公开(公告)号：US5831684A

公开(公告)日：1998-11-03

申请号：US657643

申请日：1996-05-30

申请人： Tomoko Morita ,  Naoji Okumura ,  Masahiro Tani

发明人： Tomoko Morita ,  Naoji Okumura ,  Masahiro Tani

IPC分类号： H04N5/45

CPC分类号： H04N5/45

摘要： A subpicture image signal vertical compression circuit for vertically compressing subpictures operating at respective synchronous timings different from that of the main picture when a plurality of image signals having respectively different synchronizations are displayed on an image display device. Depending on whether the field polarities of main and sub pictures are the same or not, the subpicture image signal vertical compression circuit generates suitable offsets for the first and the second fields to adjust the phases and prevent the inversion of the scan order in the vertical direction, at the first field and the second field of subpicture signal, after the phase adjustment to obtain a subpicture image with natural motion in the vertical direction.

摘要翻译： 一种副图像图像信号垂直压缩电路，用于当在图像显示装置上显示具有不同同步的多个图像信号时，垂直压缩在与主图像不同的同步定时工作的子图像。 根据主图像和副图像的场极性是否相同，子画面图像信号垂直压缩电路产生用于第一和第二场的适当偏移量以调整相位并防止垂直方向上的扫描顺序的反转 在第一场和第二场子画面信号之后，进行相位调整，以在垂直方向上获得具有自然运动的子画面图像。

公开(公告)号：US5686970A

公开(公告)日：1997-11-11

申请号：US569278

申请日：1995-12-08

申请人： Masahiro Tani ,  Naoji Okumura

发明人： Masahiro Tani ,  Naoji Okumura

IPC分类号： H04N5/44 ,  H04N5/46

CPC分类号： H04N7/0122 ,  Y10S348/913

摘要： A high precision aspect ratio auto-discrimination apparatus used for display apparatuses and television receivers comprising: an apparatus for detecting the upper edge and lower edge of a letter box picture through detecting the average luminance of every horizontal scan period; an apparatus for detecting respective average luminance levels in a plurality of specific regions in one field picture controlled by a horizontal synchronous signal and a vertical synchronous signal; and, an aspect ratio discrimination section to which the outputs of said both apparatuses are input.

摘要翻译： 一种用于显示装置和电视接收机的高精度纵横比自动识别装置，包括：检测每个水平扫描周期的平均亮度的用于检测信箱图像的上边缘和下边缘的装置; 用于检测由水平同步信号和垂直同步信号控制的一个场图像中的多个特定区域中的各个平均亮度水平的装置; 以及输入所述两个装置的输出的宽高比判别部。

公开(公告)号：US5270815A

公开(公告)日：1993-12-14

申请号：US791225

申请日：1991-11-13

申请人： Naoji Okumura ,  Hirohiko Sakashita

发明人： Naoji Okumura ,  Hirohiko Sakashita

IPC分类号： H04N5/262 ,  H04N7/01

CPC分类号： H04N7/0122

摘要： Input analog image signals are converted to digital image signals and applied to a demodulation circuit and a synchronous circuit. In the demodulation circuit, the digital image signals are demodulated and then compressed by a compression circuit. In the synchronous circuit, the digital image signals are synchronously processed so as to output horizontal pulses in accordance with a horizontal synchronizing signal contained in the digital image signals and so as to output phase difference information denoting a timing difference between the output of a horizontal pulse and an interpolated crossing of the horizontal synchronizing signal across a synchronizing threshold. A boundary at an image portion and a mask portion of an output image signal is corrected so that the boundary is substantially free of jitter using the horizontal pulses and the phase difference information output by the synchronous circuit. In this manner, a smooth boundary is obtained at the image portion and mask portion of the final compressed image.

公开(公告)号：US06912015B1

公开(公告)日：2005-06-28

申请号：US09719397

申请日：1999-06-07

申请人： Hideyo Uwabata ,  Katsumi Terai ,  Minoru Miyata ,  Toshiaki Kitahara ,  Naoji Okumura ,  Kazuto Tanaka

发明人： Hideyo Uwabata ,  Katsumi Terai ,  Minoru Miyata ,  Toshiaki Kitahara ,  Naoji Okumura ,  Kazuto Tanaka

IPC分类号： G09G1/00 ,  H04N3/30 ,  H04N3/32 ,  H04N5/44

CPC分类号： H04N3/30 ,  H04N3/32

摘要： A parallel scanning circuit outputs a parallel scanning signal for making forward and backward scanning lines parallel. A vertical correlation detection circuit detects a portion where the change in luminance in the vertical direction exceeds a predetermined value on the basis of a luminance signal, and outputs a movement control signal representing the distance of movement on the screen of the scanning line. A retrace period reversion circuit reverses the lime axis of the movement control signal in a retrace period. A clamping circuit clamps the movement control signal to a predetermined DC voltage at the timing of horizontal synchronizing signal. A synthesizing circuit synthesizes the parallel scanning signal and the movement control signal, and feeds a synthesized signal as a vertical velocity modulation signal to a vertical velocity modulation coil.

摘要翻译： 并行扫描电路输出用于使前后扫描线平行的并行扫描信号。 垂直相关检测电路基于亮度信号检测垂直方向的亮度变化超过预定值的部分，并且在扫描线的屏幕上输出表示移动距离的移动控制信号。 回扫周期反转电路在回扫期间反转运动控制信号的石灰轴。 钳位电路在水平同步信号的定时将移动控制信号钳位到预定的DC电压。 合成电路合成并行扫描信号和移动控制信号，并将合成信号作为垂直速度调制信号馈送到垂直速度调制线圈。

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：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：US5500682A

公开(公告)日：1996-03-19

申请号：US386134

申请日：1995-02-06

申请人： Kouichirou Fue ,  Yosuke Izawa ,  Naoji Okumura

发明人： Kouichirou Fue ,  Yosuke Izawa ,  Naoji Okumura

IPC分类号： H04N5/907 ,  H04N5/95

CPC分类号： H04N5/907 ,  H04N5/95

摘要： The invention relates to a video signal memory equipment comprising a FIFO memory for storing video data of video signals, and a control unit for controlling writing and reading in the FIFO memory, wherein the control unit receives a horizontal synchronizing signal of video signal in video data writing action, writes a specified number of video data from the beginning of video data of brightness signals of the horizontal scanning period sequentially into the FIFO memory, and reads out the specified number of video data upon every input of horizontal synchronizing signal, in video data reading action, in the written sequence as video data of that horizontal scanning period, thereby storing and producing the video data of video signals, whereby video data of each horizontal scanning period of video signals are continuously written into the FIFO memory by every specified number of pieces from the beginning, and are read out by every specified number of pieces upon every input of horizontal synchronizing signal, and hence the video data of video signals can be read out by dividing in every horizontal scanning period, and therefore the address generating device for dividing the data in every horizontal scanning period is not needed in this video signal memory equipment.

摘要翻译： 本发明涉及一种包括用于存储视频信号的视频数据的FIFO存储器和用于控制FIFO存储器中的写入和读取的控制单元的视频信号存储设备，其中控制单元接收视频数据中的视频信号的水平同步信号 写入动作，将从水平扫描周期的亮度信号的视频数据的开头开始的指定数量的视频数据顺序写入FIFO存储器，并且在视频数据中每次输入水平同步信号时读出指定数量的视频数据 读取动作，作为该水平扫描期间的视频数据，从而存储和产生视频信号的视频数据，由此每个指定数量的视频信号的每个水平扫描周期的视频数据被连续地写入FIFO存储器 从一开始就开始，每次在每次投入的时候都会读出每个指定的数量 l同步信号，因此可以通过在每个水平扫描周期中除以来读出视频信号的视频数据，因此在该视频信号存储设备中不需要用于在每个水平扫描周期中划分数据的地址产生装置。

公开(公告)号：US5296941A

公开(公告)日：1994-03-22

申请号：US992646

申请日：1992-12-18

申请人： Yosuke Izawa ,  Naoji Okumura

发明人： Yosuke Izawa ,  Naoji Okumura

IPC分类号： G09G5/00 ,  G09G5/10 ,  H04N5/20 ,  H04N5/66 ,  H04N1/40

CPC分类号： H04N5/20

摘要： A level of an input luminance signal for a pixel is compared with step values which change stepwise in level in a predetermined range of level, and distribution of the levels of the input luminance signal in the predetermined range of level is represented by a cumulative histogram. Subsequently, a histogram value is derived from the outline of the cumulative histogram, and a compensation value is produced on the basis of the histogram value, and the compensation value is added to the input luminance signal, and hence a compensated luminance signal is output to control the luminance of a video image.

摘要翻译： 将像素的输入亮度信号的电平与在预定电平范围内逐级变化的阶跃值进行比较，并且在预定范围内的输入亮度信号的电平分布由累积直方图表示。 随后，从累积直方图的轮廓导出直方图值，并且基于直方图值产生补偿值，并将补偿值加到输入亮度信号上，因此补偿亮度信号被输出到 控制视频图像的亮度。

公开(公告)号：US5231477A

公开(公告)日：1993-07-27

申请号：US700855

申请日：1991-05-16

申请人： Naoji Okumura ,  Hirohiko Sakashita

发明人： Naoji Okumura ,  Hirohiko Sakashita

IPC分类号： H03H15/00 ,  H04N9/78

CPC分类号： H04N9/78

摘要： A comb filter serves to process an input digital video signal which is derived from an analog video signal by a analog-to-digital conversion including a sampling process responsive to a system clock signal. The comb filter includes a separating device for separating the input video signal into a plurality of video signals which are offset with each other in timing and which have a clock rate equal to 1/N times a clock rate of the system clock signal where N denotes a predetermined natural number greater than 1. A first delaying device serves to delay a first output signal of the separating device. A chroma signal processor separates a first chroma signal in response to the first output signal of the separating device and an output signal of the first delaying device. A first subtracter serves to subtract the first chroma signal from the output signal of the first delaying device. A second delaying device serves to delay a second output signal of the separating device. An interpolating device serves to interpolate the first chroma signal into a second chroma signal to compensate for a difference in timing between the output signal of the second delaying device and the first chroma signal. A second subtracter serves to subtract the second chroma signal from the output signal of the second delaying device. A combining device serves to combine an output signal of the first subtracter and an output signal of the second subtracter into a luminance signal.

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。