公开(公告)号：US06424383B1

公开(公告)日：2002-07-23

申请号：US09284876

申请日：1999-04-22

申请人： Katsumi Terai ,  Naoji Okumura ,  Yutaka Nio ,  Kazuhito Tanaka

发明人： Katsumi Terai ,  Naoji Okumura ,  Yutaka Nio ,  Kazuhito Tanaka

IPC分类号： H04N521

CPC分类号： H04N5/208

摘要： An object is to provide a vertical contour correcting device for a video signal which reduces noise without deteriorating effect of the entire contour correction. A vertical contour correcting device (VCP1) which corrects vertical contour components (S1v, S1v′) of a video signal (S1) with a given quantity of correction (K) to enhance the vertical contour (Ev) of the video signal (S1) comprises a vertical contour component extracting device (3) for detecting said vertical contour components (S1v, S1v′) from said video signal (S1), a vertical contour component correlation detector (3, 29, 8c, 8d, 4) for detecting correlation between horizontally adjacent vertical contour components (Sb, Sb′, Sb′′) from said detected vertical contour components (S1v, S1v′), and a controller (5) for determining said quantity of correction (K) on the basis of said detected correlation (Sj1), thereby varying the quantity of correction (K) in accordance with the correlation (Sj1).

摘要翻译： 一种垂直轮廓校正装置（VCP1），用于校正视频信号的垂直轮廓分量（S1v，S1v'）（垂直轮廓校正装置） S1）具有用于增强视频信号（S1）的垂直轮廓（Ev）的给定量的校正（K）包括垂直轮廓分量提取装置（3），用于从所述垂直轮廓分量（S1v，S1v'）检测所述垂直轮廓分量 视频信号（S1），用于检测来自所检测的垂直轮廓分量（S1v）的水平相邻垂直轮廓分量（Sb，Sb'，Sb“）之间的相关性的垂直轮廓分量相关检测器（3,29,8c，8d，4） ，S1v'），以及控制器（5），用于根据所述检测到的相关（Sj1）确定所述校正量（K），从而根据相关（Sj1）改变校正量（K）。

公开(公告)号：US06738528B1

公开(公告)日：2004-05-18

申请号：US09463215

申请日：2000-01-21

申请人： Yutaka Nio ,  Satoshi Okamoto ,  Katsumi Terai ,  Naoji Okumura ,  Kazuhito Tanaka

发明人： Yutaka Nio ,  Satoshi Okamoto ,  Katsumi Terai ,  Naoji Okumura ,  Kazuhito Tanaka

IPC分类号： G06K940

CPC分类号： H04N19/865 ,  H04N19/527 ,  H04N19/80 ,  H04N19/86

摘要： A vertical HPF and a horizontal HPF receive a video signal 101, and extract only a high frequency component in the vertical/horizontal directions, respectively. Absolute value taking parts take an absolute value of the high frequency components, respectively, and change their values to positive values. A horizontal accumulating/adding part and a vertical accumulating/adding part accumulate/add an input signal so as to output a vertical one-dimensional signal and a horizontal one-dimensional signal, respectively, each periodically having a peak value in the respective vertical and horizontal directions. A horizontal peak detecting part detects a horizontal peak position according to the horizontal one-dimensional signal. A vertical peak detecting part detects a vertical peak position according to the vertical one-dimensional signal and identifies a format thereof. A binarization part obtains a block boundary image, according to the horizontal peak position and the vertical peak position, in which pixel positions having a peak are provided with 1 and remaining pixel positions are provided with 0. In this manner, even if a block boundary to eliminate block noise thereon is not clearly identified, it becomes possible to correctly detect and eliminate the block boundary.

摘要翻译： 垂直HPF和水平HPF接收视频信号101，并且仅分别在垂直/水平方向提取高频分量。 绝对值取零件分别取高频分量的绝对值，并将它们的值改为正值。 水平累积/加法部分和垂直累积/相加部分分别累积/加入输入信号，以分别输出垂直一维信号和水平一维信号，每个信号周期性地具有在垂直方向上的峰值， 水平方向。 水平峰值检测部根据水平一维信号检测水平峰值位置。 垂直峰值检测部分根据垂直一维信号检测垂直峰值位置并识别其格式。 二值化部分根据水平峰值位置和垂直峰值位置获得块边界图像，其中具有峰值的像素位置为1，并且剩余像素位置被设置为0.以这种方式，即使块边界 为了消除其上的块噪声没有被清楚地识别，可以正确地检测和消除块边界。

公开(公告)号：US06429899B1

公开(公告)日：2002-08-06

申请号：US09351847

申请日：1999-07-13

申请人： Yutaka Nio ,  Naoji Okumura ,  Katsumi Terai ,  Kazuto Tanaka ,  Satoshi Okamoto ,  Masaaki Fujita ,  Minoru Miyata

发明人： Yutaka Nio ,  Naoji Okumura ,  Katsumi Terai ,  Kazuto Tanaka ,  Satoshi Okamoto ,  Masaaki Fujita ,  Minoru Miyata

IPC分类号： H04N1100

CPC分类号： G09G1/165 ,  G09G1/167 ,  G09G2310/0229 ,  H04N3/30 ,  H04N7/01 ,  H04N7/012 ,  H04N7/0125

摘要： A video signal of an interlaced scanning system having 525 scanning lines and a vertical scanning frequency of 60 Hz is converted to a video signal having 1050 scanning lines and a vertical scanning frequency of 120 Hz, for displaying an image by bidirectional scanning. A vertical synchronizing signal is subjected to offset processing by a ¼ horizontal scanning period when an odd field is started, thereby keeping interlaced relation between odd and even fields. The vertical synchronizing signal is subjected to offset processing by a ½ horizontal scanning period every frame, so that the scanning direction for each scanning line is reversed every frame.

摘要翻译： 具有525扫描线和60Hz的垂直扫描频率的隔行扫描系统的视频信号被转换为具有1050扫描线和120Hz的垂直扫描频率的视频信号，用于通过双向扫描显示图像。 当奇数场开始时，垂直同步信号经过1/4水平扫描周期的偏移处理，从而保持奇数和偶数场之间的交错关系。 垂直同步信号每帧进行1/2水平扫描周期的偏移处理，使得每帧扫描线的扫描方向反转。

公开(公告)号：US06795588B1

公开(公告)日：2004-09-21

申请号：US09628678

申请日：2000-07-28

申请人： Yutaka Nio ,  Katsumi Terai ,  Naoji Okumura ,  Kazuto Tanaka

发明人： Yutaka Nio ,  Katsumi Terai ,  Naoji Okumura ,  Kazuto Tanaka

IPC分类号： G06K940

CPC分类号： H04N1/409 ,  G06T5/002 ,  G06T2207/20192

摘要： A ringing detector detects mosquito noise and ringing for outputting an image signal smoothed by a horizontal/vertical high-pass filter when mosquito noise and ringing are detected while outputting the image signal as such when neither mosquito noise nor ringing is detected, thereby properly correcting the image signal without reducing the texture specific to the image signal also in a portion continuously exhibiting fine details.

摘要翻译： 当检测到蚊式噪声和振铃同时输出图像信号时，振铃检测器检测蚊式噪声和振铃以输出由水平/垂直高通滤波器平滑的图像信号，当既没有检测到蚊式噪声也没有振铃时，正确地校正 图像信号，而不会在连续呈现精细细节的部分中降低图像信号特有的纹理。

公开(公告)号：US5715010A

公开(公告)日：1998-02-03

申请号：US725075

申请日：1996-10-02

申请人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshichika Sato

发明人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshichika Sato

IPC分类号： H04N5/14 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N7/0122 ,  H04N5/14 ,  Y10S348/913

摘要： A video signal compression apparatus extracts a specific value written in a read only memory at every system clock pulse. The specific value can be varied at every clock pulse. Therefore, for example, only the center part of a picture can be horizontally compressed. A FIFO memory may be used. It is possible to select a mode with a fixed compression ratio or a mode in which a compression ratio varies at every clock pulse. Further, the fixed compression ratio can be set from the outside. Display position of the picture can also be changed.

摘要翻译： 视频信号压缩装置以每个系统时钟脉冲提取在只读存储器中写入的特定值。 每个时钟脉冲可以改变具体值。 因此，例如只能将图像的中央部分水平地压缩。 可以使用FIFO存储器。 可以选择具有固定压缩比的模式或压缩比在每个时钟脉冲下变化的模式。 此外，可以从外部设定固定压缩比。 图片的显示位置也可以更改。

公开(公告)号：US06529176B1

公开(公告)日：2003-03-04

申请号：US09673361

申请日：2000-10-16

申请人： Naoji Okumura ,  Hiroki Monta ,  Hideyo Uwabata ,  Yutaka Nio ,  Kazuto Tanaka ,  Yutaka Nishikawa

发明人： Naoji Okumura ,  Hiroki Monta ,  Hideyo Uwabata ,  Yutaka Nio ,  Kazuto Tanaka ,  Yutaka Nishikawa

IPC分类号： G09G108

CPC分类号： H04N5/44504 ,  H04N3/30 ,  H04N21/42653

摘要： A video signal processing circuit synthesizes a video signal and a graphic signal on the basis of a display switching control signal, inverts a synthesized signal on the time axis for each of a forward scanning period and a backward scanning period, and output a display signal. A speed modulating signal control circuit inverts the binarized display switching control signal on the time axis for each of the forward scanning period and the backward scanning period, expands the pulse width thereof, and feeds the display switching control signal to a speed modulating signal generating circuit. The speed modulating signal generating circuit subjects a display signal to first-order differentiation, inverts the polarity of a differentiated signal in the backward scanning signal, sets a portion, corresponding to the graphic signal, in the differentiated signal on the basis of the display switching control signal at a zero level, and generates a speed modulating signal.

摘要翻译： 视频信号处理电路根据显示切换控制信号合成视频信号和图形信号，在正向扫描期间和后退扫描周期中的每个正反转扫描期间对时间轴上的合成信号进行反转，并输出显示信号。 速度调制信号控制电路在正向扫描周期和反向扫描期间中的每一个上对时间轴上的二值化显示切换控制信号进行反转，扩大其脉冲宽度，并将显示切换控制信号馈送到速度调制信号发生电路 。 速度调制信号发生电路对显示信号进行一阶微分，使反向扫描信号中的微分信号的极性反转，根据显示切换在微分信号中设定与图形信号对应的部分 控制信号为零电平，并产生速度调制信号。

公开(公告)号：US5760837A

公开(公告)日：1998-06-02

申请号：US720678

申请日：1996-10-02

申请人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshichika Sato

发明人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshichika Sato

IPC分类号： H04N5/14 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N7/0122 ,  H04N5/14 ,  Y10S348/913

摘要： A video signal compression apparatus extracts a specific value written in a read only memory at every system clock pulse. The specific value can be varied at every clock pulse. Therefore, for example, only the center cart of a picture can be horizontally compressed A FIFO memory may be used. It is possible to select a mode with a fixed compression ratio or a mode in which a compression ratio varies at every clock pulse. Further, the fixed compression ratio can be set from the outside. Display position or the picture can also be changed.

摘要翻译： 视频信号压缩装置以每个系统时钟脉冲提取在只读存储器中写入的特定值。 每个时钟脉冲可以改变具体值。 因此，例如，只能将图像的中央推车水平压缩。可以使用FIFO存储器。 可以选择具有固定压缩比的模式或压缩比在每个时钟脉冲下变化的模式。 此外，可以从外部设定固定压缩比。 显示位置或图片也可以更改。

公开(公告)号：US5666165A

公开(公告)日：1997-09-09

申请号：US361634

申请日：1994-12-22

申请人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshiohika Sato

发明人： Yosuke Izawa ,  Masahiro Tani ,  Naoji Okumura ,  Yutaka Nio ,  Toshiohika Sato

IPC分类号： H04N5/14 ,  H04N5/44 ,  H04N7/01 ,  H04N5/262

CPC分类号： H04N7/0122 ,  H04N5/14 ,  Y10S348/913

摘要： A video signal compression apparatus extracts a specific value written in a read only memory at every system clock pulse. The specific value can be varied at every clock pulse. Therefore, for example, only the center part of a picture can be horizontally compressed. A FIFO memory may be used. It is possible to select a mode with a fixed compression ratio or a mode in which a compression ratio varies at every clock pulse. Further, the fixed compression ratio can be set from the outside. Display position of the picture can also be changed.

公开(公告)号：US6020927A

公开(公告)日：2000-02-01

申请号：US95615

申请日：1998-06-10

申请人： Kazuhito Tanaka ,  Yutaka Nio

发明人： Kazuhito Tanaka ,  Yutaka Nio

IPC分类号： H04N7/01

CPC分类号： H04N7/0125

摘要： A video signal converter converts a first video signal into a second video signal by changing the number of scanning lines. A horizontal pulse synchronized with the first video signal is fed into a PLL circuit, which generates a first clock signal synchronized with the horizontal pulse. The first video signal undergoes A/D conversion by sampling with the first clock signal. The converter receives a first digital video signal which has undergone the A/D conversion, the first clock signal, the horizontal pulse, and a vertical pulse synchronized with the first video signal, and thus changes a number of scanning lines of the first video signal. The converter, next, writes a second digital video signal into a memory by synchronizing the first clock signal. Then, the second digital video signal is read out from the memory by synchronizing a second clock signal generated from another clock signal generator, and is outputted as a third digital video signal, which is converted by a D/A converter into a second video signal having a desirable number of scanning lines and being outputted without video distortion in the horizontal direction.

摘要翻译： 视频信号转换器通过改变扫描行数将第一视频信号转换成第二视频信号。 与第一视频信号同步的水平脉冲被馈送到PLL电路，其产生与水平脉冲同步的第一时钟信号。 第一个视频信号通过采用第一个时钟信号进行A / D转换。 转换器接收经过A / D转换的第一数字视频信号，第一时钟信号，水平脉冲和与第一视频信号同步的垂直脉冲，从而改变第一视频信号的扫描行数 。 接下来，转换器通过同步第一时钟信号将第二数字视频信号写入存储器。 然后，通过同步由另一时钟信号发生器产生的第二时钟信号从存储器中读出第二数字视频信号，并将其作为第三数字视频信号输出，该第三数字视频信号由D / A转换器转换成第二视频信号 具有期望数量的扫描线，并且在水平方向上输出没有视频失真。

公开(公告)号：US07394854B2

公开(公告)日：2008-07-01

申请号：US10088468

申请日：2001-07-23

申请人： Toshiro Nishio ,  Yutaka Nio

发明人： Toshiro Nishio ,  Yutaka Nio

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/00533 ,  H04N11/042 ,  H04N19/44

摘要： A signal transmission system: that includes a signal transmission unit (101) that includes a MPEG decoder (102), which receives digital broadcasting and outputs a luminance signal Y and two color difference signals PB/PR, and a transmission path encoding circuit (103), which encodes the YPBPR outputted from the MPEG decoder (102) into signals in the forms suited to a transmission path and transmits the encoded signals; and a signal reception unit (104) that includes a transmission path decoding circuit (105), which receives the encoded YPBPR and decodes them, a Y processing circuit (106), which processes the decoded luminance signal Y, a chrominance processing circuit (107), which processes the respective decoded color difference signals PB/PR, a signal conversion circuit (108), which converts the YPBPR outputted from the Y processing circuit (106) and the chrominance processing circuit (107) into RGB signals, and a display device (108) which displays the RGB signals.

摘要翻译： 一种信号传输系统，包括：信号传输单元（101），包括MPEG解码器（102），其接收数字广播并输出亮度信号Y和两个色差信号P SUB B / 和传送路径编码电路（103），其将从MPEG解码器（102）输出的YP SUB B R SUB编码为信号 适合于传输路径并发送编码信号的形式; 以及信号接收单元（104），其包括传输路径解码电路（105），该传输路径解码电路（105）接收编码的YP＆lt; B＆gt; P＆lt; R＆gt;并对其进行解码，Y处理电路 106），其处理解码的亮度信号Y，处理各个解码的色差信号P SUB B / P SUB R的色度处理电路（107），信号转换 电路（108）将从Y处理电路（106）和色度处理电路（107）输出的YP _{B R SUB转换成RGB信号，显示 显示RGB信号的装置（108）。}