公开(公告)号：US5365274A

公开(公告)日：1994-11-15

申请号：US61704

申请日：1993-05-13

申请人： Yoshio Seki ,  Masaki Tokoi ,  Atsushi Ishizu ,  Yoichiro Miki

发明人： Yoshio Seki ,  Masaki Tokoi ,  Atsushi Ishizu ,  Yoichiro Miki

IPC分类号： H04N7/01

CPC分类号： H04N7/0125

摘要： A video signal conversion apparatus for converting high definition television signals band-width compressed by offset sub-sampling to a conventional standard television signal while removing aliasing interference caused by offset sub-sampling and using less memory capacity than is conventionally required is provided. The image of the sub-sampled signal is restored from the sampling points in the current field by an intra-field interpolation circuit, and the number of scan lines is reduced to the same number in the standard television signal format by a scan line number conversion circuit. Half of the pixels in the current field are then substituted into the signal for the one previous frame for inter-frame interpolation by a signal selector which alternately selects a signal from the scan line number conversion circuit and a signal from field memories, and a time-base operation for removing aliasing interference at the standard television signal rate is executed.

摘要翻译： 提供了一种视频信号转换装置，用于将通过偏移次采样压缩的高清晰度电视信号转换为传统标准电视信号，同时消除由偏移次采样引起的混叠干扰并且使用比传统所需的更少的存储器容量。 子采样信号的图像由场内插入电路从当前场中的采样点恢复，并且通过扫描线数转换将扫描线的数量减少到标准电视信号格式的相同数量 电路。 当前字段中的一半像素被替换为前一帧的信号，用于通过交替地选择来自扫描行号码转换电路的信号和来自场存储器的信号的信号选择器进行帧间插值，并且时间 执行用于以标准电视信号速率去除混叠干扰的基地操作。

公开(公告)号：US5327241A

公开(公告)日：1994-07-05

申请号：US915551

申请日：1992-07-20

申请人： Atsushi Ishizu ,  Masaki Tokoi ,  Yoshio Seki

发明人： Atsushi Ishizu ,  Masaki Tokoi ,  Yoshio Seki

IPC分类号： H04N7/015 ,  H04N5/213

CPC分类号： H04N7/0152

摘要： In a video signal processing apparatus for restoring a signal which has been bandwidth-compressed by offset sub-sampling after restoring an image from sample points of a same field of a sub-sampled signal, a first adder performs an inter-field averaging process from inter-field signals before or after three adjacent fields. A second adder performs an inter-frame averaging process from inter-frame signals. One field difference and one frame difference are detected from the three adjacent inter-field signals thereby switching an output signal of the first adder and an output signal of the second adder in accordance with the magnitudes of the differences thus detected. In this way, aliasing interferences accompanied with bandwidth compression can be detected. By selecting an optimum eliminating filter, aliasing interference due to interfield sub-sampling and aliasing interference due to inter-frame sub-sampling can be eliminated.

摘要翻译： 在一个视频信号处理装置中，从副采样信号的相同场的采样点恢复图像之后，通过偏移副采样来恢复被带宽压缩的信号，第一加法器执行场间平均处理， 三个相邻场之前或之后的场间信号。 第二加法器从帧间信号执行帧间平均处理。 从三个相邻的场间信号中检测一个场差和一个帧差，从而根据所检测的差的大小切换第一加法器的输出信号和第二加法器的输出信号。 以这种方式，可以检测伴随带宽压缩的混叠干扰。 通过选择最佳消除滤波器，可以消除由于场间子采样引起的混叠干扰和由于帧间子采样引起的混叠干扰。

公开(公告)号：US5311297A

公开(公告)日：1994-05-10

申请号：US709234

申请日：1991-06-03

申请人： Yoshio Seki ,  Atsushi Ishizu ,  Masaki Tokoi

发明人： Yoshio Seki ,  Atsushi Ishizu ,  Masaki Tokoi

IPC分类号： H04N5/202 ,  H04N7/01 ,  H04N7/015 ,  H04N9/64 ,  H04N9/69

CPC分类号： H04N7/0152 ,  H04N5/202 ,  H04N7/0125 ,  H04N9/642 ,  H04N9/69

摘要： A television signal converting apparatus receives a high definition television signal which is processed approximately linearly on the transmission and receiving sides and whose transmission only is processed non-linearly. A non-linear level correction circuit is provided, which collectively simultaneously carries out two kinds of non-linear processes, namely, a transmission inverse gamma correction and a CRT gamma correction, which are executed on the transmission side, thus precisely reproducing the signal level of a luminance signal by using a small-scale circuit.

摘要翻译： 电视信号转换装置接收在发送和接收侧近似线性处理的高清晰度电视信号，并且其传输仅被非线性处理。 提供了一种非线性电平校正电路，它们共同同时执行在发送侧执行的两种非线性处理，即发送反伽马校正和CRT伽马校正，从而精确地再现信号电平 通过使用小规模电路的亮度信号。

公开(公告)号：US5168358A

公开(公告)日：1992-12-01

申请号：US712034

申请日：1991-06-07

申请人： Atsushi Ishizu ,  Yoshio Seki ,  Masaki Tokoi

发明人： Atsushi Ishizu ,  Yoshio Seki ,  Masaki Tokoi

IPC分类号： H04N7/01 ,  H04N7/015

CPC分类号： H04N7/0152 ,  H04N7/0125

摘要： A video signal converting apparatus includes: an interpolating circuit for interpolating a non-sampling point from sampling points in a field for restoring an HDTV band-compressed by offset sub-sampling; a first delay element for delaying the interpolated signal by one field period and a second delay element for delaying an output of the first delay element by one field; a median-value selector for selecting a median-value signal from signals in three adjacent fields from the input and output of the two delay elements, and an adder for averaging the output of the first delay element and an output of the median-value selector. Alternatively, the first and second delay elements maybe disposed before the interpolating circuit rather than after the interpolating circuit. Furthermore, a time-access conversion circuit maybe disposed either before the interpolating circuit or after the adder.

公开(公告)号：US5155582A

公开(公告)日：1992-10-13

申请号：US559066

申请日：1990-07-30

申请人： Masaki Tokoi ,  Atsushi Ishizu ,  Kiyoshi Imai

发明人： Masaki Tokoi ,  Atsushi Ishizu ,  Kiyoshi Imai

IPC分类号： H04N9/64 ,  H04N9/79

CPC分类号： H04N9/646 ,  H04N9/7908

摘要： A dot crawling interference elimination device and a color subcarrier vertical correlation detection device, which comprise a color subcarrier vertical correlation detection device for a video signal, an adaptive three-dimensional Y/C separation unit, and an adaptive notch filter of a color signal band, detect vertical correlation of a color subcarrier in a non-standard signal, such as a signal reproduced from a home VCRs or a special signal reproduced from an optical VDP system, that does not strictly meet the standards of the NTSC system or the PAL system, thereby to discriminate non-standard characteristics of the signal, and eliminate a color signal component, which mixes into a luminance signal when a motion-adaptive Y/C separation is carried out for the non-standard signal, by using an adaptive notch filter that suits a non-standard state of the input image signal.

公开(公告)号：US5867228A

公开(公告)日：1999-02-02

申请号：US611666

申请日：1996-03-06

申请人： Yoichiro Miki ,  Masanori Hamada ,  Atsushi Ishizu ,  Masatoshi Nakano

发明人： Yoichiro Miki ,  Masanori Hamada ,  Atsushi Ishizu ,  Masatoshi Nakano

IPC分类号： H04N5/21 ,  H04N9/64 ,  H04N5/213

CPC分类号： H04N5/21 ,  H04N9/646

摘要： In a noise reducer whose S/N improving amount is variable, as to such a region where image quality deterioration caused by the noise reducer becomes relatively apparent, and both a luminance level and a chroma level are low, the S/N improving amount thereof is decreased. To the contrary, as to such a picture having a dark high frequency range component and a small movement component, no control is made of the S/N improving amount by the above-described luminance level and chroma level, but the normal S/N improvement is sufficiently carried out.

公开(公告)号：US6094233A

公开(公告)日：2000-07-25

申请号：US905155

申请日：1997-08-01

申请人： Yoichiro Miki ,  Masanori Hamada ,  Atsushi Ishizu ,  Masatoshi Nakano

发明人： Yoichiro Miki ,  Masanori Hamada ,  Atsushi Ishizu ,  Masatoshi Nakano

IPC分类号： H04N5/21 ,  H04N9/64 ,  H04N5/213

CPC分类号： H04N5/21 ,  H04N9/646

摘要： In a noise reducer whose S/N improving amount is variable, as to such a region where image quality deterioration caused by the noise reducer becomes relatively apparent, and both a luminance level and a chroma level are low, the S/N improving amount thereof is decreased. To the contrary, as to such a picture having a dark high frequency range component and a small movement component, no control is made of the S/N improving amount by the above-described luminance level and chroma level, but the normal S/N improvement is sufficiently carried out.

摘要翻译： 在S / N改善量可变的降噪器中，对于由降噪器引起的图像质量劣化的区域变得相对明显，并且亮度水平和色度水平都低的S / N改善量 减少。 相反，对于具有暗的高频范围分量和小的移动分量的这种图像，不能通过上述亮度级和色度水平来控制S / N改善量，而是通常的S / N 充分进行改善。

公开(公告)号：US06337715B1

公开(公告)日：2002-01-08

申请号：US09109182

申请日：1998-07-02

申请人： Satoru Inagaki ,  Atsushi Ishizu ,  Tetsuji Maeda ,  Shuuhei Taniguchi ,  Yutaka Nio ,  Etsuyoshi Sakaguchi ,  Kenjirou Tsuda

发明人： Satoru Inagaki ,  Atsushi Ishizu ,  Tetsuji Maeda ,  Shuuhei Taniguchi ,  Yutaka Nio ,  Etsuyoshi Sakaguchi ,  Kenjirou Tsuda

IPC分类号： H04N710

CPC分类号： H04N21/4384 ,  H04N5/4401 ,  H04N5/44543 ,  H04N5/45 ,  H04N5/46 ,  H04N21/42204 ,  H04N21/4314 ,  H04N21/435 ,  H04N21/44222 ,  H04N21/4532 ,  H04N21/4821 ,  H04N21/8193 ,  H04N21/84

摘要： A broadcasting reception apparatus includes a display unit for presenting a display showing a plurality of channels, with which the user can recognize whether decoding software programs for decoding program signals being currently broadcast via each channel are held in a library buffer, or not, thereby making possible pleasant zapping.

摘要翻译： 广播接收装置包括显示单元，用于呈现显示多个频道的显示器，用户可以通过该显示单元识别用于将当前经由每个频道广播的节目信号解码的解码软件程序是否被保存在库缓冲器中，从而使得 可能愉快的打盹。

公开(公告)号：US5982449A

公开(公告)日：1999-11-09

申请号：US780253

申请日：1997-01-08

申请人： Miho Nagai ,  Takashi Yamaguchi ,  Yutaka Nio ,  Hideto Nakahigashi ,  Hideyo Uwabata ,  Toshiaki Kitahara ,  Chikara Gotanda ,  Atsushi Ishizu

发明人： Miho Nagai ,  Takashi Yamaguchi ,  Yutaka Nio ,  Hideto Nakahigashi ,  Hideyo Uwabata ,  Toshiaki Kitahara ,  Chikara Gotanda ,  Atsushi Ishizu

IPC分类号： H04N3/27 ,  H04N3/32 ,  H04N5/20 ,  H04N5/202 ,  H04N5/44 ,  H04N5/445 ,  H04N5/46 ,  H04N5/14

CPC分类号： H04N5/20 ,  H04N3/27 ,  H04N3/32 ,  H04N5/44 ,  H04N5/202 ,  H04N5/445 ,  H04N5/46

摘要： A television receiver comprising an information extracting circuit for extracting information from a format or content of an input video signal, a video signal processing circuit for processing this video signal by a program or data, a memory for storing the program and data, a CPU for controlling, operating or driving these elements, and a display device for displaying an image. The video signal processing circuit can, under the control of the CPU, decode the signal, correct or set the picture quality such as gradation and sharpness, or adaptively process an on-screen display based on the input video signal. The television receiver is also able to adaptively extend the functions of the television receiver corresponding to various signal formats.

摘要翻译： 一种电视接收机，包括：用于从输入视频信号的格式或内容中提取信息的信息提取电路，用于通过程序或数据处理该视频信号的视频信号处理电路，用于存储程序和数据的存储器，用于存储程序和数据的存储器 控制，操作或驱动这些元件，以及用于显示图像的显示装置。 视频信号处理电路可以在CPU的控制下对信号进行解码，校正或设置诸如灰度和清晰度的图像质量，或者基于输入视频信号自适应地处理屏幕显示。 电视接收机还能够自适应地扩展对应于各种信号格式的电视接收机的功能。

公开(公告)号：US5146317A

公开(公告)日：1992-09-08

申请号：US562858

申请日：1990-08-03

申请人： Atsushi Ishizu ,  Kenta Sokawa ,  Kiyoshi Imai

发明人： Atsushi Ishizu ,  Kenta Sokawa ,  Kiyoshi Imai

IPC分类号： H04N9/78

CPC分类号： H04N9/78

摘要： In the NTSC color television system, a signal having a medium level in the three signals of the bands the color sub-carrier frequency of neighboring three scanning lines is substracted from the signal of the central scanning line of the three scanning lines, the resultant signal is a luminance signal containing no cross luminance, even if the composite video signal in the three scanning lines does not maintain vertical correlation.

摘要翻译： 在NTSC彩色电视系统中，从三条扫描线的中央扫描线的信号中减去相邻三条扫描线的彩色副载波频率的频带三个信号中的中等电平的信号，得到的信号 即使三条扫描线中的复合视频信号不保持垂直相关，也不含有交叉亮度的亮度信号。