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公开(公告)号：US6091460A
公开(公告)日：2000-07-18
申请号：US948589
申请日：1997-10-10
申请人： Yoshiko Hatano , Tadashi Kasezawa , Koji Okazaki , Takashi Shinohara , Hiromu Hasegawa , Hidetoshi Mishima
发明人： Yoshiko Hatano , Tadashi Kasezawa , Koji Okazaki , Takashi Shinohara , Hiromu Hasegawa , Hidetoshi Mishima
CPC分类号： H04N19/105 , H04N19/107 , H04N19/112 , H04N19/137 , H04N19/142 , H04N19/179 , H04N19/51 , H04N19/57 , H04N19/577 , H04N19/87 , H04N5/145
摘要： In an image signal encoding method for encoding an image signal using motion compensation, a motion vector is found by means of a block matching method, a first distortion SEmc of motion compensated prediction associated with the motion vector, and a second distortion SEnomc of prediction without motion compensation are detected, the motion vector is used for for inter-picture prediction encoding when SEnomc>SEmc+K, with K being a constant greater than 0, and a vector having a value zero is used, in place of the motion vector, for inter-picture prediction encoding when SEnomc.ltoreq.SEmc+K. In another aspect, a speed of motion in a sequence of pictures is detected, and for a part of the sequence of pictures detected to contain a quick motion, the prediction encoding is performed using one-way prediction encoding, and for a part of the sequence of pictures without a quick motion, prediction encoding is performed using bi-directional prediction encoding. In another aspect, the image signal is subsampled for each field, and a motion vector is determined using the field-subsampled image signal.
摘要翻译： 在用于使用运动补偿对图像信号进行编码的图像信号编码方法中，通过块匹配方法，与运动矢量相关联的运动补偿预测的第一失真SEmc以及无运动补偿预测的第二失真SEnomc，找到运动矢量 检测到运动补偿时，运动矢量用于SEnomc> SEmc + K时的画面间预测编码，其中K为大于0的常数，使用值为零的矢量代替运动矢量， 用于当SEnomc
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12.发明授权
公开(公告)号：US5949953A
公开(公告)日：1999-09-07
申请号：US887929
申请日：1997-07-03
IPC分类号： G11B7/0037 , G11B20/10 , G11B20/12 , G11B27/036 , G11B27/10 , G11B27/11 , G11B27/28 , G11B27/30 , G11B27/32 , H04N5/85 , H04N9/804 , H04N9/82 , H04N9/87 , H04N5/91
CPC分类号： H04N9/8042 , G11B20/1217 , G11B27/036 , G11B27/105 , G11B27/11 , G11B27/28 , G11B27/3027 , G11B27/324 , G11B27/326 , G11B27/329 , G11B20/10 , G11B2220/20 , G11B2220/2545 , G11B2220/65 , G11B7/0037 , H04N5/85 , H04N9/8205 , H04N9/87
摘要： In a video disk recording/playback device for converting a digital video signal or the like into high-efficiency coded data and recording the coded data on a video disk, or for restoring high-efficiency coded data recorded on the video disk and reproducing an output image, wherein said digital video signal is composed of a succession of video signals of a plurality of frames and including an I picture encoded within a frame, a P picture interframe coded by forward motion compensation with reference to said I picture and/or another P picture, and a B picture interframe coded by motion compensation in both directions with reference to said I and/or P pictures temporally preceding and succeeding the B picture, there are further provided a means for recording in an image information table set up on said video disk all of the start addresses of coded data representing selected images such as images to be retrieved and the start addresses of data containing information required for reproducing the coded data. With the above configuration, retrieval of all kinds of images of I, P, and B pictures is possible by recording all of the start addresses of coded data representing selected images such as images to be retrieved and the start addresses of data containing information required for reproducing the coded data in the image information table on the video disk.
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公开(公告)号：US07092575B2
公开(公告)日：2006-08-15
申请号：US09758155
申请日：2001-01-12
CPC分类号： H04N19/177 , H04N19/114 , H04N19/503 , H04N19/61
摘要： An encoding preprocessing part 1 extracts the amount of image feature relative to image data and passes the amount of image feature to a control part 2 as image feature amount information 11 and also sends image data 10 to an encoding part 3. The control part 2 determines whether there is a dissolve image or not based on the image feature amount information 11 and if it is determined that the image data 10 is the dissolve image, an encoding parameter 12 is set so that a configuration of GOP which is normally M=3 is changed into the configuration of GOP of M=2, and the encoding part 3 performs encoding based on the encoding parameter 12. As a result of that, a prediction error of a B-picture frame in a dissolve interval becomes substantially zero and on encoding in the dissolve interval, the amount of information occurrence in frames except I-picture and P-picture frames can be reduced and thus the amount of information occurrence as a whole can be reduced.
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公开(公告)号：US06574370B1
公开(公告)日：2003-06-03
申请号：US09463596
申请日：2000-01-28
IPC分类号： G06K936
CPC分类号： H04N19/51 , H04N19/527 , H04N19/56
摘要： An image encoding system according to this invention comprises: a global motion detecting unit for detecting a motion of the whole picture screen between a reduction image of a present frame and a reduction image of a reference frame and for outputting global motion information; and an image encoding unit for performing a motion detection within a peripheral narrow retrieving range on the basis of the global motion information and for encoding an image by using a motion compensation prediction. As a result, an amount of arithmetic operation in the motion detection of the image encoding unit can be reduced.
摘要翻译： 根据本发明的图像编码系统包括：全局运动检测单元，用于检测当前帧的缩小图像和参考帧的缩小图像之间的整个画面的运动，并用于输出全局运动信息; 以及图像编码单元，用于根据全局运动信息在外围窄检索范围内执行运动检测，并且通过使用运动补偿预测来对图像进行编码。 结果，可以减少图像编码单元的运动检测中的算术运算量。
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15.发明授权Image signal correction circuit and image signal processor using the circuit 失效图像信号校正电路和图像信号处理器采用该电路
公开(公告)号：US5249037A
公开(公告)日：1993-09-28
申请号：US360227
申请日：1989-06-01
申请人： Masato Sugiyama , Isao Nakagawa , Shigeru Hirahata , Toshinori Murata , Ikuya Arai , Kazuhiro Kaizaki , Tadashi Kasezawa , Noriyuki Yamaguchi , Takuzi Kurashita , Masaharu Yao
发明人： Masato Sugiyama , Isao Nakagawa , Shigeru Hirahata , Toshinori Murata , Ikuya Arai , Kazuhiro Kaizaki , Tadashi Kasezawa , Noriyuki Yamaguchi , Takuzi Kurashita , Masaharu Yao
摘要： In a motion-adaptive television signal processor, a field as a reference for a moving picture signal includes a signal delayed by a frame memory or a field memory. A non-standard signal is beforehand processed so as to separate Y and C signals, and the signal thus processed is input to a motion-adaptive processor to thereby reduce a deviation in center of gravity between a still picture signal and a moving picture signal on the timebase to thereby suppress unnatural motion of the picture.
摘要翻译： 在运动自适应电视信号处理器中，作为运动图像信号的参考的场包括由帧存储器或场存储器延迟的信号。 预先对非标准信号进行处理，以分离Y和C信号，将这样处理的信号输入到运动自适应处理器，从而减少静止图像信号和运动图像信号之间的重心偏差 时基，从而抑制图片的不自然的运动。
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公开(公告)号：US06380981B1
公开(公告)日：2002-04-30
申请号：US09365713
申请日：1999-08-03
IPC分类号： H04N9475
CPC分类号： H04N5/0736 , H04N5/04 , H04N5/147 , H04N5/4401 , H04N21/4305 , H04N21/4307 , H04N21/4341
摘要： The frame synchronizer outputs, when reading out each of the video signals stored in a plurality of frame memories provided in a frame synchronizing circuit one by one, a read control signal from a video signal read control circuit for controlling the frame synchronizing circuit in such a manner as to read out a video signal of a frame other than that of a target frame which was to be read out otherwise, in case the input/output frame phase difference output from an input/output frame phase difference detecter comes up to an amount of one frame.
摘要翻译： 帧同步器在逐帧读取存储在帧同步电路中的多个帧存储器中的每个视频信号时，输出来自用于控制帧同步电路的视频信号读取控制电路的读取控制信号 在从输入/输出帧相位差检测器输出的输入/输出帧相位差达到数量的情况下，读出除了要另外读出的目标帧的帧的视频信号的方式 一帧。
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公开(公告)号：US06510179B1
公开(公告)日：2003-01-21
申请号：US09453404
申请日：1999-12-03
IPC分类号： H04N712
CPC分类号： H04N19/423 , H04N5/21 , H04N19/61
摘要： The video signal encoding device comprises an encoding frame pulse generating means for generating an encoding frame pulse on the basis of a video input frame pulse signal and a video input clock signal input thereto, as well as a video signal rearranging means for rearranging the frame order of video input signals, together with a video signal write control means and a read control means; wherein the encoding frame pulse generating means generates the encoding frame pulse first by setting a reference phase in accordance with the video input frame pulse, and thereafter dividing the frequency of the video input clock signal to a predetermined number of clock pulses. The video signal read control means controls the read operation of the video signals stored in the video signal rearranging means on the basis of the encoding pulse signal generated by said frame pulse generating means and the video input clock signal.
摘要翻译： 视频信号编码装置包括：编码帧脉冲发生装置，用于根据输入的视频输入帧脉冲信号和视频输入时钟信号产生编码帧脉冲，以及用于重新排列帧顺序的视频信号重新排列装置 的视频输入信号，以及视频信号写入控制装置和读取控制装置; 其中编码帧脉冲产生装置通过根据视频输入帧脉冲设置参考相位，然后将视频输入时钟信号的频率除以预定数量的时钟脉冲，来首先产生编码帧脉冲。 视频信号读取控制装置基于由所述帧脉冲发生装置产生的编码脉冲信号和视频输入时钟信号来控制存储在视频信号重新排列装置中的视频信号的读取操作。
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18.发明授权Filter for separating luminance and chrominance signals from composite color television signal 失效用于从复合彩色电视信号中分离亮度和色度信号的滤波器
公开(公告)号：US4954885A
公开(公告)日：1990-09-04
申请号：US160332
申请日：1988-02-25
申请人： Hiroshi Ito , Tadashi Kasezawa , Masaharu Yao
发明人： Hiroshi Ito , Tadashi Kasezawa , Masaharu Yao
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A filtering circuit separates from the composite color television signal both the luminance and chrominance signals that includes a delay circuit for delaying the composite color video signal. A first filter is also provided which is responsive to the video signal and the delayed video signal and extracts a chrominance signal corresponding to a frequency component of a color subcarrier in a vertical direction. A second filter is used which is responsive to at least the delayed video signal and extracts a chrominance signal corresponding to a frequency component of the color subcarrier in a horizontal direction. Lastly, a third filter is utilized which is responsive to the video signal and the delayed video signal and extracts a chrominance signal corresponding to a frequency component of the color subcarrier in both the vertical and horizontal direction. This filter circuit then determines, in response to the video signal and the delayed video signal, a correlation in a televised picture in the vertical and horizontal directions, respectively. In accordance with this determination, a switching circuit selects one of the chrominance signals extracted, respectively, by the first to third filters as an output.
摘要翻译： 滤波电路与复合彩色电视信号分离亮度和色度信号，包括用于延迟复合彩色视频信号的延迟电路。 还提供了响应于视频信号和延迟的视频信号的第一滤波器，并且提取与垂直方向上的彩色副载波的频率分量相对应的色度信号。 使用第二滤波器，其响应于至少延迟的视频信号，并且在水平方向上提取与彩色副载波的频率分量相对应的色度信号。 最后，使用响应于视频信号和延迟的视频信号的第三滤波器，并且在垂直和水平方向上提取与彩色副载波的频率分量相对应的色度信号。 然后，该滤波器电路响应于视频信号和延迟的视频信号，分别确定电视图像在垂直和水平方向上的相关性。 根据该判断，开关电路分别选择由第一至第三滤波器提取的色度信号之一作为输出。
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公开(公告)号：US4789890A
公开(公告)日：1988-12-06
申请号：US937045
申请日：1986-12-02
申请人： Hiroshi Itoh , Tadashi Kasezawa , Yoshiki Mizutani
发明人： Hiroshi Itoh , Tadashi Kasezawa , Yoshiki Mizutani
摘要： In a judgement circuit for an adaptive filter for use in a color television system, sample values of a composite video signal are obtained by sampling the composite video signal at a predetermined sampling frequency in synchronism with a horizontal scanning frequency in such a manner that the corresponding sample points are arranged in a grating on the screen. A horizontal filter receives the sample values corresponding to a first sample point and a second and a third sample points positioned at the left of and at the right of the first sample point. A vertical filter receives the sample values corresponding to the first sample point and a fourth and a fifth sample points positioned over and under the first sample point. The variation of the signal in the vertical direction and the variation of the signal in the vertical direction are detected, and are compared. One of the output of the horizontal filter and the output of the vertical filter is selected in accordance with the result of the comparison.
摘要翻译： 在用于彩色电视系统的自适应滤波器的判断电路中，通过以与水平扫描频率同步的预定采样频率对复合视频信号进行采样来获得复合视频信号的采样值， 采样点布置在屏幕上的光栅中。 水平滤波器接收对应于位于第一采样点左侧和右侧的第一采样点和第二和第三采样点的采样值。 垂直滤波器接收对应于第一采样点的采样值和位于第一采样点之上和之下的第四和第五采样点。 检测信号在垂直方向上的变化和信号在垂直方向上的变化，并进行比较。 根据比较结果选择水平滤波器的输出和垂直滤波器的输出之一。
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