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21. 发明授权

US09128573B2 High signal to noise ratio capacitive sensing analog front-end 有权
标题翻译：高信噪比电容式感应模拟前端
公开(公告)号：US09128573B2
公开(公告)日：2015-09-08
申请号：US13619328
申请日：2012-09-14
申请人： Paolo Angelini , Giovanni Carlo Tripoli , Ernesto Lasalandra , Tommaso Ungaretti , Kien Beng Tan , Yannick Guedon , Dianbo Guo , Sze-Kwang Tan
发明人： Paolo Angelini , Giovanni Carlo Tripoli , Ernesto Lasalandra , Tommaso Ungaretti , Kien Beng Tan , Yannick Guedon , Dianbo Guo , Sze-Kwang Tan
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0416
摘要： Capacitance sensing circuits and methods are provided. The capacitance sensing circuit includes a capacitance-to-voltage converter configured to receive a signal from a capacitance to be sensed and to provide an output signal representative of the capacitance, an output chopper configured to convert the output signal of the capacitance-to-voltage converter to a sensed voltage representative of the capacitance to be sensed, an analog accumulator configured to accumulate sensed voltages during an accumulation period of NA sensing cycles and to provide an accumulated analog value, an amplifier configured to amplify the accumulated analog value, and an analog-to-digital converter configured to convert the amplified accumulated analog value to a digital value representative of the capacitance to be sensed. The analog accumulator may include a low pass filter having a frequency response to filter wideband noise.
摘要翻译：提供电容感测电路和方法。电容感测电路包括：电容 - 电压转换器，被配置为从要感测的电容接收信号并提供表示电容的输出信号;输出斩波器，被配置为转换电容 - 电压的输出信号转换器到感测的电压，代表要感测的电容;模拟累加器，被配置为在NA感测周期的累积周期期间累积感测电压并提供累加的模拟值，被配置为放大所累积的模拟值的放大器和模拟配置为将放大的累积模拟值转换为表示要感测的电容的数字值。模拟累加器可以包括具有对滤波器宽带噪声的频率响应的低通滤波器。

22. 发明授权

US09019229B2 Sample and hold capacitance to digital converter 有权
标题翻译：数字转换器的采样和保持电容
公开(公告)号：US09019229B2
公开(公告)日：2015-04-28
申请号：US12732581
申请日：2010-03-26
申请人： Yannick Guedon , Kien Beng Tan
发明人： Yannick Guedon , Kien Beng Tan
IPC分类号： G06F3/044 , H03M11/20 , G06F3/041 , H03M3/00
CPC分类号： H03M11/20 , G06F3/0416 , G06F3/044 , H03K2217/960725 , H03M3/43
摘要： A circuit for converting charge measured from a touch screen into a digital signal can include a sample and hold circuit. The sample and hold circuit can sample and integrate a charge from a capacitive sense matrix, and hold a voltage signal representing the measured charge. A sigma delta converter can convert the voltage into a digital value.
摘要翻译：用于将从触摸屏测量的电荷转换为数字信号的电路可以包括采样和保持电路。采样和保持电路可以对来自电容检测矩阵的电荷进行采样和积分，并保持表示测量电荷的电压信号。 Σ-Δ转换器可将电压转换为数字值。

23. 发明申请

US20110242048A1 CAPACITIVE SENSING ANALOG FRONT END 有权
标题翻译：电容感测模拟前端
公开(公告)号：US20110242048A1
公开(公告)日：2011-10-06
申请号：US12972159
申请日：2010-12-17
申请人： Yannick GUEDON , Kien Beng Tan , Kusuma Adi Ningrat , Dianbo Guo
发明人： Yannick GUEDON , Kien Beng Tan , Kusuma Adi Ningrat , Dianbo Guo
IPC分类号： G06F3/045
CPC分类号： G06F3/044
摘要： A capacitive sensing analog front end for a touchscreen system having an improved signal-to-noise ratio includes a capacitance-to-voltage converter having an input for coupling to an external sampling capacitor, a summer having a first input coupled to an output of the capacitance-to-voltage converter, a low pass filter having an input coupled to an output of the summer and an output for providing an output signal; and a sample-and-hold circuit having an input coupled to the output of the low pass filter and an output coupled to a second input of the summer. The signal-to-noise ratio of the touchscreen system is improved by extracting the DC shift of a touch signal during a monitoring period and then subtracting the DC shift before integrating the touch signal.
摘要翻译：具有改进的信噪比的用于触摸屏系统的电容感测模拟前端包括具有用于耦合到外部采样电容器的输入的电容 - 电压转换器，具有耦合到所述外部采样电容器的输出的第一输入的加法器电容 - 电压转换器，具有耦合到所述加法器的输出的输入端的低通滤波器和用于提供输出信号的输出; 以及采样保持电路，其具有耦合到所述低通滤波器的输出的输入和耦合到所述夏季的第二输入的输出。通过在监视期间提取触摸信号的直流偏移，然后在积分触摸信号之前减去直流偏移，来提高触摸屏系统的信噪比。

24. 发明申请

US20110234528A1 SAMPLE AND HOLD CAPACITANCE TO DIGITAL CONVERTER 有权
标题翻译：样品和保持数字转换器的电容
公开(公告)号：US20110234528A1
公开(公告)日：2011-09-29
申请号：US12732581
申请日：2010-03-26
申请人： Yannick Guedon , Kien Beng Tan
发明人： Yannick Guedon , Kien Beng Tan
IPC分类号： G06F3/045 , H03M1/12
CPC分类号： H03M11/20 , G06F3/0416 , G06F3/044 , H03K2217/960725 , H03M3/43
摘要： A circuit for converting charge measured from a touch screen into a digital signal can include a sample and hold circuit. The sample and hold circuit can sample and integrate a charge from a capacitive sense matrix, and hold a voltage signal representing the measured charge. A sigma delta converter can convert the voltage into a digital value.
摘要翻译：用于将从触摸屏测量的电荷转换为数字信号的电路可以包括采样和保持电路。采样和保持电路可以对来自电容检测矩阵的电荷进行采样和积分，并保持表示测量电荷的电压信号。 Σ-Δ转换器可将电压转换为数字值。

25. 发明授权

US08004340B2 System and method for a semiconductor switch 有权
标题翻译：半导体开关的系统和方法
公开(公告)号：US08004340B2
公开(公告)日：2011-08-23
申请号：US12633597
申请日：2009-12-08
申请人： Dianbo Guo , Eng Jye Ng , Kien Beng Tan
发明人： Dianbo Guo , Eng Jye Ng , Kien Beng Tan
IPC分类号： H03L5/00
CPC分类号： H03K17/164
摘要： In one embodiment, a semiconductor circuit for coupling a first node to a second node includes a first transistor having a first terminal coupled to the first node, a second terminal coupled to the second node, and a control terminal coupled to a control node. The circuit also includes a level shifting circuit having a series diode for coupling a bulk terminal of the first transistor to the control node, and a supply coupling circuit coupled between a first power supply node and the control node.
摘要翻译：在一个实施例中，用于将第一节点耦合到第二节点的半导体电路包括具有耦合到第一节点的第一终端的第一晶体管，耦合到第二节点的第二终端以及耦合到控制节点的控制终端。电路还包括具有用于将第一晶体管的体端子耦合到控制节点的串联二极管的电平移动电路和耦合在第一电源节点和控制节点之间的电源耦合电路。

26. 发明授权

US07869153B1 Self servo write tune feature for preamps 有权
标题翻译：前置放大器的自伺服写入调谐功能
公开(公告)号：US07869153B1
公开(公告)日：2011-01-11
申请号：US12270982
申请日：2008-11-14
申请人： Kien Beng Tan , Parviz Rahgozar
发明人： Kien Beng Tan , Parviz Rahgozar
IPC分类号： G11B5/02
CPC分类号： G11B5/09 , G11B5/59666
摘要： A system includes N channels and a control module. Each of the N channels includes a latch and a signal generator module, where N is an integer greater than 1. The latch selectively latches a B-bit codeword, where B is an integer greater than 1. The signal generator module generates a signal based on the B bit codeword. The control module transmits the B-bit codeword via a B-bit data bus to the latch of each of the N channels. The control module generates control signals that select the latch in at least one of the N channels.
摘要翻译：一个系统包括N个通道和一个控制模块。 N个通道中的每一个包括锁存器和信号发生器模块，其中N是大于1的整数。锁存器选择性地锁存B位码字，其中B是大于1的整数。信号发生器模块生成基于在B位码字上。控制模块通过B位数据总线将B位代码字发送到N个通道中的每一个的锁存器。控制模块产生控制信号，其选择N个通道中的至少一个中的锁存器。

27. 发明申请

US20130169456A1 TESTING OF ANALOG-TO-DIGITAL CONVERTERS 有权
标题翻译：模拟数字转换器的测试
公开(公告)号：US20130169456A1
公开(公告)日：2013-07-04
申请号：US13339649
申请日：2011-12-29
申请人： Chee Weng Cheong , Kien Beng Tan
发明人： Chee Weng Cheong , Kien Beng Tan
IPC分类号： H03M1/10
CPC分类号： H03M1/108 , H03M1/46
摘要： Complete testing of an analog-to-digital converter (ADC) can be carried out using digital signals and at high speeds. Circuit elements are added to an ADC so that a first phase of testing may be carried out using a limited number of analog test voltages. The ADC may then be reconfigured using added circuit elements to disable conventional analog-to-digital conversion. A digital signal may then be applied to the ADC to rapidly test all switching elements used in analog-to-digital conversion. According to some implementations, testing times for ADCs may be reduced from hours to milliseconds.
摘要翻译：模数转换器（ADC）的完整测试可以使用数字信号和高速进行。将电路元件添加到ADC，使得可以使用有限数量的模拟测试电压来执行第一阶段的测试。然后可以使用附加的电路元件重新配置ADC，以禁用常规的模数转换。然后可以将数字信号施加到ADC以快速测试用于模数转换的所有开关元件。根据一些实施方案，ADC的测试时间可以从几小时减少到几毫秒。

28. 发明申请

US20130069805A1 LOW EMI KEYPAD CIRCUITRY 有权
标题翻译：低EMI键盘电路
公开(公告)号：US20130069805A1
公开(公告)日：2013-03-21
申请号：US13233214
申请日：2011-09-15
申请人： Hong Chean Choo , Kien Beng Tan , Gee Heng Loh
发明人： Hong Chean Choo , Kien Beng Tan , Gee Heng Loh
IPC分类号： H03K17/94
CPC分类号： H01H13/70 , H01H2239/004 , H01H2239/01
摘要： Disclosed is keypad circuitry operable to detect a pressed key while reducing electromagnetic interference (EMI). The keypad circuitry is operable to reduce EMI in two ways: a) reducing the voltage swing occurring at the row circuitry and column circuitry of the keypad, and b) reducing the number of signal transitions by restricting the signal transitions to occurring at the column and row corresponding to a pressed key. By limiting signal transitions to occurring only at the row and column corresponding to a pressed key, fewer signal transitions occur, and thus, less EMI is produced. Additionally, reduced voltage swings at the row circuitry and column circuitry results in reduced EMI.
摘要翻译：公开了可操作以在减少电磁干扰（EMI）的同时检测按下的键的键盘电路。键盘电路可操作以两种方式降低EMI：a）降低在键盘的行电路和列电路处发生的电压摆幅，以及b）通过限制信号转变发生在列而减少信号转换的数量，以及行对应于按下的键。通过将信号转换限制在对应于按下的键的行和列上才发生，产生较少的信号转换，从而产生更少的EMI。另外，行电路和列电路的减小的电压摆幅导致EMI降低。

29. 发明授权

US08335993B1 Enhanced touch sensitive interface and methods and software for making and using the same 有权
标题翻译：增强的触摸敏感界面及其制作和使用方法和软件
公开(公告)号：US08335993B1
公开(公告)日：2012-12-18
申请号：US12579987
申请日：2009-10-15
申请人： Kien Beng Tan
发明人： Kien Beng Tan
IPC分类号： G06F3/048
CPC分类号： G06F3/04886
摘要： Interfaces, circuits, architectures, devices, systems and methods for displaying, controlling, using and/or designing a virtual keyboard are disclosed. The interface generally includes a touch sensitive display having a virtual keyboard area and a viewing area. The virtual keyboard area includes a plurality of the virtual buttons. Prior to selection of a virtual button, each of the virtual buttons has a first appearance and includes a plurality of alphanumeric, graphical, and/or iconic characters. The interface further includes logic configured to receive an input from the touch sensitive display in response to a virtual button being selected, and send an output to instruct the touch sensitive display to display a second appearance of the selected virtual button. The circuits, architectures, devices, systems, and methods generally include those that embody and/or implement one or more of the inventive concepts disclosed herein.
摘要翻译：公开了用于显示，控制，使用和/或设计虚拟键盘的接口，电路，架构，设备，系统和方法。该界面通常包括具有虚拟键盘区域和观看区域的触敏显示器。虚拟键盘区域包括多个虚拟按钮。在选择虚拟按钮之前，每个虚拟按钮具有第一外观并且包括多个字母数字，图形和/或标志性字符。接口还包括配置成响应于所选择的虚拟按钮接收来自触敏显示器的输入的逻辑，并且发送输出以指示触敏显示器显示所选择的虚拟按钮的第二外观。电路，架构，设备，系统和方法通常包括实施和/或实现本文公开的一个或多个发明构思的那些。

30. 发明授权

US07924525B1 Hybrid termination of transmission line for driving hard disk drive head 有权
标题翻译：用于驱动硬盘驱动器头的传输线的混合端接
公开(公告)号：US07924525B1
公开(公告)日：2011-04-12
申请号：US12152644
申请日：2008-05-14
申请人： Kien Beng Tan , Xiao Yu Miao
发明人： Kien Beng Tan , Xiao Yu Miao
IPC分类号： G11B17/00
CPC分类号： G11B5/02 , G11B5/022
摘要： Drive circuitry for driving a load through a connection to a transmission line, such as for driving the write head of a hard disk drive. A hybrid termination is provided for termination at the connection to the transmission line. The termination is hybrid since there is both an in-series and an in-parallel component to the termination resistance. In addition, in embodiments where there is matched termination of the transmission line during a boost period of driving the load, the termination is hybrid since the termination is switched between a boost period of a write operation, and a steady state period of the write operation.
摘要翻译：用于通过与传输线的连接驱动负载的驱动电路，例如用于驱动硬盘驱动器的写头。提供混合终端用于在与传输线的连接处终止。终端是混合的，因为与终端电阻同时具有串联和并联组件。此外，在驱动负载的升压期间传输线匹配终止的实施例中，终止是混合的，因为终止在写入操作的升压期间和写入操作的稳定状态期间之间切换。

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