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    • 73. 发明申请
    • METHODS AND SYSTEMS FOR LED DRIVER HAVING CONSTANT OUTPUT CURRENT
    • 具有恒定输出电流的LED驱动器的方法和系统
    • US20110148324A1
    • 2011-06-23
    • US12698829
    • 2010-02-02
    • Hongyue DuXinfeng LiuWei ZhangJiusheng ZhangHongbo Zhang
    • Hongyue DuXinfeng LiuWei ZhangJiusheng ZhangHongbo Zhang
    • H05B41/36
    • H05B33/0812Y02B20/345
    • A control circuit for a switched mode power supply includes a transconductance amplifier circuit for receiving a voltage signal related to a current from an input of the power supply and producing a first signal, an analog signal processor coupled to the amplifier circuit for receiving the first signal and a second signal from the input of the power supply and a third signal from an output of the power supply. The analog signal processor is configured to produce a fourth signal as a function of the first, the second, and the third signals. An adder circuit is coupled to the fourth signal and a dimmer control signal, and the adder circuit is configured to output a fifth signal. A comparator circuit is coupled to the adder circuit for providing a control signal to a power transistor that controls current flow in the power supply based on comparison of the fifth signal and a reference signal.
    • 用于开关模式电源的控制电路包括跨导放大器电路,用于从电源的输入端接收与电流相关的电压信号并产生第一信号;耦合到放大器电路的模拟信号处理器,用于接收第一信号 以及来自电源的输入的第二信号和来自电源的输出的第三信号。 模拟信号处理器被配置为产生作为第一信号,第二信号和第三信号的函数的第四信号。 加法器电路耦合到第四信号和调光控制信号,并且加法器电路被配置为输出第五信号。 比较器电路耦合到加法器电路,用于根据第五信号和参考信号的比较,向控制电源中的电流的功率晶体管提供控制信号。
    • 75. 发明申请
    • METHODS AND APPARATUS FOR EDITING IMAGES
    • 用于编辑图像的方法和装置
    • US20110085741A1
    • 2011-04-14
    • US12896546
    • 2010-10-01
    • Wei ZhangWai Kuen Cham
    • Wei ZhangWai Kuen Cham
    • G06K9/40
    • G06T5/003G06T5/50G06T2200/21G06T2207/10016G06T2207/20221
    • Methods and apparatus for editing an image having focused and defocused objects are provided in the present application. According to an embodiment, the method comprises: determining blurriness of edge pixels in the image; propagating the determined blurriness to non-edge pixels adjacent to each of the edge pixels so as to determine blurriness of the non-edge pixels; estimating a focus map based on the blurriness of the edge pixels and the non-edge pixels to identify the defocused objects and the focused objects; and refocusing the defocused objects based on the focus map or defocusing at least one of the defocused objects and the focused objects.
    • 在本申请中提供了用于编辑具有聚焦和散焦对象的图像的方法和装置。 根据实施例,该方法包括:确定图像中的边缘像素的模糊度; 将确定的模糊度传播到与每个边缘像素相邻的非边缘像素,以便确定非边缘像素的模糊度; 基于边缘像素和非边缘像素的模糊度来估计焦点图,以识别散焦对象和聚焦对象; 并且基于焦点图重新聚焦散焦对象,或者使至少一个散焦对象和聚焦对象散焦。
    • 79. 发明申请
    • OPTICAL COUPLER FOR NON-INVASIVE SPECTROPHOTOMETRIC PATIENT MONITORING
    • 光纤耦合器用于非入门光谱测量患者监测
    • US20100317949A1
    • 2010-12-16
    • US12483610
    • 2009-06-12
    • Eric V. CHAMNESSWei Zhang
    • Eric V. CHAMNESSWei Zhang
    • A61B5/1455
    • A61B5/14552A61B5/14553
    • Flexible, low-cost, physically robust optical coupling patches for use in spectrophotometric patient monitoring, and methods of fabrication thereof, are described. The optical coupling patch comprises a flexible base layer having a skin-contacting surface and a first aperture formed therethrough that establishes an optical interface with a skin surface when the base layer is placed against the skin surface. The optical coupling patch further comprises an elastomeric waveguiding member laterally disposed on a surface of the base layer opposite the skin-contacting surface. The optical coupling patch guides optical radiation between a laterally propagating state at a first location laterally distal from the first aperture and a generally vertically propagating state at the first aperture.
    • 描述了用于分光光度患者监测的柔性,低成本,物理上坚固的光耦合贴片及其制造方法。 光学耦合贴片包括具有皮肤接触表面的柔性基底层和穿过其形成的第一孔,当基底层抵靠皮肤表面放置时,其与皮肤表面建立光学界面。 光学耦合贴片还包括横向设置在与皮肤接触表面相对的基底层的表面上的弹性体波导构件。 光耦合贴片在第一位置处的横向传播状态之间引导光辐射,并且在第一孔处大致垂直传播状态。