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    • 1. 发明申请
    • METHOD AND APPARATUS FOR SIGNAL DEMODULATION AND TRANSMISSION
    • 用于信号解调和传输的方法和装置
    • US20070099582A1
    • 2007-05-03
    • US11531331
    • 2006-09-13
    • Min ChenWing Han She
    • Min ChenWing Han She
    • H04B1/38H04B1/40
    • H04B1/0071
    • A transceiver comprises a transmitter and a receiver, Dual-band radio signals are simultaneously supported by the transceiver. First and second RF signals are down converted to an intermediate signal based on a first oscillation signal. The intermediate signal is then down converted to an inphase baseband signal and a quadrature baseband signal based on a second oscillation signal. A synthesizer is provided, generating the first and second oscillation signals from one oscillation reference signal. Each of the first and second oscillation signals comprises an inphase part and a quadradure part, and the first frequency is subsequently twice the second frequency. The first frequency is the frequency of first oscillation signal plus the frequency of the second oscillation signal, and the second frequency is difference of the frequency of the first oscillation signal and the frequency of the second oscillation signal.
    • 收发器包括发射机和接收机,收发器同时支持双频无线信号。 基于第一振荡信号将第一和第二RF信号下变频为中间信号。 然后,基于第二振荡信号,将中间信号下变频为同相基带信号和正交基带信号。 提供合成器,从一个振荡参考信号产生第一和第二振荡信号。 第一和第二振荡信号中的每一个包括同相部分和四极化部分,并且第一频率随后是第二频率的两倍。 第一频率是第一振荡信号的频率加上第二振荡信号的频率,第二频率是第一振荡信号的频率与第二振荡信号的频率的差。
    • 4. 发明授权
    • Temperature compensation of output diode in an isolated flyback converter
    • 隔离反激式转换器中输出二极管的温度补偿
    • US09019727B2
    • 2015-04-28
    • US13552360
    • 2012-07-18
    • Min ChenJohn David MorrisMichael George Negrete
    • Min ChenJohn David MorrisMichael George Negrete
    • H02M3/335H02M3/156
    • H02M3/156H02M3/335
    • An isolated flyback converter having temperature compensation (TC) uses primary side sensing and an output diode, the output diode having a variable voltage drop related to its temperature. A feedback voltage VFB, proportional to the output voltage VOUT, in a feedback loop is compared to a fixed reference voltage VREF for setting a duty cycle of a power switch, wherein VFB is caused to approximately equal VREF. A TC circuit has a voltage source configured to generate a proportional-to-absolute-temperature voltage VPTAT, wherein VPTAT is at approximately VREF at a calibration temperature T0 and rises as a temperature exceeds T0. The voltage source is connected to the VFB node via a TC resistor RTC, so that at T0 no current flows through RTC. Therefore, the selection of the optimal RTC does not affect the selection of a scaling resistance for generating VFB. The current through RTC at elevated temperatures compensates VOUT.
    • 具有温度补偿(TC)的隔离反激式转换器使用初级侧感测和输出二极管,输出二极管具有与其温度相关的可变电压降。 将与反馈回路中的输出电压VOUT成比例的反馈电压VFB与用于设定电源开关的占空比的固定参考电压VREF进行比较,其中使VFB大致相等于VREF。 TC电路具有被配置为产生比例绝对温度电压VPTAT的电压源,其中VPTAT在校准温度T0处大约为VREF,并且随着温度超过T0而升高。 电压源通过TC电阻RTC连接到VFB节点,使得在T0,没有电流流经RTC。 因此,最优RTC的选择不会影响生成VFB的缩放电阻的选择。 在高温下通过RTC的电流补偿了VOUT。
    • 5. 发明授权
    • Adaptive track follow control
    • 自适应跟踪控制
    • US08896955B1
    • 2014-11-25
    • US13162095
    • 2011-06-16
    • Min ChenAlain ChahwanShang-Chen WuQixing ZhengAlexander BabinskiDuc T. Phan
    • Min ChenAlain ChahwanShang-Chen WuQixing ZhengAlexander BabinskiDuc T. Phan
    • G11B5/596
    • G11B5/59622G11B5/59694
    • A disk drive comprises a track follow control system having a plurality of selectable frequency modes, the track follow control system configured to receive a position error signal and to output a control signal based on the position error signal, wherein the control signal is used by a head assembly to position a head over a disk. The disk drive also comprises a state estimator configured to receive the control signal and a position signal indicating a position of the head, to estimate a disturbance based on the control signal and the position signal, and to output an estimated disturbance signal based on the estimated disturbance. The disk drive further comprises a disturbance evaluator configured to receive the estimated disturbance signal, and to select one of the frequency modes of the track follow control system based on the estimated disturbance signal.
    • 磁盘驱动器包括具有多个可选频率模式的轨道跟随控制系统,轨道跟随控制系统被配置为接收位置误差信号并基于位置误差信号输出控制信号,其中控制信号由 头部组件以将磁头定位在磁盘上。 磁盘驱动器还包括状态估计器,其被配置为接收控制信号和指示头部的位置的位置信号,以基于控制信号和位置信号来估计干扰,并且基于所估计的干扰信号来输出估计的干扰信号 骚乱。 磁盘驱动器还包括被配置为接收所估计的干扰信号的干扰评估器,并且基于估计的干扰信号选择轨道跟随控制系统的频率模式之一。
    • 6. 发明申请
    • LED lighting device with high color rendering index
    • LED照明装置具有高显色指数
    • US20130329418A1
    • 2013-12-12
    • US13492866
    • 2012-06-10
    • Bishou ChenChungen ChenNa FengMin Chen
    • Bishou ChenChungen ChenNa FengMin Chen
    • F21V9/10
    • H05B33/0857F21K9/00F21Y2113/10F21Y2113/13F21Y2113/17F21Y2115/10
    • An LED (light emitting diode) lighting device with high color rendering index includes a plurality of LED luminous units, wherein one of the LED luminous units has (u′, v′) chromaticity coordinates defined on a 1976CIE chromaticity diagram, a distance between every two coordinate points is not less than 0.01, a distance between at least one of the coordinate points and any other coordinate point is not less than 0.1, and coordinates of at least one of the coordinate points meet a condition that 0.10≦u′≦0.45 and 0.30≦v′≦0.50. By selecting a variety of LEDs within a certain spectral range to mix light, the color rendering index of the LED lighting device with high color rendering index of the present invention can be improved, and simultaneously the cost of the light source can be controlled.
    • 具有高显色指数的LED(发光二极管)照明装置包括多个LED发光单元,其中一个LED发光单元具有在1976CIE色度图上定义的(u',v')色度坐标,每个 两个坐标点不小于0.01,坐标点和任何其他坐标点中的至少一个之间的距离不小于0.1,并且至少一个坐标点的坐标满足0.10≤u≤0.45 和0.30 @ v'@ 0.50。 通过选择特定光谱范围内的各种LED来混合光,可以提高本发明的高显色指数的LED照明装置的显色指数,同时可以控制光源的成本。
    • 9. 发明授权
    • Dual-band antenna assembly
    • 双频天线组合
    • US08217840B2
    • 2012-07-10
    • US12627014
    • 2009-11-30
    • Min ChenCho-Ju Chung
    • Min ChenCho-Ju Chung
    • H01Q1/38
    • H01Q1/38H01Q5/40H01Q9/0407H01Q9/42H01Q21/30
    • A dual-band antenna assembly is positioned on a substrate, and includes an insulation body, a plane antenna and a microstrip antenna. The insulation body includes a plane surface paralleled to the substrate, and a side surface perpendicularly extending from edges of the plane surface to the substrate. The plane antenna includes a first feed portion and a first radiator. The first feed portion passes through the substrate to the plane surface of the insulation body. The first radiator is substantially positioned on a center of the plane surface of the insulation body, and electrically connected to the first feed portion. The microstrip antenna includes a second feed portion and a second radiator. The second radiator is a microstrip, electrically connected to the second feed portion and positioned on the side surface of the insulation body.
    • 双频天线组件位于基板上,并且包括绝缘体,平面天线和微带天线。 绝缘体包括与基板平行的平面,以及从平面的边缘垂直延伸到基板的侧面。 平面天线包括第一馈送部分和第一辐射器。 第一进料部分穿过基材到绝缘体的平面。 第一散热器基本上位于绝缘体的平面表面的中心,并且电连接到第一馈送部分。 微带天线包括第二馈电部分和第二辐射器。 第二散热器是微带,电连接到第二馈电部分并且位于绝缘体的侧表面上。