公开(公告)号：US07050502B2

公开(公告)日：2006-05-23

申请号：US10243844

申请日：2002-09-16

申请人： Tomoko Yasunari ,  Shinya Kadono ,  Satoshi Kondo

发明人： Tomoko Yasunari ,  Shinya Kadono ,  Satoshi Kondo

IPC分类号： H04N7/12

CPC分类号： H04N19/137 ,  G06T7/238 ,  H04N5/145 ,  H04N19/51 ,  H04N19/56 ,  H04N19/57

摘要： A method and apparatus for performing motion estimation under a motion estimation mode suitable for an amount of motion within each E-block detects a motion vector with a small amount of computation. A block division section divides a frame to be encoded into E-blocks of a predetermined pixel size. For each target E-block, a motion estimation mode detection section relies on a past motion vector of a predetermined block to predict an amount of motion, and determines a motion estimation mode defining a search area that enables detection of the predicted amount of motion among a plurality of predefined motion estimation modes. If the predicted amount of motion is small, a mode defining a narrow search area and a fine search resolution is selected. If the predicted amount of motion is large, a mode defining a broad search area and a coarse search resolution is selected.

摘要翻译： 在适于每个E块内的运动量的运动估计模式下执行运动估计的方法和装置利用少量的计算来检测运动矢量。 块分割部将要编码的帧划分为预定像素大小的E块。 对于每个目标E块，运动估计模式检测部分依赖于预定块的过去运动矢量来预测运动量，并且确定运动估计模式，其定义能够检测预测运动量的检索区域 多个预定义的运动估计模式。 如果预测的运动量小，则选择定义窄搜索区域和精细搜索分辨率的模式。 如果预测的运动量大，则选择定义广泛搜索区域和粗略搜索分辨率的模式。

公开(公告)号：US06947659B2

公开(公告)日：2005-09-20

申请号：US10751476

申请日：2004-01-06

申请人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

发明人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

IPC分类号： H04N5/92 ,  G06T9/00 ,  H04N7/08 ,  H04N7/081 ,  H04N7/24 ,  H04N7/50 ,  H04N7/52 ,  H04N19/00 ,  H04N19/46 ,  H04N19/503 ,  H04N19/70 ,  H04N19/85 ,  H04N21/2343 ,  H04N21/235 ,  H04N21/236 ,  H04N21/242 ,  H04N21/43 ,  H04N21/434 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654 ,  H06N5/91 ,  H04N5/91

CPC分类号： H04N7/52 ,  H04N19/46 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654

摘要： A data structure of an image signal includes a reproduction cycle identifier indicating whether the cycle of image display for each frame is variable or not. When the display cycle identifier indicates that the display cycle is fixed, display cycle data is inserted in a header of the coded image data, and data relating to the frame number is inserted in each frame. On the other hand, when the display cycle identifier indicates that the display cycle is variable, display time data is inserted for each frame. Therefore, when decoding and displaying the coded image data having a fixed display cycle, the decoded image data can be displayed by a simple circuit structure, i.e., based on the display cycle data and the frame number data having a relatively small data quantity (bit number), without referring to the display time data having a relatively large data quantity for each frame. Furthermore, this data structure can be applied to a coded image signal having a variable display cycle.

摘要翻译： 图像信号的数据结构包括指示每帧的图像显示周期是否可变的再现周期标识符。 当显示周期标识符指示显示周期固定时，将显示周期数据插入编码图像数据的标题中，并且在每帧中插入与帧号相关的数据。 另一方面，当显示周期标识符指示显示周期是可变的时，针对每个帧插入显示时间数据。 因此，当解码和显示具有固定显示周期的编码图像数据时，解码图像数据可以通过简单的电路结构显示，即，基于显示周期数据和具有相对较小数据量的位数（bit 数字），而不参考每帧具有相对较大数据量的显示时间数据。 此外，该数据结构可以应用于具有可变显示周期的编码图像信号。

公开(公告)号：US20050190844A1

公开(公告)日：2005-09-01

申请号：US11063871

申请日：2005-02-23

申请人： Shinya Kadono ,  Youji Shibahara

发明人： Shinya Kadono ,  Youji Shibahara

IPC分类号： H04N5/14 ,  H04N7/12 ,  H04N7/26 ,  H04N7/36 ,  H04N7/50

CPC分类号： H04N19/533 ,  H04N5/145 ,  H04N19/61 ,  H04N21/41422 ,  H04N21/6143

摘要： The motion vector estimation unit (106) is comprised of: an error calculation unit (202) that calculates errors SAD1 to SAD9 that are differences between the current block data tar_img and the respective neighboring reference block data ref_img; a minimum-error block determination unit (203) that determines, as a minimum-error block, a reference block that includes the smallest error of all the errors SAD1 to SAD9, and outputs a motion vector mvmin corresponding to the position of the determined minimum-error block; an end judgment unit (204) that judges whether or not the motion estimation should be ended; and a search center determination unit (205) that determines, as a reference block serving as the next search center, a reference block that is two pixels or more away from the current search center, according to the position of the minimum-error block.

摘要翻译： 运动矢量估计单元（106）包括：误差计算单元（202），其计算作为当前块数据tar_img和各个相邻参考块数据ref_img之间的差的误差SAD 1至SAD 9; 确定作为最小误差块的包括所有误差SAD 1至SAD 9的最小误差的参考块的最小误差块确定单元（203），并且输出与所述差分块的位置相对应的运动矢量mvmin 确定的最小误差块; 判断运动估计是否应该结束的结束判断单元（204） 以及搜索中心确定单元，其根据最小误差块的位置，将作为下一个搜索中心的参考块确定为距离当前搜索中心两个或更多个的参考块。

公开(公告)号：US20050117642A1

公开(公告)日：2005-06-02

申请号：US10500291

申请日：2003-05-29

申请人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

发明人： Kiyofumi Abe ,  Shinya Kadono ,  Satoshi Kondo ,  Makoto Hagai

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/46 ,  H04N7/50 ,  H04N7/12

CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/159 ,  H04N19/44 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61

摘要： In the coding method of the present invention, by adding an identification signal for indicating that there is no need to reorder coded pictures in the case where no picture coded by referring to a single or two pictures in the backward direction in display order is included in the sequence data, a restriction on pictures not to refer to any picture except the pictures that are positioned in the temporally forward direction is imposed and pictures are coded in the same order as the display order. Also, in the decoding method, only pictures that are positioned in the temporally forward direction are referred to according to the above-mentioned identification signal and these coded pictures are decoded in the same order as the display order.

摘要翻译： 在本发明的编码方法中，通过添加用于指示不需要对编码图像进行重新排序的识别信号，在不包括以显示顺序参考向后方向的一个或两个图像编码的图像的情况下 序列数据，对图像的限制，不涉及除了位于时间上正向的图像之外的任何图像，并且以与显示顺序相同的顺序对图像进行编码。 此外，在解码方法中，仅根据上述识别信号参考位于时间上正向的图像，并且以与显示顺序相同的顺序对这些编码图像进行解码。

公开(公告)号：US06654541B1

公开(公告)日：2003-11-25

申请号：US09176953

申请日：1998-10-22

申请人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

发明人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

IPC分类号： H04N591

CPC分类号： H04N7/52 ,  H04N19/46 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654

摘要： A data structure of an image signal includes a reproduction cycle identifier indicating whether the cycle of image display for each frame is variable or not. When the display cycle identifier indicates that the display cycle is fixed, display cycle data is inserted in a header of the coded image data, and data relating to the frame number is inserted in each frame. On the other hand, when the display cycle identifier indicates that the display cycle is variable, display time data is inserted for each frame. Therefore, when decoding and displaying the coded image data having a fixed display cycle, the decoded image data can be displayed by a simple circuit structure, i.e., based on the display cycle data and the frame number data having a relatively small data quantity (bit number), without referring to the display time data having a relatively large data quantity for each frame. Furthermore, this data structure can be applied to a coded image signal having a variable display cycle.

摘要翻译： 图像信号的数据结构包括指示每帧的图像显示周期是否可变的再现周期标识符。 当显示周期标识符指示显示周期固定时，将显示周期数据插入编码图像数据的标题中，并且在每帧中插入与帧号相关的数据。 另一方面，当显示周期标识符指示显示周期是可变的时，针对每个帧插入显示时间数据。 因此，当解码和显示具有固定显示周期的编码图像数据时，解码图像数据可以通过简单的电路结构显示，即，基于显示周期数据和具有相对较小数据量的位数（bit 数字），而不参考每帧具有相对较大数据量的显示时间数据。 此外，该数据结构可以应用于具有可变显示周期的编码图像信号。

公开(公告)号：US06597814B2

公开(公告)日：2003-07-22

申请号：US09749911

申请日：2000-12-29

申请人： Shinya Kadono

发明人： Shinya Kadono

IPC分类号： G06K936

CPC分类号： H04N19/543 ,  H04N19/107 ,  H04N19/20 ,  H04N19/503 ,  H04N19/51 ,  H04N19/61

摘要： It is an object to encode an image signal or a shape signal more efficiently than the prior art. As a means to accomplish the object, the change pixel detector 2 receives the input signal 1 as an input signal and detects the pixel which changes the two-valued pixel value. Further, the change pixel predictor 4 also reads out the reference image stored in the memory 3, and predicts the change pixel of the particular input signal. The difference value calculator 5 subtracts the output of the change pixel predictor 4 from the output of the change pixel detector 2. The difference value rounder 7 compares the tolerance value e and the prediction error D, and outputs x which requires the minimum bit number for being encoded in the value D−e≦x≦D+e. The output of the difference value rounder 7 is encoded by the decoder 8 to become the encoded signal 9. Also, the output of the difference value rounder 7 is added in the difference value adder 11 to the predicted pixel 4 of the predicted pixel predictor 4, whereby the change pixel is calculated, and in the change pixel decoder 10, the respective pixels from the already decoded pixel indicated by the change pixel predictor 4 to the change pixel is decoded to be stored in the memory 3.

摘要翻译： 目的是比现有技术更有效地对图像信号或形状信号进行编码。 作为实现该目的的手段，变化像素检测器2接收输入信号1作为输入信号，并检测改变二值像素值的像素。 此外，变化像素预测器4还读出存储在存储器3中的参考图像，并且预测特定输入信号的变化像素。 差值计算器5从变化像素检测器2的输出中减去变化像素预测器4的输出。差分值越高器7将公差值e和预测误差D进行比较，并输出需要最小位数的x 以De <= x <= D + e编码。 差值舍入器7的输出由解码器8编码，成为编码信号9.另外，差分值加法器11的输出与预测像素预测器4的预测像素4相加 ，由此计算变化像素，并且在变化像素解码器10中，将由改变像素预测器4指示的已经解码的像素的各个像素解码为存储在存储器3中。

公开(公告)号：US06549724B2

公开(公告)日：2003-04-15

申请号：US09824711

申请日：2001-04-04

申请人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

发明人： Takahiro Nishi ,  Shinya Kadono ,  Choong Seng Boon

IPC分类号： H04N726

CPC分类号： H04N7/52 ,  H04N19/46 ,  H04N21/234318 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/242 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/6332 ,  H04N21/654

摘要： A data structure of an image signal includes a reproduction cycle identifier indicating whether the cycle of image display for each frame is variable or not. When the display cycle identifier indicates that the display cycle is fixed, display cycle data is inserted in a header of the coded image data, and data relating to the frame number is inserted in each frame. On the other hand, when the display cycle identifier indicates that the display cycle is variable, display time data is inserted for each frame. Therefore, when decoding and displaying the coded image data having a fixed display cycle, the decoded image data can be displayed by a simple circuit structure, i.e., based on the display cycle data and the frame number data having a relatively small data quantity (bit number), without referring to the display time data having a relatively large data quantity for each frame. Furthermore, this data structure can be applied to a coded image signal having a variable display cycle.

公开(公告)号：US06275530B1

公开(公告)日：2001-08-14

申请号：US09091678

申请日：1998-08-11

申请人： Takahiro Nishi ,  Shinya Kadono

发明人： Takahiro Nishi ,  Shinya Kadono

IPC分类号： H04N736

CPC分类号： H04N19/44 ,  H04N19/124 ,  H04N19/15 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/30

摘要： An image coding apparatus 1 of the present invention comprises a coding controller 112a for generating a transparency coding parameter 121 for controlling coding process for transparency signals on the basis of a pixel value coding parameter 104 for controlling coding process for pixel value signals and performs coding process for transparency signals 102 on the basis of the transparency coding parameter 121. The image coding apparatus 1 above constructed can control an image quality obtained from transparency signals of each image included in a composite image according to an image quality of pixel value signals of each image of the composite image, and thus it is possible to reduce redundant information of coded transparency signals 106 resulting from coding the transparency signals without degrading an image quality of each image, thereby implementing recording and transmission of image signals with fewer bits with no degradation of image quality.

摘要翻译： 本发明的图像编码装置1包括：编码控制器112a，用于根据用于控制像素值信号的编码处理的像素值编码参数104，生成用于控制透过度信号的编码处理的透过度编码参数121，并执行编码处理 根据透过度编码参数121对透过度信号102进行透镜化。上述构成的图像编码装置1可以根据各图像的像素值信号的图像质量来控制从包含在合成图像中的各图像的透过度信号得到的图像质量 的复合图像，因此可以减少由透明度信号编码而产生的透过度信号106的冗余信息，而不降低每个图像的图像质量，从而实现具有较少位的图像信号的记录和传输，而不会降低图像 质量。

公开(公告)号：US5587806A

公开(公告)日：1996-12-24

申请号：US215421

申请日：1994-03-21

申请人： Masazumi Yamada ,  Shinya Kadono ,  Shiro Kato

发明人： Masazumi Yamada ,  Shinya Kadono ,  Shiro Kato

IPC分类号： G11B5/588 ,  G11B15/18 ,  G11B15/467 ,  H04N5/7826 ,  H04N5/783 ,  H04N7/26 ,  H04N7/50 ,  H04N7/52 ,  H04N9/804 ,  H04N9/82 ,  H04N19/89 ,  H04N5/76 ,  H04N5/78

CPC分类号： G11B15/1875 ,  H04N19/103 ,  H04N19/115 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/37 ,  H04N19/42 ,  H04N19/44 ,  H04N19/61 ,  H04N19/89 ,  H04N21/236 ,  H04N21/434 ,  H04N9/8042 ,  G11B15/4671 ,  G11B15/4673 ,  G11B5/588 ,  H04N19/107 ,  H04N19/146 ,  H04N19/152 ,  H04N5/78266 ,  H04N5/783 ,  H04N9/8227

摘要： An apparatus records and reproduces high efficiency coded video signal to and from a recording medium and includes an important data generating circuit for generating at least an important data from an input video signal, a data arranging circuit for arranging the important data so as to be recorded at predetermined positions, and a recording and reproduction control circuit for controlling recording and reproducing operations. The input video signal is separated into information common to each large block and information native to small blocks of the each large block. A coding mode of each of the small blocks thus separated is judged. The input video signal is divided into a plurality of packets, data for generating a common information from the input video signal is decoded, the common information thus generated is stored at a predetermined position of a packet, and each packet is sequentially recorded on a recording medium. Data for generating a common information from a predetermined position of each packet is read out when reproducing a recorded signal, the common information is generated from read-out data, and plural small blocks are collected using the common information thereby to compose a large block, so that high speed reproduction can be obtained when an intra-/inter-picture coded signal is recorded.

摘要翻译： 一种装置将记录介质的高效率编码视频信号记录并再现，并且包括用于从输入视频信号产生至少一个重要数据的重要数据产生电路，用于安排重要数据以便被记录的数据排列电路 在预定位置，以及用于控制记录和再现操作的记录和再现控制电路。 输入视频信号被分成每个大块的公共信息和每个大块的小块的原始信息。 判断由此分离的每个小块的编码模式。 将输入视频信号分成多个分组，对来自输入视频信号的公共信息进行解码的数据被解码，这样生成的公共信息被存储在分组的预定位置，并且每个分组被顺序记录在记录 中。 在再生记录信号时，从读出数据生成公共信息，从各分组的规定位置生成公共信息的数据，利用公共信息收集多个小块，构成大块， 从而当记录了帧内/图像间编码信号时可以获得高速再现。

公开(公告)号：US5193010A

公开(公告)日：1993-03-09

申请号：US574288

申请日：1990-08-28

申请人： Tatsuro Juri ,  Chiyoko Matsumi ,  Shinya Kadono ,  Hideki Ohtaka

发明人： Tatsuro Juri ,  Chiyoko Matsumi ,  Shinya Kadono ,  Hideki Ohtaka

IPC分类号： G11B20/00 ,  G11B20/18 ,  G11B27/032 ,  H04N5/926 ,  H04N5/945 ,  H04N19/89 ,  H04N19/895

CPC分类号： G11B27/032 ,  G11B20/00086 ,  G11B20/1809 ,  H04N19/142 ,  H04N19/179 ,  H04N19/87 ,  H04N19/89 ,  H04N19/895 ,  H04N5/926 ,  H04N5/945 ,  G11B2220/90 ,  H04N19/60 ,  H04N19/65

摘要： In recording and reproducing the digital video signals by bit rate reduction, if they are copied while being subjected to bit rate reduction, no accumulation of distortions in orthogonal transformation or bit rate reduction occurs, and moreover, copying can be done at a low data rate. On the other hand, in case of dividing the data into blocks in each page and transmitting or recording and reproducing the data by block, by concealing the error by the data having the strongest correlation out of the data located in the pages before and after the block in which error has been detected, no degradation in image quality is induced even when the scene changes between pages. Further, at the same time, by detecting the previous concealment information, if there exists a block which was previously concealed in the block in which error has at present been detected, then the data can be fully reproduced by utilizing it, and degradation in image quality can be reduced to a minimum. Also, if degradation in image quality is reduced to a minimum, then the degradation in image quality in the case of repeated copying is reduced to a minimum.