公开(公告)号：US06243804B1

公开(公告)日：2001-06-05

申请号：US09121201

申请日：1998-07-22

Applicant: Chuck Cheuk-wing Cheng

Inventor： Chuck Cheuk-wing Cheng

IPC: G06F948

CPC classification number: G06F9/30116 ,  G06F9/30123 ,  G06F9/3863

Abstract: A system and method for efficiently handling interrupts in a microcontroller environment is disclosed. An interrupt handling circuit preserves a current state of a microcontroller comprising a plurality of primary registers for storing information relating to the current state of the microcontroller and a plurality of shadow registers coupled to at least two of the primary registers for storing the information contained in the coupled primary registers in response to receiving an interrupt enter signal from an interrupt signal generator. In one embodiment the information relating to the current state of the microcontroller includes the program counter, accumulator data, CPU status data, and an address pointer to data memory. In a preferred embodiment, the information is restored to the primary registers within one clock cycle of receiving an interrupt exit signal from the interrupt signal generator. In a pipeline stage embodiment a sequence of interrupt instructions is fed into the pipeline in subsequent clock cycles after the data is stored in the shadow registers, facilitating a rapid response to the interrupt.

Abstract translation: 公开了一种用于在微控制器环境中高效地处理中断的系统和方法。 中断处理电路保持微控制器的当前状态，该微控制器包括用于存储与微控制器的当前状态相关的信息的多个主寄存器，以及耦合到至少两个主寄存器的多个影子寄存器，用于存储包含在 响应于从中断信号发生器接收到中断输入信号，耦合的主寄存器。 在一个实施例中，与微控制器的当前状态相关的信息包括程序计数器，累加器数据，CPU状态数据和到数据存储器的地址指针。 在优选实施例中，在从中断信号发生器接收中断退出信号的一个时钟周期内，信息被恢复到初级寄存器。 在流水线级实施例中，在将数据存储在影子寄存器中之后的后续时钟周期中，中断指令序列被馈送到流水线中，便于对中断的快速响应。

公开(公告)号：US08056858B2

公开(公告)日：2011-11-15

申请号：US11679324

申请日：2007-02-27

Applicant: Frederick Koehler ,  Wing Cheng ,  Helen H. Cheng, legal representative

Inventor： Frederick Koehler ,  Wing Cheng

IPC: G02B23/16 ,  B64G1/52

CPC classification number: B23P11/005 ,  B33Y80/00 ,  Y10T29/49826

Abstract: An extendable device for providing radiation occlusion and/or aero-thermal protection is disclosed. In various representative aspects, the present invention generally includes an extendable collar and a flexure configured to provide elastic properties (e.g., to facilitate stowage and/or deployment with respect to conformational disposition of the flexure). The flexure is coupled to a collar and is also coupled to the housing of an optical device.

Abstract translation: 公开了一种用于提供辐射阻挡和/或空气 - 热保护的可延伸装置。 在各种代表性方面，本发明通常包括可延伸的套环和挠曲件，其构造成提供弹性性能（例如，以便于相对于挠曲件的构造布置来进行存放和/或展开）。 挠曲件联接到轴环并且还联接到光学装置的壳体。

公开(公告)号：US20060181155A1

公开(公告)日：2006-08-17

申请号：US11060230

申请日：2005-02-17

Applicant: Wing Cheng

Inventor： Wing Cheng

IPC: H01H47/00

CPC classification number: H02M3/1584 ,  H02M3/156 ,  H02M2001/0025 ,  Y10T307/74 ,  Y10T307/766 ,  Y10T307/826 ,  Y10T307/858 ,  Y10T307/865

Abstract: A power supply includes at least one current source for providing current and a reference voltage generator for providing a first reference voltage and a second reference voltage. A control circuit selectively couples the current to the power supply output as a function of a monitored voltage, the first reference voltage, and the second reference voltage.

Abstract translation: 电源包括用于提供电流的至少一个电流源和用于提供第一参考电压和第二参考电压的参考电压发生器。 控制电路根据所监视的电压，第一参考电压和第二参考电压选择性地将电流耦合到电源输出端。

公开(公告)号：US20060139970A1

公开(公告)日：2006-06-29

申请号：US11021763

申请日：2004-12-23

Applicant: Wing Cheng

Inventor： Wing Cheng

IPC: H02M3/335

CPC classification number: H02M3/3372 ,  Y02B70/1433

Abstract: A method is disclosed for operating a push-pull converter in an above resonant frequency operating mode, where the above resonant frequency operating mode produces a switching frequency that is higher than the natural operating resonant frequency of the converter circuit. This in turn means that the resonant period is longer than the turn-on period of each of the switches in the primary circuit. A method for operating a push-pull converter in an above resonant frequency mode, the push-pull converter having a first power switch and a second power switch operating in alternating sequence with each, the push pull converter having a transformer with a primary winding coupled to the first and second power switches and with a secondary winding coupled to a secondary circuit and an output capacitor, comprises generating an operating resonant frequency from a leakage inductance of said transformer in series with a capacitance; and generating a switching frequency for the power switches that is higher than the operating resonant frequency.

Abstract translation: 公开了一种用于在上述谐振频率工作模式中操作推挽转换器的方法，其中上述谐振频率工作模式产生的开关频率高于转换器电路的自然工作谐振频率。 这又意味着谐振周期长于初级电路中每个开关的导通周期。 一种用于在上述谐振频率模式下操作推挽转换器的方法，所述推挽转换器具有第一功率开关和第二功率开关，其中每个与所述推挽转换器交替顺序工作，所述推挽转换器具有变压器，所述变压器具有初级绕组耦合 耦合到第一和第二功率开关以及耦合到次级电路和输出电容器的次级绕组，包括从所述变压器的漏电感产生与电容串联的工作谐振频率; 并产生高于工作谐振频率的功率开关的开关频率。

公开(公告)号：US06795292B2

公开(公告)日：2004-09-21

申请号：US09861984

申请日：2001-05-15

Applicant: Dennis Grimard ,  Arnold Kholodenko ,  Alex Veytser ,  Senh Thach ,  Wing Cheng

Inventor： Dennis Grimard ,  Arnold Kholodenko ,  Alex Veytser ,  Senh Thach ,  Wing Cheng

IPC: H01G2300

CPC classification number: H01L21/67109 ,  H01L21/67103

Abstract: An apparatus for reducing by-product formation in a semiconductor wafer-processing chamber. In a first embodiment, the apparatus comprises a chuck having a chucking electrode and a radially extending peripheral flange. A collar is disposed over the peripheral flange defining a first gap therebetween, and circumscribes the chuck. A heater element is embedded within the collar and adapted for connection to a power source. In a second embodiment, the apparatus comprises a chuck having a chucking electrode and a radially extending peripheral flange, and a collar having a heater element embedded therein. The collar is disposed over the peripheral flange to define a gap therebetween, and circumscribes the chuck. Moreover, a pedestal having a gas delivery system therein is disposed below the chuck and collar. In a third embodiment, the apparatus comprises a chuck having a chucking electrode and a radially extending peripheral flange, a collar, and a waste ring having a heater element embedded therein. The waste ring is disposed over the peripheral flange defining a gap therebetween, and circumscribes the chuck. The collar is chucked to the waste ring, and the waste ring is chucked to a pedestal support. Moreover, the waste ring and pedestal each have a gas delivery system therein for regulating the temperature of the collar.

Abstract translation: 一种用于减少半导体晶片处理室中副产物形成的装置。 在第一实施例中，该装置包括具有夹紧电极和径向延伸的周边凸缘的卡盘。 套环设置在周边凸缘之上，限定了它们之间的第一间隙，并限制卡盘。 加热器元件嵌入在轴环内并且适于连接到电源。 在第二实施例中，该装置包括具有夹紧电极和径向延伸的周边凸缘的卡盘以及嵌入其中的加热器元件的套环。 套环设置在周边凸缘上方以在其间形成间隙并限制卡盘。 此外，其中具有气体输送系统的基座设置在卡盘和轴环的下方。 在第三实施例中，该装置包括具有夹紧电极和径向延伸的周边凸缘，套环和具有嵌入其中的加热器元件的废料环的卡盘。 废环设置在周边凸缘之上，限定了它们之间的间隙，并且围绕卡盘。 将衣领卡在废物环上，将废物环卡在基座支架上。 此外，废环和底座各自具有用于调节套环温度的气体输送系统。

公开(公告)号：US06572814B2

公开(公告)日：2003-06-03

申请号：US09866353

申请日：2001-05-24

Applicant: Shamouil Shamoulian ,  Arnold Kholodenko ,  Senh Thach ,  Wing Cheng

Inventor： Shamouil Shamoulian ,  Arnold Kholodenko ,  Senh Thach ,  Wing Cheng

IPC: B22F704

CPC classification number: H02N13/00 ,  Y10T29/49149

Abstract: A method of fabricating a semiconductor wafer support chuck apparatus having a first sintered layer and a second sintered layer. The method comprising the steps of providing the first sintered layer having a plurality of gas distribution ports and providing the second sintered layer having a plurality of grooves. The first sintered layer is stacked on top of the second sintered layer, where a diffusion bonding layer is disposed between the first sintered layer and the second sintered layer. Thereafter, the stacked first and second sintered layers are resintered such that the diffusion bonding layer joins the first and second sintered layers together to form a semiconductor wafer support apparatus.

Abstract translation: 一种制造具有第一烧结层和第二烧结层的半导体晶片支撑卡盘装置的方法。 该方法包括以下步骤：提供具有多个气体分配端口的第一烧结层，并提供具有多个凹槽的第二烧结层。 第一烧结层堆叠在第二烧结层的顶部，在第一烧结层和第二烧结层之间设置扩散接合层。 然后，堆叠的第一和第二烧结层重新烧结，使得扩散接合层将第一和第二烧结层与第二烧结层结合在一起形成半导体晶片支撑装置。

公开(公告)号：US6024687A

公开(公告)日：2000-02-15

申请号：US74478

申请日：1998-05-06

Applicant: David Wai-Wing Cheng

Inventor： David Wai-Wing Cheng

IPC: B04B9/12 ,  B04B5/02 ,  B04B7/06 ,  B04B9/08 ,  F16D43/18 ,  B04B9/00

CPC classification number: F16D43/18 ,  B04B9/08 ,  B04B2009/085

Abstract: A centrifuge rotor locking apparatus includes a C-shaped annular member for a snap-fit engagement about a drive hub. The member comprises first and second contacting segments and a third non-contacting segment. Centrifugation causes the contacting segments to flex outwardly and come into contact with the interior wall of the drive hole of a mounted rotor. The unbalanced mass distribution of the annular member causes the member to tend to slide off the drive hub. This further separates the contacting segments, thus increasing the locking effect of the annular member/drive hub assembly to the rotor as the member is wedged in place between rotor and drive hub.

Abstract translation: 离心机转子锁定装置包括用于与驱动毂相配合的C形环形构件。 该构件包括第一和第二接触段和第三非接触段。 离心导致接触段向外弯曲并与安装的转子的驱动孔的内壁接触。 环形构件的不平衡质量分布导致构件倾向于从驱动毂滑出。 这进一步分离接触段，从而当构件楔入转子和驱动轮毂之间的适当位置时，增加环形构件/驱动轮毂组件对转子的锁定效果。

公开(公告)号：US5752910A

公开(公告)日：1998-05-19

申请号：US545280

申请日：1992-12-07

Applicant: David Wai-Wing Cheng

Inventor： David Wai-Wing Cheng

IPC: B04B9/10 ,  B04B13/00 ,  G01P3/489

CPC classification number: B04B13/003 ,  Y10S388/924

Abstract: A centrifuge rotor overspeed protection system which can operate with rotors of at least two speed ranges. A set of coding elements are provided on the rotors coded to represent the actual maximum safe speed rating of the rotor. An additional set of coding elements coded to correspond to the maximum speed in the lower speed range are also provided such that the rotor can be operated at the maximum speed possible in a prior art centrifuge designed for operation in the lower speed range. The detection circuit for the coding elements automatically adjusts the detection threshold depending on the average values of the sensor output peaks corresponding to the codes.

Abstract translation: 离心机转子超速保护系统，可与至少两个转速范围的转子一起使用。 在转子上提供一组编码元件，以代表转子的实际最大安全速度额定值。 还提供了编码为对应于较低速度范围内的最大速度的附加编码元件组，使得可以在设计用于在较低速度范围内操作的现有技术的离心机中以最大速度操作转子。 用于编码元件的检测电路根据与代码对应的传感器输出峰值的平均值来自动调整检测阈值。