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1. 发明授权

US09391607B2 Use of random sampling technique to reduce finger-coupled noise 有权
标题翻译：使用随机采样技术来减少手指耦合噪声
公开(公告)号：US09391607B2
公开(公告)日：2016-07-12
申请号：US12987008
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Patrick Chan , David L. Allen , Natarajan Viswanathan
发明人： Ashutosh Ravindra Joharapurkar , Patrick Chan , David L. Allen , Natarajan Viswanathan
IPC分类号： G06F3/044 , H03K17/96 , G06F3/041
CPC分类号： G06F3/0418 , G06F3/0412 , G06F3/044 , H03K17/96 , H03K17/962 , H03K2217/96062
摘要： Random sampling techniques include techniques for reducing or eliminating errors in the output of capacitive sensor arrays such as touch panels. The channels of the touch panel are periodically sampled to determine the presence of one or more touch events. Each channel is individually sampled in a round robin fashion, referred to as a sampling cycle. During each sampling cycle, all channels are sampled once. Multiple sampling cycles are performed such that each channel is sampled multiple times. Random sampling techniques are used to sample each of the channels. One random sampling technique randomizes a starting channel in each sampling cycle. Another random sampling technique randomizes the selection of all channels in each sampling cycle. Yet another random sampling technique randomizes the sampling cycle delay period between each sampling cycle. Still another random sampling technique randomizes the channel delay period between sampling each channel.
摘要翻译：随机采样技术包括用于减少或消除诸如触摸面板的电容式传感器阵列的输出中的误差的技术。周期性地对触摸面板的通道进行采样，以确定是否存在一个或多个触摸事件。每个通道以循环方式单独采样，称为采样周期。在每个采样周期期间，所有通道都被采样一次。执行多个采样周期，使得每个通道被多次采样。随机采样技术用于对每个通道进行采样。一个随机采样技术将每个采样周期中的起始通道随机化。另一种随机采样技术随机化了每个采样周期中所有信道的选择。另一种随机抽样技术使每个采样周期之间的采样周期延迟周期随机化。另一种随机采样技术使每个通道采样之间的通道延迟周期随机化。

2. 发明申请

US20110261008A1 USE OF RANDOM SAMPLING TECHNIQUE TO REDUCE FINGER-COUPLED NOISE 有权
标题翻译：使用随机采样技术来减少手指耦合噪声
公开(公告)号：US20110261008A1
公开(公告)日：2011-10-27
申请号：US12987008
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Patrick Chan , David L. Allen , Natarajan Viswanathan
发明人： Ashutosh Ravindra Joharapurkar , Patrick Chan , David L. Allen , Natarajan Viswanathan
IPC分类号： G06F3/045
CPC分类号： G06F3/0418 , G06F3/0412 , G06F3/044 , H03K17/96 , H03K17/962 , H03K2217/96062
摘要： Random sampling techniques include techniques for reducing or eliminating errors in the output of capacitive sensor arrays such as touch panels. The channels of the touch panel are periodically sampled to determine the presence of one or more touch events. Each channel is individually sampled in a round robin fashion, referred to as a sampling cycle. During each sampling cycle, all channels are sampled once. Multiple sampling cycles are performed such that each channel is sampled multiple times. Random sampling techniques are used to sample each of the channels. One random sampling technique randomizes a starting channel in each sampling cycle. Another random sampling technique randomizes the selection of all channels in each sampling cycle. Yet another random sampling technique randomizes the sampling cycle delay period between each sampling cycle. Still another random sampling technique randomizes the channel delay period between sampling each channel.
摘要翻译：随机采样技术包括用于减少或消除诸如触摸面板的电容式传感器阵列的输出中的误差的技术。周期性地对触摸面板的通道进行采样，以确定是否存在一个或多个触摸事件。每个通道以循环方式单独采样，称为采样周期。在每个采样周期期间，所有通道都被采样一次。执行多个采样周期，使得每个通道被多次采样。随机采样技术用于对每个通道进行采样。一个随机采样技术将每个采样周期中的起始通道随机化。另一种随机采样技术随机化了每个采样周期中所有信道的选择。另一种随机抽样技术使每个采样周期之间的采样周期延迟周期随机化。另一种随机采样技术使每个通道采样之间的通道延迟周期随机化。

3. 发明申请

US20110261007A1 NOISE CANCELLATION TECHNIQUE FOR CAPACITIVE TOUCHSCREEN CONTROLLER USING DIFFERENTIAL SENSING 有权
标题翻译：使用差分感测的电容式触控控制器的噪声消除技术
公开(公告)号：US20110261007A1
公开(公告)日：2011-10-27
申请号：US12986881
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Jean CauXuan Le , Natarajan Viswanathan , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Jean CauXuan Le , Natarajan Viswanathan , Patrick Chan
IPC分类号： G06F3/045
CPC分类号： G06F3/0418 , G06F3/0416 , G06F3/044 , H03K17/96 , H03K2217/96062
摘要： A differential sensing scheme provides a means for detecting one or more touch events on a touch sensitive device in the presence of incident noise. Instead of sensing one touch sensitive channel, such as a row, column, or single touch sensor, multiple touch sensitive channels are sampled at a time. By sampling two nearby channels simultaneously and doing the measurement differentially, noise common to both channels is cancelled. The differential sensing scheme is implemented using simple switch-capacitor AFE circuitry. The originally sensed data on each individual channel is recovered free of common-mode noise. The recovered sensed data is used to determine the presence of one or more touch events and if present the location of each touch event on the touch sensitive device.
摘要翻译：差分感测方案提供了用于在存在入射噪声的情况下检测触敏装置上的一个或多个触摸事件的装置。代替检测一个触敏通道（例如行，列或单触摸传感器），一次对多个触摸敏感通道进行采样。通过同时采样两个附近的通道并进行差分测量，两个通道共同的噪声被取消。差分感测方案采用简单的开关电容AFE电路实现。每个独立通道上的原始感测数据被恢复，没有共模噪声。恢复的感测数据用于确定一个或多个触摸事件的存在，并且如果存在触摸敏感设备上的每个触摸事件的位置。

4. 发明授权

US08493356B2 Noise cancellation technique for capacitive touchscreen controller using differential sensing 有权
标题翻译：使用差分感测的电容式触摸屏控制器的噪声消除技术
公开(公告)号：US08493356B2
公开(公告)日：2013-07-23
申请号：US12986881
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Jean CauXuan Le , Natarajan Viswanathan , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Jean CauXuan Le , Natarajan Viswanathan , Patrick Chan
IPC分类号： G06F3/045
CPC分类号： G06F3/0418 , G06F3/0416 , G06F3/044 , H03K17/96 , H03K2217/96062
摘要： A differential sensing scheme provides a means for detecting one or more touch events on a touch sensitive device in the presence of incident noise. Instead of sensing one touch sensitive channel, such as a row, column, or single touch sensor, multiple touch sensitive channels are sampled at a time. By sampling two nearby channels simultaneously and doing the measurement differentially, noise common to both channels is cancelled. The differential sensing scheme is implemented using simple switch-capacitor AFE circuitry. The originally sensed data on each individual channel is recovered free of common-mode noise. The recovered sensed data is used to determine the presence of one or more touch events and if present the location of each touch event on the touch sensitive device.
摘要翻译：差分感测方案提供了用于在存在入射噪声的情况下检测触敏装置上的一个或多个触摸事件的装置。代替检测一个触敏通道（例如行，列或单触摸传感器），一次对多个触摸敏感通道进行采样。通过同时采样两个附近的通道并进行差分测量，两个通道共同的噪声被取消。差分感测方案采用简单的开关电容AFE电路实现。每个独立通道上的原始感测数据被恢复而不存在共模噪声。恢复的感测数据用于确定一个或多个触摸事件的存在，并且如果存在触摸敏感设备上的每个触摸事件的位置。

5. 发明授权

US08624870B2 System for and method of transferring charge to convert capacitance to voltage for touchscreen controllers 有权
标题翻译：用于将电荷转换为触摸屏控制器的电容的系统和方法
公开(公告)号：US08624870B2
公开(公告)日：2014-01-07
申请号：US12986841
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Karthikeya Kodur , Venugopal Reddy , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Karthikeya Kodur , Venugopal Reddy , Patrick Chan
IPC分类号： G06F3/045
CPC分类号： H03K17/96 , G06F3/0416 , G06F3/044 , G06F2203/04104 , H03K2217/96062
摘要： A touchscreen controller system determines the actual locations of multiple simultaneous touches by eliminating mutual capacitance between adjacent rows and columns during self-capacitance measurements and selectively enabling mutual capacitance during mutual capacitance measurements. During the self-capacitance measurements, the controller system generates a set of candidate touch locations, which includes the locations of real and ghost touches. During the mutual capacitance measurements, only the locations in the candidate set are measured and, from these measurements, the actual touch locations are determined. By limiting the mutual capacitive measurements to only a small subset of the locations over the entire touch panel, real touch locations are determined on a linear order. Also, by using on-chip integration capacitors, embodiments of the invention are able to perform each measurement in a single cycle.
摘要翻译：触摸屏控制器系统通过在自电容测量期间消除相邻行和列之间的互电容来确定多个同时触摸的实际位置，并且在互电容测量期间选择性地实现互电容。在自电容测量期间，控制器系统产生一组候选触摸位置，其包括实际和重影触摸的位置。在互电容测量期间，仅测量候选组中的位置，并且从这些测量中确定实际的触摸位置。通过将互电容测量限制在整个触摸面板上的仅一小部分位置，实际触摸位置以线性顺序确定。此外，通过使用片上集成电容器，本发明的实施例能够在单个周期中执行每个测量。

6. 发明授权

US08599167B2 Method and apparatus for improving dynamic range of a touchscreen controller 有权
标题翻译：用于改善触摸屏控制器的动态范围的方法和装置
公开(公告)号：US08599167B2
公开(公告)日：2013-12-03
申请号：US12986776
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Patrick Chan
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0418 , H03K17/9622 , H03K2217/96062
摘要： A touchscreen system for increasing the dynamic range of the system comprising a touchscreen coupled to an offset cancellation element and a capacitance measuring element. The offset cancellation element is configured to be dynamically changed in capacitance such that it offsets parasitic and sensor capacitances of the touchscreen sensors thereby leaving only touch event capacitance to be measured by the measuring element. The offset cancellation element is able to adjust to the initial unwanted capacitances of each sensor as well as dynamically adjust to changes in the unwanted capacitance due to the environment. In some embodiments, the offset cancellation element is a capacitance digital-to-analog converter that is controlled by a controller for offsetting the unwanted capacitance. As a result, the touchscreen system is able to utilize a small integrating capacitor thereby lowering cost and improving the dynamic range of the system.
摘要翻译：一种用于增加系统的动态范围的触摸屏系统，包括耦合到偏移抵消元件和电容测量元件的触摸屏。偏移消除元件被配置为动态地改变电容，使得它抵消触摸屏传感器的寄生和传感器电容，从而仅留下测量元件测量的触摸事件电容。偏移消除元件能够调整到每个传感器的初始不需要的电容，并且由于环境而动态地调整到不想要的电容的变化。在一些实施例中，偏移抵消元件是由控制器控制以抵消不想要的电容的电容数模转换器。因此，触摸屏系统能够利用小的积分电容器，从而降低成本并改善系统的动态范围。

7. 发明申请

US20110261005A1 METHOD AND APPARATUS FOR IMPROVING DYNAMIC RANGE OF A TOUCHSCREEN CONTROLLER 有权
标题翻译：改进触控控制器的动态范围的方法和装置
公开(公告)号：US20110261005A1
公开(公告)日：2011-10-27
申请号：US12986776
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Patrick Chan
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/0418 , H03K17/9622 , H03K2217/96062
摘要： A touchscreen system for increasing the dynamic range of the system comprising a touchscreen coupled to an offset cancellation element and a capacitance measuring element. The offset cancellation element is configured to be dynamically changed in capacitance such that it offsets parasitic and sensor capacitances of the touchscreen sensors thereby leaving only touch event capacitance to be measured by the measuring element. The offset cancellation element is able to adjust to the initial unwanted capacitances of each sensor as well as dynamically adjust to changes in the unwanted capacitance due to the environment. In some embodiments, the offset cancellation element is a capacitance digital-to-analog converter that is controlled by a controller for offsetting the unwanted capacitance. As a result, the touchscreen system is able to utilize a small integrating capacitor thereby lowering cost and improving the dynamic range of the system.
摘要翻译：一种用于增加系统的动态范围的触摸屏系统，包括耦合到偏移抵消元件和电容测量元件的触摸屏。偏移消除元件被配置为动态地改变电容，使得它抵消触摸屏传感器的寄生和传感器电容，从而仅留下测量元件测量的触摸事件电容。偏移消除元件能够调整到每个传感器的初始不需要的电容，并且由于环境而动态地调整到不想要的电容的变化。在一些实施例中，偏移抵消元件是由控制器控制以抵消不想要的电容的电容数模转换器。因此，触摸屏系统能够利用小的积分电容器，从而降低成本并改善系统的动态范围。

8. 发明申请

US20110261006A1 SYSTEM FOR AND METHOD OF TRANSFERRING CHARGE TO CONVERT CAPACITANCE TO VOLTAGE FOR TOUCHSCREEN CONTROLLERS 有权
标题翻译：用于转换电容的电容转换系统和方法用于触控控制器的电压
公开(公告)号：US20110261006A1
公开(公告)日：2011-10-27
申请号：US12986841
申请日：2011-01-07
申请人： Ashutosh Ravindra Joharapurkar , Karthikeya Kodur , Venugopal Reddy , Patrick Chan
发明人： Ashutosh Ravindra Joharapurkar , Karthikeya Kodur , Venugopal Reddy , Patrick Chan
IPC分类号： G06F3/044
CPC分类号： H03K17/96 , G06F3/0416 , G06F3/044 , G06F2203/04104 , H03K2217/96062
摘要： A touchscreen controller system determines the actual locations of multiple simultaneous touches by eliminating mutual capacitance between adjacent rows and columns during self-capacitance measurements and selectively enabling mutual capacitance during mutual capacitance measurements. During the self-capacitance measurements, the controller system generates a set of candidate touch locations, which includes the locations of real and ghost touches. During the mutual capacitance measurements, only the locations in the candidate set are measured and, from these measurements, the actual touch locations are determined. By limiting the mutual capacitive measurements to only a small subset of the locations over the entire touch panel, real touch locations are determined on a linear order. Also, by using on-chip integration capacitors, embodiments of the invention are able to perform each measurement in a single cycle.
摘要翻译：触摸屏控制器系统通过在自电容测量期间消除相邻行和列之间的互电容来确定多个同时触摸的实际位置，并且在互电容测量期间选择性地实现互电容。在自电容测量期间，控制器系统产生一组候选触摸位置，其包括实际和重影触摸的位置。在互电容测量期间，仅测量候选组中的位置，并且从这些测量中确定实际的触摸位置。通过将互电容测量限制在整个触摸面板上的仅一小部分位置，实际触摸位置以线性顺序确定。此外，通过使用片上集成电容器，本发明的实施例能够在单个周期中执行每个测量。

9. 发明授权

US08769338B1 Saving and restoring states through low power mode 有权
标题翻译：通过低功耗模式保存和恢复状态
公开(公告)号：US08769338B1
公开(公告)日：2014-07-01
申请号：US12894047
申请日：2010-09-29
申请人： Rudolph Yeung , Patrick Chan
发明人： Rudolph Yeung , Patrick Chan
IPC分类号： G06F11/00
CPC分类号： G06F11/00 , G06F1/3203
摘要： An integrated circuit is disclosed including one or more communication devices, an operational controller configured by a state device in a normal mode for the communication device, which may consume more power than in a low power mode. The operational controller retains an operational state in a normal mode for the communication device that may be corrupted during low power mode. A save-restore processor operates a configuration bus and an essentially non-volatile memory at the start a low power mode to retain the operational state and end of the low power mode to restore the operational state.
摘要翻译：公开了一种集成电路，其包括一个或多个通信设备，由用于通信设备的正常模式的状态设备配置的运行控制器，其可以消耗比在低功率模式下更多的功率。操作控制器在通信设备的正常模式下保持可能在低功率模式下被破坏的操作状态。保存恢复处理器在启动低功率模式时操作配置总线和基本上非易失性存储器，以保持低功率模式的操作状态和结束以恢复操作状态。

10. 发明授权

US08539272B1 Reducing leakage current during low power mode 失效
标题翻译：在低功耗模式下减少漏电流
公开(公告)号：US08539272B1
公开(公告)日：2013-09-17
申请号：US12832867
申请日：2010-07-08
申请人： Rudolph Yeung , Patrick Chan
发明人： Rudolph Yeung , Patrick Chan
IPC分类号： G06F1/00 , G06F17/50 , G06F9/455
CPC分类号： G06F1/3206 , G06F17/5045
摘要： An apparatus is disclosed that may include an integrated circuit (IC) with an initialization bus configured to communicate with at least one low power mode latch operating during a initialization mode to set a value into the low power mode latch and configured to respond to the assertion of a low power mode signal by selecting the low power mode latch state to drive at least one logic gate to minimize leakage current during the low power mode. The IC may similarly configure and operate a RAM. A leakage control table may be used during initialization mode and created by other embodiments. The net list of a circuit block including at least part of the configuration block and lower power control latch may be used and/or modified to create a new net list to further minimize leakage current during low power mode. Installation packages and program systems are disclosed.
摘要翻译：公开了一种可以包括具有初始化总线的集成电路（IC），该初始化总线被配置为与初始化模式期间操作的至少一个低功率模式锁存器进行通信，以将值设置到低功率模式锁存器中并且被配置为响应该断言通过选择低功率模式锁存状态来驱动至少一个逻辑门以在低功率模式期间最小化泄漏电流的低功率模式信号。 IC可以类似地配置和操作RAM。在初始化模式中可以使用泄漏控制表，并且由其他实施例创建。可以使用和/或修改包括至少部分配置块和较低功率控制锁存器的电路块的网络列表，以创建新的网络列表，以在低功率模式期间进一步最小化泄漏电流。公开了安装包和程序系统。

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