公开(公告)号：US06333952B1

公开(公告)日：2001-12-25

申请号：US09301762

申请日：1999-04-29

申请人： Il-Taek Lim ,  Cheol-Hong Min ,  Sang-Hee Cho ,  Seung-Jai Min ,  Seong-Ok Bae ,  Kyoung-Won Lim

发明人： Il-Taek Lim ,  Cheol-Hong Min ,  Sang-Hee Cho ,  Seung-Jai Min ,  Seong-Ok Bae ,  Kyoung-Won Lim

IPC分类号： H04B166

CPC分类号： H04N11/20 ,  H04N5/4401 ,  H04N5/46 ,  H04N7/0122 ,  H04N19/30 ,  H04N19/59 ,  H04N21/440218

摘要： A decoder for a digital TV receiver is disclosed. The present decoder improves the picture quality of a video signal down converted when an SD class TV receiver receives an HD class video signal. Generally, the decoder receives data in block units, converts a format of the data into a format for display, memorizes the data, processes the memorized data, and displays the processed data by converting the format to include more horizontal color signals than vertical color signals, memorizing and reproducing the data in downsampling the data in block units in a given ratio, and storing the data.

摘要翻译： 公开了一种用于数字电视接收机的解码器。 当SD类TV接收机接收HD级视频信号时，本解码器提高了下变频的视频信号的画面质量。 通常，解码器以块为单位接收数据，将数据的格式转换为用于显示的格式，存储数据，处理存储的数据，并且通过将格式转换成包括比垂直颜色信号更多的水平颜色信号来显示处理的数据 以给定的比例以块为单位对数据进行下采样来存储和再现数据，并存储数据。

公开(公告)号：US07068915B1

公开(公告)日：2006-06-27

申请号：US09710959

申请日：2000-11-14

申请人： Sang Hee Cho

发明人： Sang Hee Cho

IPC分类号： H04N5/91

CPC分类号： H04N5/783 ,  H04N5/915 ,  H04N9/8042 ,  H04N9/8205

摘要： An apparatus and method for controlling a display time point of an MPEG bit stream of a recording medium which is capable of controlling accurately a display time point of an MPEG bit stream in case that an MPEG bit stream of a recording medium is processed to be displayed according to a special decoding command and returns to a normal decoding command. The apparatus for controlling a display time point of an MPEG bit stream of a recording medium includes: a crystal oscillator for generating a system clock frequency; a counter being initialized according to a system clock reference (SCR), for receiving the system clock frequency from the crystal oscillator, counting it and outputting a system time clock (STC), in a normal decoding mode; a PTS (Presentation Time Stamps) controller for receiving and storing a presentation time stamp of a predetermined picture in a special decoding mode, and outputting the stored presentation time stamp as an initial value of the counter if it returns to a normal mode; and a comparator for receiving the system time clock (STC) from the counter and a presentation time stamp (PTS) of a predetermined picture, comparing them and outputting a display command signal in case that the system time clock (STC) and the presentation time stamp (PTS) of a predetermined picture are identical to each other upon comparison.

摘要翻译： 一种用于控制记录介质的MPEG比特流的显示时间点的装置和方法，其能够在处理记录介质的MPEG比特流被显示的情况下精确地控制MPEG比特流的显示时间点 根据特殊的解码命令返回正常的解码命令。 用于控制记录介质的MPEG比特流的显示时间点的装置包括：用于产生系统时钟频率的晶体振荡器; 根据系统时钟参考（SCR）初始化计数器，用于从正常解码模式中接收来自晶体振荡器的系统时钟频率，对其进行计数并输出系统时钟（STC）; 用于以特殊解码模式接收和存储预定图像的呈现时间戳的PTS（呈现时间戳）控制器，并且如果返回到正常模式则将存储的呈现时间戳作为计数器的初始值输出; 以及用于从计数器接收系统时间时钟（STC）和预定图像的呈现时间戳（PTS）的比较器，在系统时钟（STC）和呈现时间（STC）的情况下进行比较并输出显示命令信号 比较时，预定图像的印章（PTS）彼此相同。

公开(公告)号：US06408104B1

公开(公告)日：2002-06-18

申请号：US09221980

申请日：1998-12-29

申请人： Kyoung-Won Lim ,  Hee Sub Lee ,  Cheol-Hong Min ,  Sang-Hee Cho ,  Il-Taek Lim

发明人： Kyoung-Won Lim ,  Hee Sub Lee ,  Cheol-Hong Min ,  Sang-Hee Cho ,  Il-Taek Lim

IPC分类号： H04B169

CPC分类号： H04N19/86

摘要： The method and apparatus for eliminating noise in a video signal encoder according to the present invention divides an input video signal into a noise component and a pure video signal component and performs filtering gain control taking account of a rate of energy of the noise and pure signal, thereby performing the exact filtering with respect to an actual noise component and improving picture quality. The present invention also extracts a noise filtered signal component in advance, performs filtering of the remaining signal through gain control, and combines the extracted pure signal component and the filtered remaining signal, thereby eliminating the noise while keeping the resolution of the signal. If the video signal is processed in the unit of blocks, the noise filtering is performed considering this fact, thereby reducing blocking effect and improving picture quality.

摘要翻译： 根据本发明的用于消除视频信号编码器中的噪声的方法和装置将输入视频信号分成噪声分量和纯视频信号分量，并且考虑噪声和纯信号的能量速率来执行滤波增益控制 从而对实际噪声分量执行精确滤波并提高图像质量。 本发明还提前提取噪声滤波的信号分量，通过增益控制对剩余信号进行滤波，并将提取的纯信号分量和滤波后的剩余信号进行组合，从而消除噪声，同时保持信号的分辨率。 如果以块为单位处理视频信号，则考虑到这一事实进行噪声滤波，从而减少阻塞效果并提高图像质量。

公开(公告)号：US5795537A

公开(公告)日：1998-08-18

申请号：US693608

申请日：1996-08-07

申请人： Mamoru Senna ,  Sang-Hee Cho ,  Kenji Hamada

发明人： Mamoru Senna ,  Sang-Hee Cho ,  Kenji Hamada

IPC分类号： B02C15/02 ,  C01G33/00 ,  C04B35/499 ,  C04B35/622 ,  C04B35/628

CPC分类号： C04B35/622 ,  C04B35/499

摘要： The present invention provides a method of producing composite oxide ceramics which is capable of efficiently producing single-phase multi-component metal oxide ceramics having less impurity phase and excellent dielectric characteristics, by a simple process comprising sintering at a low temperature. The method has the steps of mixing a metallic hydroxide or hydrous gel with a plurality of metallic oxide powders to prepare a raw material mixture powder, activating the raw material mixture powder by mechanochemical treatment for grinding the raw material mixture powder with a degree of impact, which provides a centrifugal effect of 15 or more, to form a precursor, and synthesizing composite oxide ceramics by heat treatment of the activated raw material mixture powder (precursor).

摘要翻译： 本发明提供一种复合氧化物陶瓷的制造方法，其能够通过包括在低温烧结的简单工艺，有效地制造杂质相少且介电特性较差的单相多组分金属氧化物陶瓷。 该方法具有以下步骤：将金属氢氧化物或含水凝胶与多种金属氧化物粉末混合以制备原料混合物粉末，通过机械化学处理活化原料混合物粉末，用于以一定程度的冲击磨碎原料混合物粉末， 其提供15以上的离心效果以形成前体，并且通过热处理活化的原料混合物粉末（前体）来合成复合氧化物陶瓷。