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    • 31. 发明申请
    • Stacked LED Controllers
    • 堆叠LED控制器
    • US20090230883A1
    • 2009-09-17
    • US12050134
    • 2008-03-17
    • Eberhard Haug
    • Eberhard Haug
    • H05B37/02
    • H05B33/083
    • A driver for driving a plurality of light emitting diodes (LEDs) is formed of a plurality of LED controllers connected in series between a power supply and a reference voltage. Each controller drives one or more LEDs directly connected to it. Each controller has a voltage input terminal coupled to an output terminal of an adjacent upstream controller, and an output terminal coupled to the voltage input terminal of an adjacent downstream controller. Each controller has a normally-on bypass switch coupled between its voltage input terminal and the voltage input terminal of the adjacent upstream controller. The bypass switch completely bypasses the adjacent upstream controller when the adjacent downstream controller detects that its input voltage is below a threshold insufficient to drive the LED in the adjacent upstream controller. The bypass switch is turned off if the voltage is above the threshold.
    • 用于驱动多个发光二极管(LED)的驱动器由串联连接在电源和参考电压之间的多个LED控制器形成。 每个控制器驱动直接连接到它的一个或多个LED。 每个控制器具有耦合到相邻上游控制器的输出端子的电压输入端子和耦合到相邻下游控制器的电压输入端子的输出端子。 每个控制器具有耦合在其电压输入端子和相邻上游控制器的电压输入端子之间的常开旁路开关。 当相邻的下游控制器检测到其输入电压低于不足以驱动相邻上游控制器中的LED时,旁路开关完全绕过相邻的上游控制器。 如果电压高于阈值,旁路开关将被关闭。
    • 32. 发明授权
    • Transistors fabricated using a reduced cost CMOS process
    • 使用降低成本的CMOS工艺制造的N沟道MOS晶体管
    • US07573098B2
    • 2009-08-11
    • US11833138
    • 2007-08-02
    • Martin Alter
    • Martin Alter
    • H01L29/78
    • H01L29/1083H01L21/8238H01L29/78
    • An NMOS transistor includes a semiconductor substrate of a first conductivity type, first and second well regions of a second conductivity type formed spaced apart in the substrate, a conductive gate formed over the region between the spaced apart first and second well regions where the region of the substrate between the spaced apart first and second well regions forms the channel region, dielectric spacers formed on the sidewalls of the conductive gate, first and second heavily doped source and drain regions of the second conductivity type formed in the semiconductor substrate and being self-aligned to the edges of the dielectric spacers. The first and second well regions extend from the respective heavily doped regions through an area under the spacers to the third well region. The first and second well regions bridge the source and drain regions to the channel region of the transistor formed by the third well.
    • NMOS晶体管包括在衬底中间隔开形成的第一导电类型的第二导电类型的第一和第二阱区的半导体衬底,形成在间隔开的第一和第二阱区之间的区域上的导电栅极, 在间隔开的第一和第二阱区域之间的衬底形成沟道区,形成在导电栅极的侧壁上的电介质间隔物,形成在半导体衬底中的第二和第二重掺杂的第二导电类型的源极和漏极区, 对准电介质间隔物的边缘。 第一和第二阱区域从相应的重掺杂区域延伸穿过垫片下面的区域到第三阱区域。 第一阱区和第二阱区将源区和漏区连接到由第三阱形成的晶体管的沟道区。
    • 33. 发明申请
    • Laser Turn-On Accelerator Independent of Bias Control Loop Bandwidth
    • 激光开启加速器,独立于偏置控制环路带宽
    • US20090190621A1
    • 2009-07-30
    • US12416576
    • 2009-04-01
    • Douglas P. AndersonPeter ChambersJoseph J. Judkins, IIIWilliam Andrew Burkland
    • Douglas P. AndersonPeter ChambersJoseph J. Judkins, IIIWilliam Andrew Burkland
    • H01S3/10
    • H01S5/06825H01S5/0683
    • An accelerator circuit is incorporated in a laser diode system for accelerating the turn-on operation of the laser diode independent of the control loop bandwidth of the laser diode system. The accelerator circuit provides a boost current to a compensation capacitor upon laser turn-on which compensation capacitor operates to establish the control loop bandwidth of the laser diode system. The boost current enables the control loop to increase the bias current to the laser diode quickly. When the laser diode reaches the desired operating point, the boost current is terminated and the control loop of the laser diode system resumes normal control of the bias current. In one embodiment, the accelerator circuit includes a timer circuit controlling a current source to implement open loop turn-on control. In another embodiment, the accelerator circuit includes a comparator circuit working in conjunction with an one-shot logic circuit for providing close loop control.
    • 加速器电路被并入激光二极管系统中,用于加速激光二极管的导通操作,而与激光二极管系统的控制回路带宽无关。 加速器电路在激光接通时向补偿电容器提供升压电流,补偿电容器用于建立激光二极管系统的控制回路带宽。 升压电流使控制环能够快速增加激光二极管的偏置电流。 当激光二极管达到所需的工作点时,升压电流终止,激光二极管系统的控制回路恢复正常的偏置电流控制。 在一个实施例中,加速器电路包括控制电流源以实现开环开启控制的定时器电路。 在另一个实施例中,加速器电路包括与单触发逻辑电路结合工作以提供闭环控制的比较器电路。
    • 38. 发明授权
    • Laser turn-on accelerator independent of bias control loop bandwidth
    • 激光打开加速器独立于偏置控制环路带宽
    • US07532653B2
    • 2009-05-12
    • US11559255
    • 2006-11-13
    • Douglas P. AndersonPeter ChambersJoseph J. Judkins, IIIWilliam Andrew Burkland
    • Douglas P. AndersonPeter ChambersJoseph J. Judkins, IIIWilliam Andrew Burkland
    • H01S3/00
    • H01S5/06825H01S5/0683
    • An accelerator circuit is incorporated in a laser diode system for accelerating the turn-on operation of the laser diode independent of the control loop bandwidth of the laser diode system. The accelerator circuit provides a boost current to a compensation capacitor upon laser turn-on which compensation capacitor operates to establish the control loop bandwidth of the laser diode system. The boost current enables the control loop to increase the bias current to the laser diode quickly. When the laser diode reaches the desired operating point, the boost current is terminated and the control loop of the laser diode system resumes normal control of the bias current. In one embodiment, the accelerator circuit includes a timer circuit controlling a current source to implement open loop turn-on control. In another embodiment, the accelerator circuit includes a comparator circuit working in conjunction with an one-shot logic circuit for providing close loop control.
    • 加速器电路被并入激光二极管系统中,用于加速激光二极管的导通操作,而与激光二极管系统的控制回路带宽无关。 加速器电路在激光接通时向补偿电容器提供升压电流,补偿电容器用于建立激光二极管系统的控制回路带宽。 升压电流使控制环能够快速增加激光二极管的偏置电流。 当激光二极管达到所需的工作点时,升压电流终止,激光二极管系统的控制回路恢复正常的偏置电流控制。 在一个实施例中,加速器电路包括控制电流源以实现开环开启控制的定时器电路。 在另一个实施例中,加速器电路包括与单触发逻辑电路结合工作以提供闭环控制的比较器电路。
    • 39. 发明授权
    • LED controller IC using only one pin to dim and set a maximum LED current
    • LED控制器IC仅使用一个引脚来调光并设置最大LED电流
    • US07528555B2
    • 2009-05-05
    • US11832321
    • 2007-08-01
    • Christian Gater
    • Christian Gater
    • G05F1/00
    • H05B33/0848H05B33/0827
    • An LED driver IC is described that uses a single pin to both set the maximum current through one or more driven LEDs and variably control the brightness of the LEDs. A single resistor is connected to the control pin of the IC, where the value of the resistor sets the maximum current through the LEDs. A PWM source, outputting a pulse train at a particular duty cycle, is connected to the other end of the resistor, where the duty cycle controls the LED brightness level. When the PWM signal is low (e.g. ground), a sample and hold circuit connects the output of a feedback control voltage to an Imax current source to set a maximum current based on the external resistor value. An inverse of the duty cycle of the PWM controller controls a current Idim that is subtracted from the maximum current Imax set by the resistor. This difference current is used to control drivers for the LEDs.
    • 描述了一种LED驱动器IC,其使用单个引脚来设置通过一个或多个驱动LED的最大电流并且可变地控制LED的亮度。 单个电阻连接到IC的控制引脚,其中电阻值通过LED设置最大电流。 以特定占空比输出脉冲序列的PWM源连接到电阻器的另一端,其中占空比控制LED亮度级别。 当PWM信号为低电平(例如接地)时,采样和保持电路将反馈控制电压的输出连接到Imax电流源,以根据外部电阻值设置最大电流。 PWM控制器的占空比的倒数控制从电阻器设置的最大电流Imax中减去的电流Idim。 该差分电流用于控制LED的驱动器。
    • 40. 发明授权
    • Method for fabricating non-volatile memory cells
    • 制造非易失性存储单元的方法
    • US07514318B2
    • 2009-04-07
    • US12016904
    • 2008-01-18
    • Paul M. Moore
    • Paul M. Moore
    • H01L21/8242
    • H01L29/66825H01L27/115H01L27/11521H01L27/11558H01L29/788
    • A method for fabricating non-volatile memory cells is provided. The method includes providing a substrate, forming a first dopant region in the substrate, forming a second dopant region in the first dopant region, growing a first isolation region over a first portion of the substrate, the first dopant region, and the second dopant region, growing a second isolation region over a second portion of the substrate, the first dopant region, and the second dopant region, defining a contact region in the second dopant region, the contact region extending between the first isolation region and the second isolation region, depositing a gate oxide layer to form a first gate dielectric atop the first isolation region and a portion of the contact region, and overlaying a gate conductive layer on top of the gate oxide layer to form a first gate conductor atop the first gate dielectric.
    • 提供了制造非易失性存储单元的方法。 该方法包括提供衬底,在衬底中形成第一掺杂区,在第一掺杂区中形成第二掺杂区,在衬底的第一部分,第一掺杂区和第二掺杂区上生长第一隔离区 在衬底的第二部分上生长第二隔离区域,第一掺杂区域和第二掺杂剂区域,限定第二掺杂区域中的接触区域,在第一隔离区域和第二隔离区域之间延伸的接触区域, 沉积栅极氧化物层以在第一隔离区域和接触区域的一部分顶部形成第一栅极电介质,并且在栅极氧化物层的顶部上覆盖栅极导电层,以在第一栅极电介质顶部形成第一栅极导体。