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    • 24. 发明授权
    • Frequency error detection apparatus and method based on histogram information on input signals
    • 基于输入信号直方图信息的频率误差检测装置和方法
    • US07043383B2
    • 2006-05-09
    • US10799890
    • 2004-03-15
    • Jae-wook LeeJung-hyun Lee
    • Jae-wook LeeJung-hyun Lee
    • G01R23/00
    • H03L7/091H03M13/00
    • A frequency error detection apparatus and method based on histogram information of an input signal. The apparatus includes an A/D converter for and converting an analog signal into digital values; a zero crossing point detector for detecting sign changes of the digital values, and detecting zero crossing points; a period information detector for detecting period information which is the number of the digital values corresponding to a periodic signal; a histogram information calculator for counting the number of detections for the respective period information based on the period information, and calculating error-detection-target histogram information; and a frequency error calculator for detecting a difference between the error-detection-target histogram information and a reference histogram information, and calculating a frequency error value based on the difference. This can shorten time for frequency error detections and improve accuracy of the detected frequency error value.
    • 一种基于输入信号的直方图信息的频率误差检测装置和方法。 该装置包括用于将模拟信号转换成数字值的A / D转换器; 用于检测数字值的符号变化的零交叉点检测器,以及检测过零点; 周期信息检测器,用于检测作为周期信号对应的数字值的周期信息; 直方图信息计算器,用于根据周期信息对各周期信息的检测次数进行计数,并计算误差检测目标直方图信息; 以及频率误差计算器,用于检测误差检测目标直方图信息和参考直方图信息之间的差异,并且基于该差计算频率误差值。 这可以缩短频率误差检测的时间并提高检测到的频率误差值的精度。
    • 26. 发明授权
    • Receiver for reducing intersymbol interference of a channel and compensating for signal gain loss, and method thereof
    • 用于减少信道的符号间干扰并补偿信号增益损耗的接收机及其方法
    • US07969218B2
    • 2011-06-28
    • US11812928
    • 2007-06-22
    • Jae-wook Lee
    • Jae-wook Lee
    • H03K3/00
    • H04L25/03878H03K3/3565
    • Example embodiments are directed to a receiver for reducing ISI of at least one data transmission channel and compensating for signal gain loss, and method thereof. A receiver may include a high pass filter and a Schmitt trigger controlled by a plurality of first control signals and a plurality of second control signals. The plurality of first control signals and the plurality of second control signals may be used to shift a first trigger voltage and a second trigger voltage of the Schmitt trigger. A method of reducing intersymbol interference and compensating for signal gain loss of a receiver connected to at least one data transmission channel is also provided.
    • 示例性实施例涉及用于减少至少一个数据传输信道的ISI并补偿信号增益损失的接收机及其方法。 接收机可以包括高通滤波器和由多个第一控制信号和多个第二控制信号控制的施密特触发器。 多个第一控制信号和多个第二控制信号可用于移位施密特触发器的第一触发电压和第二触发电压。 还提供了一种减少符号间干扰并补偿连接到至少一个数据传输信道的接收机的信号增益损失的方法。
    • 28. 发明授权
    • Device and method for detecting a period of an input signal
    • 用于检测输入信号的周期的装置和方法
    • US06965659B2
    • 2005-11-15
    • US09917234
    • 2001-07-30
    • Jae-wook LeeDae-yun Shim
    • Jae-wook LeeDae-yun Shim
    • G11B20/16G11B20/10G11B20/14H04L7/033H04L7/00
    • G11B20/10037G11B20/10527G11B20/1403H04L7/0334
    • A device and method for detecting a period of an input signal including a count value setting portion; an A/D converter; a zero cross point detecting portion to detect a symbol change of digital values received from the A/D converter; a arithmetic processing unit; a counter; and a period value calculating portion. The arithmetic processing unit divides two sampling sectors, having a zero cross point in their center, by a preset value which is set in the count value setting portion, predicts a zero cross point sector based on the digital values of two sampling points, and calculates a count value of the reference clock in accordance with the predicted zero cross point sector and the preset value which is set in the count value setting portion.
    • 一种用于检测包括计数值设置部分的输入信号的周期的装置和方法; A / D转换器; 零交叉点检测部分,用于检测从A / D转换器接收的数字值的符号变化; 算术处理单元; 柜台 以及周期值计算部。 算术处理单元将在其中心具有零交叉点的两个采样扇区除以设定在计数值设定部分中的预设值,基于两个采样点的数字值预测零交叉点扇区,并计算 根据预测的零交叉点扇区的参考时钟的计数值和在计数值设定部分中设定的预设值。