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    • 1. 发明授权
    • Channel equalizer for a high definition television
    • 用于高分辨率电视的频道均衡器
    • US5530485A
    • 1996-06-25
    • US371709
    • 1995-01-13
    • Myung S. KimHee B. Park
    • Myung S. KimHee B. Park
    • H04N7/24H04N5/21
    • H04N5/211
    • A channel equalizer for a high definition television that enhances the convergent speed of the channel equalizer by renewing first a filter coefficient of a near ghost image and then renewing a filter coefficient of a far ghost image, after distinguishing the filter coefficient corresponding to the near ghost image from the filter coefficient corresponding to the far ghost image. The equalizer comprises a finite impulse response filter for performing channel equalization on an input signal input from outside of the channel equalizer, the finite impulse response filter uses a previous filter coefficient corresponding to a near ghost image and a previous filter coefficient corresponding to a far ghost image to determine an output signal, and a filter coefficient renewal part for sequentially computing a present filter coefficient corresponding to a near ghost and a present filter coefficient corresponding to a far ghost using the output signal from the finite impulse response filter and a training sequence signal input from outside of the channel equalizer and for outputting the previous filter coefficient corresponding to the near ghost image and the previous filter coefficient corresponding to the far ghost image.
    • 一种用于高分辨率电视的信道均衡器,其通过在区分近似重影对应的滤波器系数之后,首先更新近重影图像的滤波器系数,然后更新远重影图像的滤波器系数,从而增强信道均衡器的收敛速度 来自与远重影像对应的滤镜系数的图像。 均衡器包括有限脉冲响应滤波器,用于对从信道均衡器外部输入的输入信号进行信道均衡,有限脉冲响应滤波器使用对应于近重影图像的先前滤波器系数和对应于远重影的先前滤波器系数 图像以确定输出信号;以及滤波器系数更新部件,用于使用来自有限脉冲响应滤波器的输出信号和训练序列信号来顺序地计算对应于近重影的当前滤波器系数和对应于远重影的当前滤波器系数 从信道均衡器的外部输入并输出对应于近重影像的先前滤波器系数和对应于远重影图像的先前滤波器系数。
    • 5. 发明授权
    • Channel equalizer for a HDTV using a composite filter
    • 使用复合滤波器的HDTV通道均衡器
    • US5475444A
    • 1995-12-12
    • US345823
    • 1994-11-21
    • Myung S. Kim
    • Myung S. Kim
    • H04N7/32H04L25/03H04N5/21H04N5/44H04N5/213
    • H04N5/4401H04L25/03057H04N5/211H04L2025/03382H04L2025/03484H04L2025/03636H04L25/0224Y10S348/914
    • A channel equalization system of a VSB transmission system for a HDTV which can correct phase errors by using composite filters as well as by using general data even in a period having no training sequence. The channel equalizer for a HDTV includes, a composite filter part for making the input signal applied from outside produced as a I signal and a Q signal, filtering the I signal and the Q signal according to composite filter coefficients, and transmitting the filtered I and Q signals as first and second output signals. A composite filter restoring part for calculating an error for the training sequence and an error for the general data using a synchronization signal received from outside of the channel equalizer, the first and second output signals, and calculating real composite filter coefficients and imaginary composite filter coefficients based on the errors for the I signal and the Q signal produced at the composite filter part and training sequence and the error for general data and transmitting the calculated errors to the composite filter part.
    • 一种用于HDTV的VSB传输系统的信道均衡系统,其可以通过使用复合滤波器以及甚至在没有训练序列的时段内使用通用数据来校正相位误差。 用于HDTV的信道均衡器包括:用于使从外部施加的输入信号作为I信号和Q信号的复合滤波器部分,根据复合滤波器系数对I信号和Q信号进行滤波,并且传输滤波后的I和 Q信号作为第一和第二输出信号。 一种复合滤波器恢复部件,用于使用从信道均衡器外部接收的同步信号,第一和第二输出信号以及计算实际复合滤波器系数和虚拟复合滤波器系数来计算训练序列的误差和一般数据的误差 基于复合滤波器部分产生的I信号和Q信号的误差以及一般数据的训练序列和误差,并将计算出的误差传送到复合滤波器部分。
    • 6. 发明授权
    • BICMOS device and manufacturing method thereof
    • BICMOS器件及其制造方法
    • US5192992A
    • 1993-03-09
    • US794739
    • 1991-11-18
    • Myung S. KimJong G. KimHyun S. Kim
    • Myung S. KimJong G. KimHyun S. Kim
    • H01L21/28H01L21/8228H01L21/8234H01L21/8249H01L27/06H01L27/082H01L27/088
    • H01L27/0623H01L21/28061H01L21/8249
    • A BICMOS device and manufacturing method wherein the gates of PMOS and NMOS transistors are formed by forming a first polysilicon layer which is not implanted by an impurity and forming a second polysilicon layer on the first polysilicon layer which is impurity implanted, so that the impurity doped in the second polysilicon layer is prevented from diffusing into the channel region and the voltage characteristic is prevented from changing. Emitter regions of vertical PNP and NPN bipolar transistors are self-aligned in a small chip area, and thereby the performance of the BICMOS device is improved due to the stable threshold voltage characteristic of the PMOS and NMOS transistors and high density is achieved together with improved operation speed clue to the self-alignment formation of the emitter region of the vertical PNP and NPN bipolar transistors.
    • 一种BICMOS器件及其制造方法,其中PMOS和NMOS晶体管的栅极通过形成未被杂质注入的第一多晶硅层并在杂质注入的第一多晶硅层上形成第二多晶硅层形成,使得杂质掺杂 在第二多晶硅层中防止扩散到沟道区,并且防止电压变化。 垂直PNP和NPN双极晶体管的发射极区域在小芯片区域中自对准,从而由于PMOS和NMOS晶体管的稳定的阈值电压特性而提高了BICMOS器件的性能,并且实现了高密度 对垂直PNP和NPN双极晶体管的发射极区域的自对准形成的操作速度线索。