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1. 发明申请

US20060186854A1 Global closed loop control system with DV/DT control and EMI/switching loss reduction 有权
标题翻译：具有DV / DT控制和EMI /开关损耗降低的全局闭环控制系统
公开(公告)号：US20060186854A1
公开(公告)日：2006-08-24
申请号：US11398449
申请日：2006-04-05
申请人： Eddy Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
发明人： Eddy Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
IPC分类号： H02P23/00
CPC分类号： H02M1/44 , H02M5/458 , H02M2001/0029 , H02M2001/123 , H03K17/163 , H03K17/168
摘要： A gate driver for a power switch, comprising a gate drive circuit coupled to the gate of the power switch for at least one of turning on and turning off the power switch; a gate voltage control circuit in the gate drive circuit for controlling a voltage applied to the gate of the power switch during at least one of turning on and turning off the power switch; and a signal supplied to the gate voltage control circuit indicative of a voltage rate of change per unit time to be applied in at least one of turning on and turning off the power switch.
摘要翻译：一种用于电源开关的栅极驱动器，包括耦合到电源开关的栅极的栅极驱动电路，用于打开和关闭电源开关中的至少一个; 栅极驱动电路中的栅极电压控制电路，用于在打开和关闭电源开关的至少一个期间控制施加到电源开关的栅极的电压; 以及提供给栅极电压控制电路的信号，其指示在打开和关闭电源开关中的至少一个中施加每单位时间的电压变化率。

2. 发明申请

US20060119303A1 Global closed loop control system with DV/DT control and EMI/switching loss reduction 有权
标题翻译：具有DV / DT控制和EMI /开关损耗降低的全局闭环控制系统
公开(公告)号：US20060119303A1
公开(公告)日：2006-06-08
申请号：US11337282
申请日：2006-01-23
申请人： Eddy Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
发明人： Eddy Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
IPC分类号： H02P23/00
CPC分类号： H02M1/44 , H02M5/458 , H02M2001/0029 , H02M2001/123 , H03K17/163 , H03K17/168
摘要： A motor drive system control provides global closed loop feedback to cooperatively operate system components to adaptively reduce noise and provide noise cancellation feedback. An active EMI filter reduces differential and common mode noise on an input and provides a noise level indication to a system controller. Power switches in both a power converter and power inverter are cooperatively controlled with dynamic dv/dt control to reduce switching noise according to a profile specified by the controller. The dv/dt control is provided as an analog signal to a high voltage IC and codified as a pulse width for a level shifting circuit supplying control signals to the high voltage gate drive. A noise extraction circuit and technique obtain fast noise sampling to permit noise cancellation and adaptive noise reduction.
摘要翻译：电机驱动系统控制提供全局闭环反馈以协同操作系统组件以自适应地降低噪声并提供噪声消除反馈。有源EMI滤波器可减少输入端的差分和共模噪声，并向系统控制器提供噪声电平指示。电源转换器和电源逆变器中的电源开关通过动态dv / dt控制协同控制，以根据控制器指定的配置文件降低开关噪声。 dv / dt控制作为模拟信号提供给高电压IC，并被编码为用于向高压栅极驱动器提供控制信号的电平移位电路的脉冲宽度。噪声提取电路和技术获得快速噪声采样，以允许噪声消除和自适应降噪。

3. 发明授权

US07405528B2 Global closed loop control system with DV/DT control and EMI/switching loss reduction 有权
标题翻译：具有DV / DT控制和EMI /开关损耗降低的全局闭环控制系统
公开(公告)号：US07405528B2
公开(公告)日：2008-07-29
申请号：US11337282
申请日：2006-01-23
申请人： Eddy Ying Yin Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
发明人： Eddy Ying Yin Ho , Yong Li , Jun Honda , David Tam , Toshio Takahashi
IPC分类号： G05B5/01
CPC分类号： H02M1/44 , H02M5/458 , H02M2001/0029 , H02M2001/123 , H03K17/163 , H03K17/168
摘要： A motor drive system control provides global closed loop feedback to cooperatively operate system components to adaptively reduce noise and provide noise cancellation feedback. An active EMI filter reduces differential and common mode noise on an input and provides a noise level indication to a system controller. Power switches in both a power converter and power inverter are cooperatively controlled with dynamic dv/dt control to reduce switching noise according to a profile specified by the controller. The dv/dt control is provided as an analog signal to a high voltage IC and codified as a pulse width for a level shifting circuit supplying control signals to the high voltage gate drive. A noise extraction circuit and technique obtain fast noise sampling to permit noise cancellation and adaptive noise reduction.
摘要翻译：电机驱动系统控制提供全局闭环反馈以协同操作系统组件以自适应地降低噪声并提供噪声消除反馈。有源EMI滤波器可减少输入端的差分和共模噪声，并向系统控制器提供噪声电平指示。电源转换器和电源逆变器中的电源开关通过动态dv / dt控制协同控制，以根据控制器指定的配置文件降低开关噪声。 dv / dt控制作为模拟信号提供给高电压IC，并被编码为用于向高压栅极驱动器提供控制信号的电平移位电路的脉冲宽度。噪声提取电路和技术获得快速噪声采样，以允许噪声消除和自适应降噪。

4. 发明授权

US07810734B2 Anti-skimming card reader surface configuration 有权
标题翻译：防脱卡读卡器表面配置
公开(公告)号：US07810734B2
公开(公告)日：2010-10-12
申请号：US11568647
申请日：2005-05-03
申请人： Steven Barnett Rakoff , Ronald Arthur Flook , David Tam
发明人： Steven Barnett Rakoff , Ronald Arthur Flook , David Tam
IPC分类号： G06K13/00
CPC分类号： G07F19/205 , G06K7/0091 , G06K7/084 , G06K13/08 , G06K13/0887 , G07F7/005 , G07F7/0873 , G07F7/0893 , G07F19/20 , G07F19/2055
摘要： A card reader housing (20) has an exterior surface configuration (22) that includes a plurality of distinct surface portions (24-38) aligned at oblique angles relative to each other. The exterior surface configuration (22) prevents the placement of a skimming reader over the top of the card reader housing (20). In a disclosed example, a finger-receiving notch (50) is directly aligned with a reader (60) and has a depth and a dimension sized for receiving at least a portion of a finger holding a card inserted into a slot (46) in the housing (20). Any alteration of the notch (50) dimensions prevents proper operation of the card reader.
摘要翻译：读卡器外壳（20）具有外表面构型（22），其包括相对于彼此以倾斜角对准的多个不同的表面部分（24-38）。外表面配置（22）防止将阅读器读取器放置在读卡器外壳（20）的顶部上。在公开的示例中，手指接收凹口（50）与读取器（60）直接对准，并且具有尺寸设置为用于接收保持插入到插槽（46）中的插槽（46）中的卡的手指的至少一部分的深度和尺寸壳体（20）。凹口（50）尺寸的任何改变都会阻止读卡器正常工作。

5. 发明申请

US20070228178A1 Anti-Skimming Card Reader Surface Configuration 有权
标题翻译：防滑读卡器表面配置
公开(公告)号：US20070228178A1
公开(公告)日：2007-10-04
申请号：US11568647
申请日：2005-05-03
申请人： Steven Rakoff , Ronald Flook , David Tam
发明人： Steven Rakoff , Ronald Flook , David Tam
IPC分类号： G06K7/00
CPC分类号： G07F19/205 , G06K7/0091 , G06K7/084 , G06K13/08 , G06K13/0887 , G07F7/005 , G07F7/0873 , G07F7/0893 , G07F19/20 , G07F19/2055
摘要： A card reader housing has an exterior surface configuration that includes a plurality of distinct surface portions (24-38) aligned at oblique angles relative to each other. The exterior surface configuration (22) prevents the placement of a skimming reader over the top of the card reader housing (20). In a disclosed example, a finger-receiving notch (50) is directly aligned with a reader (60) and has a depth and a dimension sized for receiving at least a portion of a finger holding a card inserted into a slot (46) in the housing (20). Any alteration of the notch (50) dimensions prevents proper operation of the card reader.
摘要翻译：读卡器外壳具有外表面构造，其包括相对于彼此以倾斜角度排列的多个不同的表面部分（24-38）。外表面配置（22）防止将阅读器读取器放置在读卡器外壳（20）的顶部上。在公开的示例中，手指接收凹口（50）与读取器（60）直接对准，并且具有尺寸设置为用于接收保持插入到插槽（46）中的插槽（46）中的卡的手指的至少一部分的深度和尺寸壳体（20）。凹口（50）尺寸的任何改变都会阻止读卡器正常工作。

6. 发明授权

US5325258A Power transistor driver circuit with current sensing and current overprotection and method for protecting power transistor from overcurrent 失效
标题翻译：功率晶体管驱动电路，具有电流检测和电流过流保护，以及用于保护功率晶体管免受过电流的影响
公开(公告)号：US5325258A
公开(公告)日：1994-06-28
申请号：US936028
申请日：1992-08-26
申请人： Chris Choi , David Tam
发明人： Chris Choi , David Tam
IPC分类号： H03K17/082 , H02H3/26 , G05F1/573
CPC分类号： H03K17/0822 , H03K17/0828
摘要： A circuit and method for driving a power transistor device. The circuit for driving a power transistor device has a driver having an input and an output, the output coupled to a control input of the power transistor device and the input coupled to a primary control voltage source for driving the power transistor device. A current sensing device is coupled to the power transistor device for providing a signal proportional to the current in the power transistor device. An amplifier is coupled to the current sensing device for providing a substantially linear control signal proportional to the current in the power transistor device, the linear control signal being provided to the input of the driver as a secondary drive signal for driving the power transistor device when a current level in the power transistor device greater than a threshold level is detected. A detector is provided for detecting when the current in the power transistor device is greater than the threshold level. The detector is coupled to the current sensing device and to a reference level source, and provides an overcurrent signal to the driver for switching the driver from being driven by the primary control voltage source to the secondary drive signal. The secondary drive signal drives the driver so as to reduce the current level in the power transistor device. The driven power transistor device is preferably a power MOSFET or IGBT.
摘要翻译：一种用于驱动功率晶体管器件的电路和方法。用于驱动功率晶体管器件的电路具有驱动器，其具有输入和输出，所述驱动器耦合到功率晶体管器件的控制输入，耦合到主控制电压源的输入端用于驱动功率晶体管器件。电流感测装置耦合到功率晶体管器件，用于提供与功率晶体管器件中的电流成比例的信号。放大器耦合到电流感测装置，用于提供与功率晶体管器件中的电流成比例的基本上线性的控制信号，线性控制信号作为辅助驱动信号提供给驱动器的输入端，用于驱动功率晶体管器件检测功率晶体管器件中大于阈值电平的电流电平。提供检测器，用于检测功率晶体管器件中的电流何时大于阈值电平。检测器耦合到电流感测装置和参考电平源，并且向驱动器提供过电流信号，以将驱动器切换为由主控制电压源驱动到辅助驱动信号。辅助驱动信号驱动驱动器以便降低功率晶体管器件中的电流电平。驱动功率晶体管器件优选地是功率MOSFET或IGBT。

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