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    High speed level shifters and method of operation
    1.
    发明授权
    High speed level shifters and method of operation 有权
    高速电平转换器和操作方法

    公开(公告)号：US08421518B2

    公开(公告)日：2013-04-16

    申请号：US13044378

    申请日：2011-03-09

    申请人： Christian Larsen

    发明人： Christian Larsen

    IPC分类号： H03L5/00

    CPC分类号： H03K3/356165

    摘要： A circuit comprising an inverter coupled to an input and receiving an input signal. A first pull-down transistor coupled to the inverter, pulling down an output when the input signal is low. A second pull-down transistor coupled to the input, pulling down a complementary output when the input signal is high. A first pull-up transistor coupled to the complementary output, pulling up the output when the input signal is high. A second pull-up transistor coupled to the output, pulling up the complementary output when the input signal is low. A first switch receiving a first control signal, coupled to the complementary output. A first strong pull-up transistor coupled to the first switch, assisting the pull up of the output. A second switch coupled to the output, receiving a second control signal. A second strong pull-up transistor coupled to the second switch, assisting the pull up of the complementary output.

    摘要翻译： 一种电路，包括耦合到输入端并接收输入信号的反相器。 耦合到逆变器的第一下拉晶体管，当输入信号为低时，下拉输出。 耦合到输入的第二下拉晶体管，当输入信号为高时，下拉互补输出。 耦合到互补输出的第一上拉晶体管，当输入信号为高电平时提升输出。 耦合到输出的第二上拉晶体管，当输入信号为低电平时提升互补输出。 接收耦合到互补输出的第一控制信号的第一开关。 耦合到第一开关的第一强上拉晶体管，辅助输出的上拉。 耦合到输出的第二开关，接收第二控制信号。 耦合到第二开关的第二强上拉晶体管，辅助互补输出的上拉。

    Knotted filament flying disc
    2.
    发明授权
    Knotted filament flying disc 有权
    打结长丝飞碟

    公开(公告)号：US08348713B2

    公开(公告)日：2013-01-08

    申请号：US12099545

    申请日：2008-04-08

    申请人： Savanna Nichole Groft ,  Erik Christian Larsen, Jr. ,  Patrick Nicholas Groft

    发明人： Savanna Nichole Groft ,  Erik Christian Larsen, Jr. ,  Patrick Nicholas Groft

    IPC分类号： A63H33/18

    CPC分类号： A63H33/18

    摘要： A flying disc is formed entirely of a knotted filament, such as knotted, stitched, or crocheted filament, which may comprise yarn, rope, or the like. A generally flat, generally circular web, defining a plane, is formed by pulling loops of the filament through other loops to form successive interconnected rows of knots using, e.g., crochet stitches. In one embodiment, the knotting proceeds in a helical pattern from a central portion of the circular web to a peripheral portion, with stitches added to an otherwise uniform stitching pattern as necessary to maintain a generally flat shape to the web. The center of the circular web may comprise knotted filament, or may include a void or hole. A circumferential lip connected to the periphery of the circular web and extending out of the plane of the circular web, at least during flight, is formed by dropping stitches from a uniform stitching pattern as necessary to create the desired shape.

    摘要翻译： 飞盘完全由打结的细丝形成，例如打结的，缝合的或钩编的长丝，其可以包括纱线，绳索等。 通过将细丝的环通过其它环拉动而形成通常平坦的，通常为圆形的网，限定平面，以使用例如钩编针迹形成连续相互连接的结排。 在一个实施例中，打结以螺旋形图案从圆形腹板的中心部分延伸到周边部分，根据需要将针迹添加到另外均匀的缝合图案，以维持幅材的大致平坦的形状。 圆形网的中心可以包括打结的细丝，或者可以包括空隙或孔。 至少在飞行期间，连接到圆形腹板周边并延伸出圆形腹板的平面的圆周唇缘通过根据需要从均匀的缝合图案中放下针迹形成所需的形状。

    Systems and methods for offset cancellation method for DC-coupled audio drivers
    3.
    发明授权
    Systems and methods for offset cancellation method for DC-coupled audio drivers 有权
    用于直流耦合音频驱动器的偏移消除方法的系统和方法

    公开(公告)号：US08344797B2

    公开(公告)日：2013-01-01

    申请号：US12623202

    申请日：2009-11-20

    申请人： Lorenzo Crespi ,  Christian Larsen

    发明人： Lorenzo Crespi ,  Christian Larsen

    IPC分类号： H03F1/02

    CPC分类号： H03F1/301 ,  H03F1/305 ,  H03F3/45986

    摘要： Direct current (DC) offset in and audio driver can cause a constant drain on power even when there is no sound. Furthermore it can cause an audible pop when the audio driver is enabled. A scaled replica output stage can be employed to perform DC offset cancellation offline during a sampling phase. Once DC offset cancellation is achieved, the audio driver uses a full scale output stage during the operation phase.

    摘要翻译： 即使没有声音，直流（DC）偏移和音频驱动器也会导致电源的恒定漏电。 此外，当音频驱动程序启用时，它可能会导致声音弹出。 可以采用缩放的副本输出级，以在采样阶段离线执行直流偏移消除。 一旦实现了DC偏移消除，则音频驱动器在操作阶段使用满量程输出级。

    ANTI-POP CIRCUIT
    4.
    发明申请
    ANTI-POP CIRCUIT 有权
    反向电话

    公开(公告)号：US20120062320A1

    公开(公告)日：2012-03-15

    申请号：US13300012

    申请日：2011-11-18

    申请人： Xin Fan ,  Christian Larsen ,  Lorenzo Crespi

    发明人： Xin Fan ,  Christian Larsen ,  Lorenzo Crespi

    IPC分类号： H03F3/26

    CPC分类号： H03F1/305 ,  H03F3/3022 ,  H03F3/45183 ,  H03F2200/144 ,  H03F2203/45526 ,  H03F2203/45534 ,  H03F2203/45674

    摘要： Presently many audio chips suffer from pop issues, which is especially serious for single ended audio drivers. An audio pop is a disturbance in the output caused by a sudden transition of chip power, particularly when a chip is powered on or powered off. Furthermore, compensation networks included in the amplifiers on audio chips for stability offer a significant path for transmitting power disturbances to the output. Hence, circuitry is developed to suppress pops in the output stages of an amplifier.

    摘要翻译： 目前许多音频芯片遭受流行问题，对于单端音频驱动程序来说尤其严重。 音频弹奏是由芯片功率的突然转换引起的输出干扰，特别是当芯片通电或断电时。 此外，用于稳定性的用于音频芯片的放大器中的补偿网络提供了将功率干扰发送到输出的重要路径。 因此，开发电路以抑制放大器的输出级中的弹出。

    Tuning and DAC Selection of High-Pass Filters for Audio Codecs
    5.
    发明申请
    Tuning and DAC Selection of High-Pass Filters for Audio Codecs 有权
    调谐和DAC选择音频编解码器的高通滤波器

    公开(公告)号：US20110087346A1

    公开(公告)日：2011-04-14

    申请号：US12578477

    申请日：2009-10-13

    申请人： Christian Larsen ,  Lorenzo Crespi ,  Mouna Elkhatib

    发明人： Christian Larsen ,  Lorenzo Crespi ,  Mouna Elkhatib

    IPC分类号： G06F17/00

    CPC分类号： H03G5/005

    摘要： An integrated audio codec includes a high-pass filter to prevent damage to personal computer speakers and other components. The audio codec may be compliant with HD audio standards and can operate with generic software drivers. Tuning of the high-pass filter is provided through an external pin-out where either an external capacitor or external resistors provide an ability to tune the high-pass filter. In one implementation, a tuning voltage is digitized into a tuning code used by a digital high-pass filter. In addition, multiplexers can be used to insure only the audio path leading to the speakers is filtered.

    摘要翻译： 集成音频编解码器包括高通滤波器，以防止损坏个人计算机扬声器和其他组件。 音频编解码器可以符合HD音频标准，并且可以与通用软件驱动程序一起操作。 通过外部引脚提供高通滤波器的调谐，其中外部电容器或外部电阻器提供调谐高通滤波器的能力。 在一个实现中，调谐电压被数字化为由数字高通滤波器使用的调谐码。 此外，多路复用器可以用于确保仅通过扬声器的音频路径被过滤。

    2.1 Crossover Equalization in PC Audio Applications
    6.
    发明申请
    2.1 Crossover Equalization in PC Audio Applications 有权
    2.1 PC音频应用中的交叉均衡

    公开(公告)号：US20110085668A1

    公开(公告)日：2011-04-14

    申请号：US12579200

    申请日：2009-10-14

    申请人： Christian Larsen ,  Mouna Elkhatib ,  James W Wihardja ,  Jonathan Chien

    发明人： Christian Larsen ,  Mouna Elkhatib ,  James W Wihardja ,  Jonathan Chien

    IPC分类号： H04R5/00 ,  G06F17/00

    CPC分类号： H04R3/14

    摘要： Challenges to the implementation of equalization in the 2.1 environment arise from the constraints imposed by HD audio requirements and Windows® Vista™. A hybrid software hardware solution overcomes many of the challenges by exploiting the software capability for equalization and using a hardware codec to perform the separation into high frequency and low frequency audio streams needed to drive stereo speakers and a subwoofer.

    摘要翻译： 在2.1环境中实现均衡的挑战来自于HD音频要求和Windows®Vista™的限制。 混合软件硬件解决方案通过利用软件功能进行均衡和使用硬件编解码器来执行分离到驱动立体声扬声器和低音炮所需的高频和低频音频流中，克服了许多挑战。

    Anti-Pop Circuit
    7.
    发明申请
    Anti-Pop Circuit 有权
    反流行电路

    公开(公告)号：US20100321112A1

    公开(公告)日：2010-12-23

    申请号：US12488438

    申请日：2009-06-19

    申请人： Xin Fan ,  Christian Larsen ,  Lorenzo Crespi

    发明人： Xin Fan ,  Christian Larsen ,  Lorenzo Crespi

    IPC分类号： H03F3/45 ,  H03F3/16 ,  H03F1/38

    CPC分类号： H03F1/305 ,  H03F3/3022 ,  H03F3/45183 ,  H03F2200/144 ,  H03F2203/45526 ,  H03F2203/45534 ,  H03F2203/45674

    摘要： Presently many audio chips suffer from pop issues, which is especially serious for single ended audio drivers. An audio pop is a disturbance in the output caused by a sudden transition of chip power, particularly when a chip is powered on or powered off. Furthermore, compensation networks included in the amplifiers on audio chips for stability offer a significant path for transmitting power disturbances to the output. Hence, circuitry is developed to suppress pops in the output stages of an amplifier.

    摘要翻译： 目前许多音频芯片遭受流行问题，对于单端音频驱动程序来说尤其严重。 音频弹奏是由芯片功率的突然转换引起的输出干扰，特别是当芯片通电或断电时。 此外，用于稳定性的用于音频芯片的放大器中的补偿网络提供了将功率干扰发送到输出的重要路径。 因此，开发电路以抑制放大器的输出级中的弹出。

    Knotted Filament Flying Disc
    9.
    发明申请
    Knotted Filament Flying Disc 有权
    打结长丝飞碟

    公开(公告)号：US20090253339A1

    公开(公告)日：2009-10-08

    申请号：US12099545

    申请日：2008-04-08

    申请人： Patrick Nicholas Groft ,  Erik Christian Larsen, Jr.

    发明人： Patrick Nicholas Groft ,  Erik Christian Larsen, Jr.

    IPC分类号： A63H27/00

    CPC分类号： A63H33/18

    摘要： A flying disc is formed entirely of a knotted filament, such as knotted, stitched, or crocheted filament, which may comprise yarn, rope, or the like. A generally flat, generally circular web, defining a plane, is formed by pulling loops of the filament through other loops to form successive interconnected rows of knots using, e.g., crochet stitches. In one embodiment, the knotting proceeds in a helical pattern from a central portion of the circular web to a peripheral portion, with stitches added to an otherwise uniform stitching pattern as necessary to maintain a generally flat shape to the web. The center of the circular web may comprise knotted filament, or may include a void or hole. A circumferential lip connected to the periphery of the circular web and extending out of the plane of the circular web, at least during flight, is formed by dropping stitches from a uniform stitching pattern as necessary to create the desired shape.

    摘要翻译： 飞盘完全由打结的细丝形成，例如打结的，缝合的或钩编的长丝，其可以包括纱线，绳索等。 通过将细丝的环通过其它环拉动而形成通常平坦的，通常为圆形的网，限定平面，以使用例如钩编针迹形成连续相互连接的结排。 在一个实施例中，打结以螺旋形图案从圆形腹板的中心部分延伸到周边部分，根据需要将针迹添加到另外均匀的缝合图案，以维持幅材的大致平坦的形状。 圆形网的中心可以包括打结的细丝，或者可以包括空隙或孔。 至少在飞行期间，连接到圆形腹板周边并延伸出圆形腹板的平面的圆周唇缘通过根据需要从均匀的缝合图案中放下针迹形成所需的形状。