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    Information medium device with expansible function module
    1.
    发明申请
    Information medium device with expansible function module 审中-公开
    具有可扩展功能模块的信息介质设备

    公开(公告)号：US20050210168A1

    公开(公告)日：2005-09-22

    申请号：US10851136

    申请日：2004-05-24

    申请人： Wei-Hong Chen ,  Shih-Ta Hung

    发明人： Wei-Hong Chen ,  Shih-Ta Hung

    IPC分类号： G06F13/10 ,  G06F13/40 ,  G06K7/00

    CPC分类号： G06F13/4068 ,  G06F2213/0042

    摘要： An information medium device having an expansible function module, more particularly, an information medium device such as a USB flash disk or a MP3 player having an expansible function module such as a radio module disposed on an external lid, so that when the external lid is covered onto the USB flash disk or the MP3 player, the expanded radio function can be operated.

    摘要翻译： 一种具有可扩展功能模块的信息介质设备，更具体地，涉及诸如USB闪存盘或MP3播放器的信息介质设备，其具有可扩展功能模块，诸如设置在外部盖上的无线电模块，使得当外部盖子 覆盖在USB闪存盘或MP3播放器上，可以操作扩展的收音功能。

    Apparatus and methods for adjusting voltage controlled oscillator gain
    4.
    发明授权
    Apparatus and methods for adjusting voltage controlled oscillator gain 有权
    调整压控振荡器增益的装置和方法

    公开(公告)号：US08456244B2

    公开(公告)日：2013-06-04

    申请号：US13100167

    申请日：2011-05-03

    申请人： Thomas Obkircher ,  Bipul Agarwal ,  Wei-Hong Chen

    发明人： Thomas Obkircher ,  Bipul Agarwal ,  Wei-Hong Chen

    IPC分类号： H03L7/08

    CPC分类号： H04L7/0331 ,  H03B5/1212 ,  H03L7/08 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/1072 ,  H03L2207/04

    摘要： Apparatus and methods for adjusting a gain of an electronic oscillator, such as a voltage-controlled oscillator (VCO), are disclosed. In one aspect, an apparatus for compensating for VCO gain variations includes a charge pump controller. The charge pump controller can be configured to select a VCO gain model based on a comparison of a VCO gain indicator and a threshold value stored in a memory, obtain VCO gain model parameters from the memory corresponding to the selected VCO gain model, and compute a charge pump current control value using the VCO gain model parameters. The charge pump current control value can be used to compensate for VCO gain variations.

    摘要翻译： 公开了一种用于调节诸如压控振荡器（VCO）的电子振荡器的增益的装置和方法。 在一个方面，用于补偿VCO增益变化的装置包括电荷泵控制器。 电荷泵控制器可以被配置为基于存储在存储器中的VCO增益指示器和阈值的比较来选择VCO增益模型，从对应于所选择的VCO增益模型的存储器获得VCO增益模型参数，并计算 电荷泵电流控制值采用VCO增益模型参数。 电荷泵电流控制值可用于补偿VCO增益变化。

    Device and method for providing DC-offset estimation
    7.
    发明授权
    Device and method for providing DC-offset estimation 有权
    提供直流偏移估计的装置和方法

    公开(公告)号：US07496341B2

    公开(公告)日：2009-02-24

    申请号：US11089075

    申请日：2005-03-24

    申请人： Wei-Hong Chen ,  Huashih Lin ,  Wei-Chung Peng

    发明人： Wei-Hong Chen ,  Huashih Lin ,  Wei-Chung Peng

    IPC分类号： H04B1/10

    CPC分类号： H04B1/30

    摘要： A communication system may include an equalizing device for DC-offset mitigation. The system includes: an input analog-to-digital converter configured to receive an input signal and produce a digital signal from the input signal; and a DC-offset estimation device coupled with the input analog-to-digital converter. The DC-offset estimation device is configured to produce a quantized DC-offset estimate from the digital signal. And the input analog-to-digital converter is configured to receive the quantized DC-offset estimate and to adjust a DC offset of the digital signal.

    摘要翻译： 通信系统可以包括用于DC偏移减轻的均衡装置。 该系统包括：输入模拟 - 数字转换器，被配置为接收输入信号并从输入信号产生数字信号; 以及与输入模数转换器耦合的DC偏移估计装置。 DC偏移估计装置被配置为从数字信号产生量化的DC偏移估计。 并且输入模数转换器被配置为接收量化的DC偏移估计并且调整数字信号的DC偏移。

    Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems
    8.
    发明授权
    Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems 有权
    用于长距离副载波复用光波系统的光纤发射机

    公开(公告)号：US06559994B1

    公开(公告)日：2003-05-06

    申请号：US09376594

    申请日：1999-08-18

    申请人： Wei-Hong Chen ,  Winston I. Way

    发明人： Wei-Hong Chen ,  Winston I. Way

    IPC分类号： H04B1004

    CPC分类号： H04L27/367 ,  H04B10/2519 ,  H04B10/50 ,  H04B2210/254 ,  H04J14/0298 ,  H04L27/103

    摘要： An optical fiber transmitter, which consists of a modulated optical source, a pre-distortion circuit, a chirped-fiber grating, an optical circulator or a coupler, is designed to transport subcarrier multiplexed (SCM) signals over a long transmission distance. Here the SCM signals include: analog amplitude-modulated vestigial-sideband (AM-VSB) cable television signals, digital quadrature-amplitude-modulated (QAM) signals, or orthogonal-frequency-division-multiplexed (OFDM) signals, or quadrature-phase-shift-keyed (QPSK) signals, etc. on radio-frequency (RF) or microwave carriers, and/or digital wireless signals on RF, microwave or millimeter wave carriers. The modulated light source can be a directly modulated laser diode, or an external LiNbO3 modulator with a continuous wave (CW) laser diode as the source, or an external electro-absorption modulator with an integrated CW laser diode. The chirped fiber grating has a chromatic dispersion characteristic which is opposite to that of the output transmission path, so that the majority of nonlinear distortions and carrier suppression caused by the optical fiber dispersion in a long-distance system can be significantly reduced. The pre-distortion circuit is used to correct the residual nonlinear distortions and eliminate the residual carrier suppression effect, which cannot be completely eliminated by the chirped fiber grating. The pre-distortion circuit is also used to suppress the residual nonlinear distortions and carrier suppression effects caused by the chirped fiber grating itself.

    摘要翻译： 由调制光源，预失真电路，啁啾光纤光栅，光环行器或耦合器组成的光纤发射机被设计成在长的传输距离上传输副载波多路复用（SCM）信号。 这里，SCM信号包括：模拟幅度调制残留边带（AM-VSB）有线电视信号，数字正交幅度调制（QAM）信号或正交频分复用（OFDM）信号或正交相位 在射频（RF）或微波载波上的移动键控（QPSK）信号等，和/或RF，微波或毫米波载波上的数字无线信号。 调制光源可以是直接调制的激光二极管或具有连续波（CW）激光二极管作为源的外部LiNbO3调制器，或具有集成CW激光二极管的外部电吸收调制器。 啁啾光纤光栅具有与输出传输路径的色散特性相反的色散特性，从而可以显着地减少远距离系统中的光纤色散引起的大部分非线性失真和载波抑制。 预失真电路用于校正残余非线性失真，消除残留载波抑制效应，这不能被啁啾光纤光栅完全消除。 预失真电路还用于抑制由啁啾光纤光栅本身引起的残余非线性失真和载波抑制效应。

    APPARATUS AND METHODS FOR ADJUSTING VOLTAGE CONTROLLED OSCILLATOR GAIN
    9.
    发明申请
    APPARATUS AND METHODS FOR ADJUSTING VOLTAGE CONTROLLED OSCILLATOR GAIN 有权
    调整电压控制振荡器增益的装置和方法

    公开(公告)号：US20120280730A1

    公开(公告)日：2012-11-08

    申请号：US13100167

    申请日：2011-05-03

    申请人： Thomas Obkircher ,  Bipul Agarwal ,  Wei-Hong Chen

    发明人： Thomas Obkircher ,  Bipul Agarwal ,  Wei-Hong Chen

    IPC分类号： H03L7/08

    CPC分类号： H04L7/0331 ,  H03B5/1212 ,  H03L7/08 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/1072 ,  H03L2207/04

    摘要： Apparatus and methods for adjusting a gain of an electronic oscillator, such as a voltage-controlled oscillator (VCO), are disclosed. In one aspect, an apparatus for compensating for VCO gain variations includes a charge pump controller. The charge pump controller can be configured to select a VCO gain model based on a comparison of a VCO gain indicator and a threshold value stored in a memory, obtain VCO gain model parameters from the memory corresponding to the selected VCO gain model, and compute a charge pump current control value using the VCO gain model parameters. The charge pump current control value can be used to compensate for VCO gain variations.

    摘要翻译： 公开了一种用于调节诸如压控振荡器（VCO）的电子振荡器的增益的装置和方法。 在一个方面，用于补偿VCO增益变化的装置包括电荷泵控制器。 电荷泵控制器可以被配置为基于存储在存储器中的VCO增益指示器和阈值的比较来选择VCO增益模型，从对应于所选择的VCO增益模型的存储器获得VCO增益模型参数，并计算 电荷泵电流控制值采用VCO增益模型参数。 电荷泵电流控制值可用于补偿VCO增益变化。

    Equalizing device and method capable of WLAN applications
    10.
    发明申请
    Equalizing device and method capable of WLAN applications 有权
    均衡设备和方法能够WLAN应用

    公开(公告)号：US20060217069A1

    公开(公告)日：2006-09-28

    申请号：US11089075

    申请日：2005-03-24

    申请人： Wei-Hong Chen ,  Huashih Lin ,  Wei-Chung Peng

    发明人： Wei-Hong Chen ,  Huashih Lin ,  Wei-Chung Peng

    IPC分类号： H04B1/00 ,  H04B1/26 ,  H04B15/00

    CPC分类号： H04B1/30

    摘要： A communication system may include an equalizing device for DC-offset mitigation. The system includes: an input analog-to-digital converter configured to receive an input signal and produce a digital signal from the input signal; and a DC-offset estimation device coupled with the input analog-to-digital converter. The DC-offset estimation device is configured to produce a quantized DC-offset estimate from the digital signal. And the input analog-to-digital converter is configured to receive the quantized DC-offset estimate and to adjust a DC offset of the digital signal.

    摘要翻译： 通信系统可以包括用于DC偏移减轻的均衡装置。 该系统包括：输入模拟 - 数字转换器，被配置为接收输入信号并从输入信号产生数字信号; 以及与输入模数转换器耦合的DC偏移估计装置。 DC偏移估计装置被配置为从数字信号产生量化的DC偏移估计。 并且输入模数转换器被配置为接收量化的DC偏移估计并且调整数字信号的DC偏移。