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1. 发明申请

US20110025634A1 DETECTION OF LOW NOISE FREQUENCIES FOR MULTIPLE FREQUENCY SENSOR PANEL STIMULATION 有权
标题翻译：检测多个频率传感器面板刺激的低噪声频率
公开(公告)号：US20110025634A1
公开(公告)日：2011-02-03
申请号：US12904012
申请日：2010-10-13
申请人： Christoph Horst KRAH , Steve Porter Hotelling , Sean Erik O'Connor , Wayne Carl Westerman
发明人： Christoph Horst KRAH , Steve Porter Hotelling , Sean Erik O'Connor , Wayne Carl Westerman
IPC分类号： G06F3/041 , H04M1/03
CPC分类号： G06F3/0412 , G02F1/13338 , G06F3/0418 , G06F3/044
摘要： The identification of low noise stimulation frequencies for detecting and localizing touch events on a touch sensor panel is disclosed. Each of a plurality of sense channels can be coupled to a separate sense line in a touch sensor panel and can have multiple mixers, each mixer using a demodulation frequency of a particular frequency, phase and delay. With no stimulation signal applied to any drive lines in the touch sensor panel, pairs of mixers can demodulate the sum of the output of all sense channels using the in-phase (I) and quadrature (Q) signals of a particular frequency. The demodulated outputs of each mixer pair can be used to calculate the magnitude of the noise at that particular frequency, wherein the lower the magnitude, the lower the noise at that frequency. Several low noise frequencies can be selected for use in a subsequent touch sensor panel scan function.
摘要翻译：公开了用于检测和定位触摸传感器面板上的触摸事件的低噪声刺激频率的识别。多个感测通道中的每一个可以耦合到触摸传感器面板中的单独的感测线，并且可以具有多个混频器，每个混频器使用特定频率，相位和延迟的解调频率。在没有刺激信号施加到触摸传感器面板中的任何驱动线路的情况下，成对的混频器可以使用特定频率的同相（I）和正交（Q）信号来解调所有感测通道的输出之和。每个混频器对的解调输出可用于计算该特定频率处的噪声幅度，其中幅度越小，该频率处的噪声越低。可以选择几种低噪声频率用于随后的触摸传感器面板扫描功能。

2. 发明申请

US20090189867A1 Auto Scanning for Multiple Frequency Stimulation Multi-Touch Sensor Panels 审中-公开
标题翻译：自动扫描多频刺激多点传感器面板
公开(公告)号：US20090189867A1
公开(公告)日：2009-07-30
申请号：US12022572
申请日：2008-01-30
申请人： Christoph Horst KRAH , Steve Porter Hotelling
发明人： Christoph Horst KRAH , Steve Porter Hotelling
IPC分类号： G06F3/041
CPC分类号： G06F3/044
摘要： The use of multiple stimulation frequencies and phases is disclosed to detect touch events on a touch sensor panel in a low-power state. Simultaneously during every frame, a number of rows of the touch sensor panel can be driven with a positive phase of one or more stimulation signals, and the same number of different rows can be driven with the anti-phase of those same stimulation signals. Because the same number of rows are stimulated with the in-phase and anti-phase components of the one or more stimulation signals, the resulting charges injected into a given column cancel each other out. However, a touch event will create an imbalance, and a non-zero charge will be detected. The detection of the touch event can then trigger the system to wake up, activate a panel processor, and perform a full panel scan, where the location of the touch event can be identified.
摘要翻译：公开了使用多个刺激频率和相位以在低功率状态下检测触摸传感器面板上的触摸事件。同时在每个帧期间，可以用一个或多个刺激信号的正相驱动多个触摸传感器面板的行，并且可以用相同刺激信号的反相来驱动相同数量的不同行。因为相同数量的行被一个或多个刺激信号的同相和反相分量刺激，所以注入给定列的所得电荷彼此抵消。然而，触摸事件将产生不平衡，并且将检测到非零电荷。然后，触摸事件的检测可以触发系统唤醒，激活面板处理器，并执行全面板扫描，触摸事件的位置可以被识别。

3. 发明申请

US20110273402A1 SAR ADC WITH DYNAMIC INPUT SCALING AND OFFSET ADJUSTMENT 审中-公开
标题翻译：具有动态输入放大和偏移调整的SAR ADC
公开(公告)号：US20110273402A1
公开(公告)日：2011-11-10
申请号：US13187433
申请日：2011-07-20
申请人： Steve Porter HOTELLING , Christoph Horst KRAH
发明人： Steve Porter HOTELLING , Christoph Horst KRAH
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0416 , G06F3/05 , G06F2203/04106
摘要： An apparatus for generating an image of touch on or about a touch-sensitive surface comprising a touch panel is disclosed. The touch panel can include a plurality of touch sensors configured for detecting one or more touch events occurring at distinct locations at about the same time. Each touch event can comprise a touching of an object against the touch-sensitive surface. A plurality of receive channels can be coupled to the touch panel for generating values representative of detected touch events. The receive channels can include a charge redistribution successive approximation register digital-to-analog converter (SAR ADC) configured to convert an analog waveform into a digital representation via a binary search and outputting the digital representation to an output register. The SAR ADC architecture can be such that it the dynamic input range can be scaled and offset adjusted.
摘要翻译：公开了一种用于在包括触摸面板的触敏表面上或周围产生触摸图像的装置。触摸面板可以包括多个触摸传感器，其被配置用于在大约相同的时间检测在不同位置发生的一个或多个触摸事件。每个触摸事件可以包括对触摸敏感表面的物体的触摸。可以将多个接收通道耦合到触摸面板，以产生表示检测到的触摸事件的值。接收通道可以包括电荷再分配逐次逼近寄存器数模转换器（SAR ADC），其经配置以通过二进制搜索将模拟波形转换为数字表示，并将数字表示输出到输出寄存器。 SAR ADC架构可以使其动态输入范围可以进行缩放和偏移调整。

4. 发明申请

US20110061947A1 Power Management for Touch Controller 有权
标题翻译：触摸控制器电源管理
公开(公告)号：US20110061947A1
公开(公告)日：2011-03-17
申请号：US12557962
申请日：2009-09-11
申请人： Christoph Horst KRAH , Thomas James Wilson
发明人： Christoph Horst KRAH , Thomas James Wilson
IPC分类号： G08C21/00 , G06F1/00
CPC分类号： G06F1/3287 , G06F1/3215 , G06F1/3262 , G06F1/3296 , G06F3/041 , G06F3/0416 , Y02D50/20
摘要： Power management for a touch controller is disclosed. The touch controller can include a transmit section for transmitting stimulation signals to an associated touch sensor panel to drive the panel, where the touch controller can selectively adjust the transmit section to reduce power during the transmission. The touch controller can also include a receive section for receiving touch signals resulting from the driving of the panel, where the touch controller can selectively adjust the receive section to reduce power during the receipt of the touch signals. The touch controller can also include a demodulation section for demodulating the received touch signals to obtain touch event results, where the touch controller can selectively adjust the demodulation section to reduce power during the demodulation of the touch signals. The touch controller can also selectively reduce power below present low levels during idle periods. The touch controller can be incorporated into a touch sensitive device.
摘要翻译：公开了触摸控制器的电源管理。触摸控制器可以包括用于将刺激信号发送到相关联的触摸传感器面板以驱动面板的发送部分，其中触摸控制器可以选择性地调整发送部分以减少传输期间的功率。触摸控制器还可以包括用于接收由面板驱动产生的触摸信号的接收部分，其中触摸控制器可以选择性地调整接收部分以在接收触摸信号期间降低功率。触摸控制器还可以包括用于解调接收到的触摸信号以获得触摸事件结果的解调部分，其中触摸控制器可以选择性地调整解调部分以在解调触摸信号期间降低功率。触摸控制器还可以在空闲时段期间选择性地降低低于当前低电平的功率。触摸控制器可以结合到触敏设备中。

5. 发明申请

US20140028635A1 MODULAR STYLUS DEVICE 审中-公开
标题翻译：模块式装置
公开(公告)号：US20140028635A1
公开(公告)日：2014-01-30
申请号：US13560960
申请日：2012-07-27
申请人： Christoph Horst KRAH
发明人： Christoph Horst KRAH
IPC分类号： G06F3/033
CPC分类号： G06F3/041 , G06F3/03545
摘要： Modular styluses having a base module an expansion module are disclosed. The base module can include a stylus tip, a stylus stimulation signal circuit capable of generating a stimulation signal, a processor for controlling the stylus stimulation signal circuit, and a connection interface for selectively connecting the base module to an expansion module. The expansion module can include a power source for providing power to the stylus stimulation signal circuit and the processor. The expansion module can also include one or more of a power source, camera, audio recorder, communication circuit, gyroscope, accelerometer, laser pointer, projector, or the like. The projector can be used to display an image on a surface and to allow a user to edit a document by moving the stylus across the projected image.
摘要翻译：公开了具有基座模块和扩展模块的模块化笔迹。基座模块可以包括触针尖，能够产生刺激信号的触针刺激信号电路，用于控制触针刺激信号电路的处理器，以及用于选择性地将基本模块连接到扩展模块的连接接口。扩展模块可以包括用于向触针刺激信号电路和处理器提供电力的电源。扩展模块还可以包括电源，照相机，音频记录器，通信电路，陀螺仪，加速度计，激光指示器，投影仪等中的一个或多个。该投影仪可用于在表面上显示图像，并允许用户通过在拍摄图像上移动触笔来编辑文档。

6. 发明申请

US20130207906A1 QUADRATURE DEMODULATION FOR TOUCH SENSITIVE DEVICES 有权
标题翻译：触觉敏感器件的平衡解调
公开(公告)号：US20130207906A1
公开(公告)日：2013-08-15
申请号：US13397643
申请日：2012-02-15
申请人： Marduke YOUSEFPOR , Kevin J. WHITE , Christoph Horst KRAH
发明人： Marduke YOUSEFPOR , Kevin J. WHITE , Christoph Horst KRAH
IPC分类号： G06F3/041
CPC分类号： G06F3/0418 , G06F3/044 , H03D2200/0029
摘要： Demodulation circuits and processes for demodulating touch signals from a touch sensor using the demodulation circuits are provided. The demodulation circuits can include circuitry configured to determine an adjustable phase delay based at least in part on a quadrature component of the touch signal or the phase-adjusted touch signal. The demodulation circuit can further include circuitry for applying the adjustable phase delay to the touch signal to compensate for phase delays in the touch signal caused by the touch sensor and/or other components. The demodulation circuit can dynamically change the adjustable phase delay to compensate for time-varying phase delays caused by the touch sensor and/or other components.
摘要翻译：提供了使用解调电路解调来自触摸传感器的触摸信号的解调电路和处理。解调电路可以包括被配置为至少部分地基于触摸信号的正交分量或相位调整的触摸信号来确定可调节的相位延迟的电路。解调电路还可以包括用于将可调相位延迟施加到触摸信号以补偿由触摸传感器和/或其它部件引起的触摸信号中的相位延迟的电路。解调电路可以动态地改变可调相位延迟，以补偿由触摸传感器和/或其他部件引起的时变相位延迟。

7. 发明申请

US20130069904A1 NOISE REJECTION CIRCUIT FOR TOUCH SENSITIVE DISPLAY 有权
标题翻译：用于触摸敏感显示器的噪声抑制电路
公开(公告)号：US20130069904A1
公开(公告)日：2013-03-21
申请号：US13234082
申请日：2011-09-15
申请人： Christoph Horst KRAH
发明人： Christoph Horst KRAH
IPC分类号： G06F3/045 , H03K17/16 , H03K5/1252
CPC分类号： G06F3/0418 , G06F3/044 , H03K2217/960705
摘要： A noise rejection circuit for a touch sensitive display is disclosed. The noise rejection circuit can reject noise introduced by the touch sensitive display's display device into its touch panel. The noise rejection circuit can be integrated into the touch circuitry of the touch sensitive display and can include a resistor to sense the noise and an amplifier to isolate the sensed noise for rejection.
摘要翻译：公开了一种用于触感显示器的噪声抑制电路。噪声抑制电路可以将触敏显示器的显示装置引入的噪声抑制到其触摸面板中。噪声抑制电路可以集成到触敏显示器的触摸电路中，并且可以包括用于感测噪声的电阻器和放大器以隔离所感测的噪声以进行拒绝。

8. 发明申请

US20110063229A1 METHOD TO COMPENSATE FOR THE FREQUENCY DEPENDENCE OF SENSE SIGNAL PREPROCESSING 有权
标题翻译：补偿感知信号预处理的频率依赖性的方法
公开(公告)号：US20110063229A1
公开(公告)日：2011-03-17
申请号：US12558397
申请日：2009-09-11
申请人： Christoph Horst KRAH , Yutaka Hori
发明人： Christoph Horst KRAH , Yutaka Hori
IPC分类号： G06F3/041
CPC分类号： G06F3/044 , G06F3/0418
摘要： Compensating for the frequency dependence of sense signal preprocessing in preprocessing channel circuitry is provided. The frequency dependence of the preprocessing channels can be modified to change a frequency dependent channel into a frequency independent channel, to change a frequency independent channel into a frequency dependent channel, or to change the frequency dependency characteristics of a frequency dependent channel. Modification of frequency dependency may be accomplished, for example, by modifying certain parameters of a preprocessing channel's components, which can include components for amplifying, filtering, phase adjusting, demodulating, decrypting, for example. A pipelined process may be used to modify the frequency dependency of multiple channels. Compensating for frequency dependencies can have multiple advantages, such as reduction of memory requirements and DIE size.
摘要翻译：提供补偿预处理通道电路中感测信号预处理的频率依赖性。可以修改预处理信道的频率依赖性以将频率相关信道改变成与频率无关的信道，以将频率无关信道改变为频率相关信道，或者改变频率相关信道的频率依赖特性。频率依赖性的修改可以例如通过修改预处理信道的分量的某些参数来实现，其可以包括用于放大，滤波，相位调整，解调，解密等的组件。可以使用流水线处理来修改多个信道的频率依赖性。补偿频率相关性可以具有多个优点，例如减少内存要求和DIE大小。

9. 发明申请

US20110061949A1 MEASURING BODY CAPACITANCE EFFECT IN TOUCH SENSITIVE DEVICE 有权
标题翻译：测量敏感器件中的身体电容效应
公开(公告)号：US20110061949A1
公开(公告)日：2011-03-17
申请号：US12558380
申请日：2009-09-11
申请人： Christoph Horst KRAH , Steven Porter Hotelling , Marduke Yousefpor
发明人： Christoph Horst KRAH , Steven Porter Hotelling , Marduke Yousefpor
IPC分类号： G08C21/00
CPC分类号： G06F3/0418 , G02F1/13338 , G06F3/044 , G06F2203/04104 , H03K17/962 , H03K2217/960705
摘要： Measuring an effect of body capacitance in a touch sensitive device is disclosed. This effect can be caused by poor grounding of a user or other objects touching the device or of the device itself. The device can operate in a stray capacitance mode to measure a body capacitance effect and in a normal mode to detect a touch on the device. During the stray capacitance mode, the device can obtain a body capacitance measurement from the device. During the normal mode, the device can obtain a touch measurement from the device. The device can calculate a body capacitance factor based on a ratio between the body capacitance measurement and the touch measurement and use the body capacitance factor to compensate for erroneous or distorted touch output values from the device. Various components of the device can be switchably configured according to the particular mode.
摘要翻译：公开了测量触敏装置中的身体电容的影响。这种效果可能是由于接触设备或设备本身的用户或其他对象的接地不良引起的。器件可以在杂散电容模式下工作，以测量体电容效应，并在正常模式下检测器件上的触摸。在杂散电容模式期间，器件可以从器件获得体电容测量值。在正常模式下，设备可以从设备获得触摸测量。该装置可以基于身体电容测量和触摸测量之间的比率来计算身体电容因数，并使用身体电容因子来补偿来自装置的错误或失真的触摸输出值。可以根据特定模式切换配置设备的各种组件。

10. 发明申请

US20130076648A1 POWER MANAGEMENT FOR INTEGRATED TOUCH SCREENS 有权
标题翻译：集成触摸屏电源管理
公开(公告)号：US20130076648A1
公开(公告)日：2013-03-28
申请号：US13244072
申请日：2011-09-23
申请人： Christoph Horst KRAH , Kevin J. White , Yafei Bi
发明人： Christoph Horst KRAH , Kevin J. White , Yafei Bi
IPC分类号： G06F3/041
CPC分类号： G06F3/0412 , G06F3/0418 , G06F3/044
摘要： Reducing or eliminating the effects of noise that can be generated by a power system of a touch screen device, such as a gate line voltage system that applies voltage to gate lines of the touch screen, is provided. In one example, a power supply, such as a charge pump, can be disabled during active touch sensing, such that noise from the charge pump is not generated during touch sensing. In some examples, a voltage regulator can help to maintain the gate voltage level at or above a desired threshold. In some cases, noise entering the touch sensing system can have a lasting effect on noise-sensitive components, even after the noise source is disabled. In these cases, a post-noise stabilizing system can be included to stabilize, reset, etc., noise-sensitive components of the touch sensing system, which can help to reduce or eliminate the lasting effect of noise.
摘要翻译：提供了减少或消除由触摸屏装置的电力系统产生的噪声的影响，诸如对触摸屏的栅极线施加电压的栅极线电压系统。在一个示例中，可以在主动触摸感测期间禁用诸如电荷泵的电源，使得在触摸感测期间不产生来自电荷泵的噪声。在一些示例中，电压调节器可以帮助将栅极电压电平维持在等于或高于所需阈值。在某些情况下，甚至在噪声源被禁用之后，进入触摸感应系统的噪声也会对噪声敏感元件产生持久的影响。在这些情况下，可以包括一个噪声后稳定系统来稳定，复位等触摸感应系统的噪声敏感部件，这有助于减少或消除噪音的持久影响。

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