, each first pilot cluster including a respective first pilot subsymbol in a first cluster position and a respective second pilot subsymbol in a second cluster position such that a vector formed by the first pilot subsymbols is orthogonal to a vector formed by the second pilot subsymbols, the matrix having a dimension related to a number of cluster positions in each of the first pilot clusters. For example, where such a transmitter transmits simultaneous orthogonal-frequency-division-multiplexed (OFDM) signals (e.g., MIMO-OFDM signals) over respective channels that may impart inter-carrier interference (ICI) to the signals due to Doppler spread, the pattern of the pilot symbols that compose the pilot clusters may allow a receiver of these signals to estimate the responses of these channels more accurately than conventional receivers.

Abstract translation: 在实施例中，发射机包括可配置为响应于矩阵生成第一导频簇的传输路径，每个第一导频簇包括第一簇位置中的相应第一导频子符号和第二簇位置中的相应第二导频子符号，使得 由第一导频子符号形成的矢量与由第二导频子符号形成的矢量正交，该矩阵具有与每个第一导频簇中的簇的位置数相关的维数。 例如，在这种发射机通过可能由于多普勒扩展而给予信号的载波间干扰（ICI）的相应信道上发射同时正交频分复用（OFDM）信号（例如，MIMO-OFDM信号）的情况下， 构成导频簇的导频符号的模式可以允许这些信号的接收机比常规接收机更准确地估计这些信道的响应。

公开(公告)号：US20170069298A1

公开(公告)日：2017-03-09

申请号：US15354434

申请日：2016-11-17

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Raphael Collado ,  Shivachitta S. Walishetty ,  Ling Yu Cheng

IPC: G09G5/36 ,  G09G5/00 ,  G06T1/20 ,  G06F9/50 ,  G09G5/14

CPC classification number: G09G5/363 ,  G06F3/1423 ,  G06F9/50 ,  G06F9/5011 ,  G06F2209/5011 ,  G06T1/20 ,  G09G5/005 ,  G09G5/14 ,  G09G2360/127 ,  G09G2360/18

Abstract: Resources of multiple systems are managed in a computer device. A first processing system having a set of dedicated resources also has a resource manager to manage at least one of the resources. The first processing system is prevented from directly accessing the resources without authorization. A second processing system, connected to the set of dedicated resources, has a supervisor application to grant control to individual resources to the resource manager of the first processing system. A computer program is executed in the first processing system. The supervisor application grants control of at least one resource to the resource manager of the first processing system in a way that is transparently to the computer program executing in the first processing system.

Abstract translation: 多个系统的资源在计算机设备中进行管理。 具有一组专用资源的第一处理系统还具有资源管理器来管理资源中的至少一个。 防止第一个处理系统在未经授权的情况下直接访问资源。 连接到该专用资源集合的第二处理系统具有向第一处理系统的资源管理器授予对单个资源的控制的管理程序应用程序。 在第一处理系统中执行计算机程序。 主管应用以对第一处理系统中执行的计算机程序透明的方式向第一处理系统的资源管理器授予对至少一个资源的控制。

公开(公告)号：US09529627B2

公开(公告)日：2016-12-27

申请号：US14219835

申请日：2014-03-19

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics Asia Pacific Pte Ltd

Inventor： Raphael Collado ,  Shivachitta S. Walishetty ,  Ling Yu Cheng

IPC: G06F9/46 ,  G06F9/50 ,  G06F3/14 ,  G09G5/14 ,  G09G5/36

CPC classification number: G09G5/363 ,  G06F3/1423 ,  G06F9/50 ,  G06F9/5011 ,  G06F2209/5011 ,  G06T1/20 ,  G09G5/005 ,  G09G5/14 ,  G09G2360/127 ,  G09G2360/18

Abstract: Resources of multiple systems are managed in a computer device. A first processing system having a set of dedicated resources also has a resource manager to manage at least one of the resources. The first processing system is prevented from directly accessing the resources without authorization. A second processing system, connected to the set of dedicated resources, has a supervisor application to grant control to individual resources to the resource manager of the first processing system. A computer program is executed in the first processing system. The supervisor application grants control of at least one resource to the resource manager of the first processing system in a way that is transparently to the computer program executing in the first processing system.

Abstract translation: 多个系统的资源在计算机设备中进行管理。 具有一组专用资源的第一处理系统还具有资源管理器来管理资源中的至少一个。 防止第一个处理系统在未经授权的情况下直接访问资源。 连接到该专用资源集合的第二处理系统具有向第一处理系统的资源管理器授予对单个资源的控制的管理程序应用程序。 在第一处理系统中执行计算机程序。 主管应用以对第一处理系统中执行的计算机程序透明的方式向第一处理系统的资源管理器授予对至少一个资源的控制。

公开(公告)号：US09524697B2

公开(公告)日：2016-12-20

申请号：US14474960

申请日：2014-09-02

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Kusuma Adi Ningrat ,  Giuseppe Noviello ,  Jenn Woei Soo ,  Lokesh Kumar Korapati

IPC: G09G5/12 ,  G06F3/044

CPC classification number: G09G5/12 ,  G06F3/044 ,  G09G2320/0247

Abstract: A video display includes a video display panel and a video display drive circuit configured to control a display on condition. A touch screen includes a touch screen panel (mounted on top of the video display panel) and a touch panel control and sense circuit configured to operate the touch screen panel in a self-capacitance mode. The touch panel control and sense circuit includes sense drive circuits configured to generate sense drive signals for application to sense lines of the touch screen panel. A controller controls actuation of the sense drive circuits so that the sense drive signals are synchronized to the display on condition. In an implementation, the leading edges of the sense drive signals are synchronized to the display on condition. In another implementation, a window is synchronized to the display on condition and the leading edges of the sense drive signals exhibit jitter within the window.

Abstract translation: 视频显示器包括视频显示面板和视频显示驱动电路，视频显示驱动电路被配置为控制显示状态。 触摸屏包括触摸屏面板（安装在视频显示面板的顶部）以及触摸面板控制和感测电路，被配置为以自电容模式操作触摸屏面板。 触摸面板控制和感测电路包括感测驱动电路，其被配置为产生感测驱动信号以用于感测触摸屏面板的线。 控制器控制感测驱动电路的致动，使得感测驱动信号在状态下与显示器同步。 在一个实现中，感测驱动信号的前沿在状态下与显示器同步。 在另一实现中，窗口在条件下与显示器同步，并且感测驱动信号的前沿在窗口内呈现抖动。

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

IPC: G05F3/26 ,  G05F3/16

CPC classification number: G05F3/16 ,  G05F3/262

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。

公开(公告)号：US09523725B2

公开(公告)日：2016-12-20

申请号：US14322244

申请日：2014-07-02

Applicant: STMicroelectronics Asia Pacific Pte Ltd ,  STMicroelectronics S.r.l.

Inventor： Kien Beng Tan ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Yannick Guedon ,  Dianbo Guo ,  Paolo Angelini ,  Giovanni Carlo Tripoli

IPC: G01R27/26 ,  G06F3/044 ,  G06F3/041

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。