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    • 1. 发明申请
    • DATA SLICER CAPABLE OF CALIBRATING CURRENT MISMATCH
    • 用于校准电流误差的数据切换器
    • US20050074076A1
    • 2005-04-07
    • US10708616
    • 2004-03-15
    • Chih-Cheng ChenShang-Ping Chen
    • Chih-Cheng ChenShang-Ping Chen
    • H04L25/06
    • H04L25/063
    • A data slicer includes a comparator coupled with an input signal and a reference signal for generating a sliced signal, a waveform generator for generating a calibration signal, a pulse extension device coupled to the comparator and the waveform generator for modifying the duty cycle of the sliced signal or the calibration signal to output, a charge pump coupled between the pulse extension device and a first node for charging and discharging the first node according to the signal output from the pulse extension device, a determining circuit for adjusting the data slicer according to the level change at the first node, and a feedback device coupled between the first node and the comparator for generating the reference signal.
    • 数据限幅器包括与输入信号和用于产生分片信号的参考信号耦合的比较器,用于产生校准信号的波形发生器,耦合到比较器的脉冲扩展装置和用于修改切片信号的占空比的波形发生器 信号或校准信号输出;电荷泵,其耦合在所述脉冲扩展装置和第一节点之间,用于根据从所述脉冲扩展装置输出的信号对所述第一节点进行充电和放电;确定电路,用于根据所述脉冲扩展装置调整所述数据限幅器 第一节点处的电平变化,以及耦合在第一节点和比较器之间用于产生参考信号的反馈装置。
    • 2. 发明授权
    • Data slicer capable of calibrating current mismatch
    • 能够校准电流不匹配的数据限幅器
    • US07333568B2
    • 2008-02-19
    • US10708616
    • 2004-03-15
    • Chih-Cheng ChenShang-Ping Chen
    • Chih-Cheng ChenShang-Ping Chen
    • H04L25/06H04L25/10
    • H04L25/063
    • A data slicer includes a comparator coupled with an input signal and a reference signal for generating a sliced signal, a waveform generator for generating a calibration signal, a pulse extension device coupled to the comparator and the waveform generator for modifying the duty cycle of the sliced signal or the calibration signal to output, a charge pump coupled between the pulse extension device and a first node for charging and discharging the first node according to the signal output from the pulse extension device, a determining circuit for adjusting the data slicer according to the level change at the first node, and a feedback device coupled between the first node and the comparator for generating the reference signal.
    • 数据限幅器包括与输入信号和用于产生分片信号的参考信号耦合的比较器,用于产生校准信号的波形发生器,耦合到比较器的脉冲扩展装置和用于修改切片信号的占空比的波形发生器 信号或校准信号输出;电荷泵,其耦合在所述脉冲扩展装置和第一节点之间,用于根据从所述脉冲扩展装置输出的信号对所述第一节点进行充电和放电;确定电路,用于根据所述脉冲扩展装置调整所述数据限幅器 第一节点处的电平变化,以及耦合在第一节点和比较器之间用于产生参考信号的反馈装置。
    • 6. 发明授权
    • Optical disk drive signal calibration method and device for the same
    • 光盘驱动器信号的校准方法和设备相同
    • US07447134B2
    • 2008-11-04
    • US11349936
    • 2006-02-09
    • Chia-Hua ChouChih-Cheng Chen
    • Chia-Hua ChouChih-Cheng Chen
    • G11B5/09
    • G11B7/1267
    • The present invention is described for compensating a signal which is transmitted by a transmitting module of the optical disk drive controller through a signal channel and received and reshaped by a receiving module of the optical pickup head to calibrate the duty cycle distortion occurred. The claimed method has the steps of providing a periodic test signal, and then delaying the periodic test signal to form an adjusted test signal and adjusting a delay of an edge between the periodic test signal and the adjusted test signal instructed by a calibration signal. Afterward, the method further has the steps of transmitting the adjusted test signal to the receiving module through the signal channel, and receiving and reshaping the adjusted test signal to form a received signal, and then generating a monitor signal, finally, the method has a step of generating the calibration signal in accordance with the monitor signal.
    • 描述了本发明,用于补偿由光盘驱动器控制器的发送模块通过信号通道发送的信号,并由光学拾取头的接收模块接收和重新整形,以校准发生的占空比失真。 要求保护的方法具有提供周期性测试信号,然后延迟周期性测试信号以形成调整的测试信号,并且调整周期性测试信号与由校准信号指示的经调整的测试信号之间的边缘的延迟。 此后,该方法还具有通过信号通道将调整后的测试信号发送到接收模块的步骤,并且接收和重新调整经调整的测试信号以形成接收信号,然后产生监视信号,最后该方法具有 根据监视信号产生校准信号的步骤。
    • 9. 发明授权
    • Differential charge pump with common-mode feedback compensation
    • 差分电荷泵,具有共模反馈补偿
    • US07075348B2
    • 2006-07-11
    • US10270597
    • 2002-10-16
    • Tse-Hsiang HsuChih-Cheng Chen
    • Tse-Hsiang HsuChih-Cheng Chen
    • H03L7/093H03F3/45
    • H03L7/0896
    • A differential charge pump includes a first current, a second current, a first switching device, a second switching device, a first phase inverting switching device, a second phase inverting switching device, and a common mode feedback device. The common mode feedback device is used to adjust the current level exported by the first current source, according to the common mode voltage of the differential charge pump, so that the respective currents exported by the first current source and the second current source are to be the same. The present invention has used the property that the common mode voltage of the differential charge pump should be a constant value, so as to correct the level of the current source. As a result, the current exported by the differential charge pump can be precisely corrected. Also, the present invention only needs one charge pump, so that the structure is simple and the fabrication is easy. In addition, no matter whether there is a rising or falling signal, the correction can be performed. Therefore, it has no issue of shift for the common mode voltage.
    • 差分电荷泵包括第一电流,第二电流,第一开关装置,第二开关装置,第一相位反相开关装置,第二相位反相开关装置和共模反馈装置。 共模反馈装置用于根据差分电荷泵的共模电压来调节由第一电流源输出的电流电平,使得由第一电流源和第二电流源输出的相应电流为 一样。 本发明使用了差分电荷泵的共模电压应当是一个恒定值,从而校正电流源的电平。 结果,可以精确地校正由差动电荷泵输出的电流。 此外,本发明仅需要一个电荷泵,使结构简单,制造容易。 另外,无论是上升还是下降信号,都可以进行校正。 因此,对共模电压没有偏移的问题。