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    Image encoding apparatus having an intrapicture encoding mode and interpicture encoding mode
    1.
    发明授权
    Image encoding apparatus having an intrapicture encoding mode and interpicture encoding mode 失效
    具有图像间编码模式和图像间编码模式的图像编码装置

    公开(公告)号：US5805223A

    公开(公告)日：1998-09-08

    申请号：US893001

    申请日：1997-07-15

    申请人： Akihiro Shikakura ,  Masato Kato

    发明人： Akihiro Shikakura ,  Masato Kato

    IPC分类号： H04N7/26 ,  H04N7/50 ,  H04N7/18

    CPC分类号： H04N19/107 ,  H04N19/61

    摘要： An image encoding apparatus for encoding input image data using both of an intrapicture encoding mode and a motion compensation interpicture encoding mode has a refresh area setting section for setting a refresh area to allow an intraimage encoding to be forcibly performed in a picture plane so as to overlap between picture planes in a motion compensation range or more, a refresh control section for forcibly setting an encoding mode of the input image data to the intrapicture encoding mode in the refresh area set by the refresh area setting section, and a cancel section for cancelling a refresh when an image portion as a prediction image of an interpicture encoding has been intrapicture encoded even in the refresh area set by the refresh area setting section.

    摘要翻译： 一种图像编码装置，用于使用图像间编码模式和运动补偿图像间编码模式两者来编码输入图像数据，具有刷新区域设定部分，用于设置刷新区域以允许在图像平面中强制执行图像内编码，以便 在运动补偿范围以上的图像平面之间重叠，刷新控制部分，用于在由刷新区域设置部分设置的刷新区域中强制将输入图像数据的编码模式设置为图像间编码模式;以及取消部分， 即使在由刷新区域设定部设定的刷新区域中，作为图像间编码的预测图像的图像部分已被图像内编码的刷新。

    Receiving apparatus for performing a filter process to selectively synthesize image signals to control image quality
    2.
    发明授权
    Receiving apparatus for performing a filter process to selectively synthesize image signals to control image quality 失效
    接收装置，用于执行滤波处理以选择性地合成图像信号以控制图像质量

    公开(公告)号：US6108379A

    公开(公告)日：2000-08-22

    申请号：US780004

    申请日：1996-12-23

    申请人： Akihiro Shikakura ,  Masato Kato

    发明人： Akihiro Shikakura ,  Masato Kato

    IPC分类号： H04N19/00 ,  H04N19/102 ,  H04N19/117 ,  H04N19/134 ,  H04N19/166 ,  H04N19/182 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51 ,  H04N19/587 ,  H04N19/59 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/67 ,  H04N19/80 ,  H04N19/85 ,  H04N19/89 ,  H04N7/24

    CPC分类号： H04N19/89 ,  H04N19/80

    摘要： A receiving apparatus receives a hierarchically encoded image signal and detects an error in the image signal. Then a filter process is performed on the image signal, the filter process being controlled based on the output of the error detections. More particularly, the image signal has multiplexed therein a first encoded image signal having a lower image quality and a second encoded image signal for obtaining a higher image quality. These are decoded to obtain a first decoded image signal and a second decoded image signal, and the position of an error in an image frame of the image signal is detected. Then a mode of the apparatus is set to one of a plurality of modes according to the detection, the modes including a first mode in which an image signal having the higher quality is obtained by synthesizing the first and second decoded image signals and a second mode in which an image signal having the lower image quality is obtained by inhibiting a synthesizing operation of the second decoded image signal to the first decoded image signal.

    摘要翻译： 接收装置接收分层编码图像信号并检测图像信号中的错误。 然后对图像信号进行滤波处理，滤波处理根据误差检测的输出进行控制。 更具体地，图像信号在其中复用了具有较低图像质量的第一编码图像信号和用于获得较高图像质量的第二编码图像信号。 对它们进行解码以获得第一解码图像信号和第二解码图像信号，并且检测图像信号的图像帧中的误差的位置。 然后根据检测将装置的模式设置为多种模式中的一种，包括通过合成第一和第二解码图像信号获得具有较高质量的图像信号的第一模式的模式和第二模式 其中通过禁止第二解码图像信号对第一解码图像信号的合成操作来获得具有较低图像质量的图像信号。

    Image coding apparatus
    3.
    发明授权
    Image coding apparatus 失效
    图像编码装置

    公开(公告)号：US06219157B1

    公开(公告)日：2001-04-17

    申请号：US08916435

    申请日：1997-08-22

    申请人： Akihiro Shikakura ,  Makoto Gohda ,  Yoshiki Ishii

    发明人： Akihiro Shikakura ,  Makoto Gohda ,  Yoshiki Ishii

    IPC分类号： H04N701

    CPC分类号： H04N19/60 ,  H04N19/895

    摘要： An image coding apparatus comprises a divider for dividing an image into a plurality of coding blocks overlapped to each other, and a coder for coding them for each of the coding blocks divided by the divider.

    摘要翻译： 图像编码装置包括用于将图像分割为彼此重叠的多个编码块的分割器，以及用于对由分割器划分的每个编码块进行编码的编码器。

    Error detection and correction device
    4.
    发明授权
    Error detection and correction device 失效
    错误检测和纠正装置

    公开(公告)号：US5996109A

    公开(公告)日：1999-11-30

    申请号：US895819

    申请日：1997-07-17

    申请人： Akihiro Shikakura

    发明人： Akihiro Shikakura

    IPC分类号： H03M13/00 ,  G06F11/00 ,  G11B20/18 ,  H03M13/05 ,  H03M13/29

    CPC分类号： H03M13/2906 ,  G11B20/1833 ,  H03M13/05 ,  H03M13/29

    摘要： An error detection and correction device in which a word train including a number of error correction codes each constructed from a plurality of words is input, the error correction code being of the type that two error words can be corrected by each error correction code. Error words are corrected by using the error correction code within the word train. Mode setting information associated with an error rate of the word train is generated, and an error correction means is controlled in a first or a second error correction mode depending on the mode setting. The error correction means corrects one or two error words for each error correction code in the first error correction mode and corrects only one error word for each error correction code in the second error correction mode.

    摘要翻译： 一种误差检测和校正装置，其中输入包括由多个单词构成的多个纠错码的单词串，所述纠错码是可以通过每个纠错码校正两种错误字的类型。 通过使用单词列表内的纠错码纠正错误字。 产生与字串的错误率相关联的模式设置信息，并且根据模式设置，将误差校正装置控制在第一或第二纠错模式中。 误差校正装置在第一纠错模式中纠正每个纠错码的一个或两个误差字，并且在第二纠错模式中仅修正每个纠错码的一个错误字。

    Encoding apparatus
    6.
    发明授权
    Encoding apparatus 失效
    数字数据编码装置

    公开(公告)号：US5043809A

    公开(公告)日：1991-08-27

    申请号：US520957

    申请日：1990-05-09

    申请人： Akihiro Shikakura ,  Koji Takahashi ,  Yoshiki Ishii ,  Tomohiko Sasatani

    发明人： Akihiro Shikakura ,  Koji Takahashi ,  Yoshiki Ishii ,  Tomohiko Sasatani

    IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/32

    CPC分类号： H04N19/00 ,  H04N19/50 ,  H04N19/60

    摘要： The present invention relates to an encoding apparatus for digitizing and encoding an input image signal, the input image signal being sequentially sampled to sequentially form sample signals at respective sample points. The encoding data which respectively correspond to the sample signals at respective sample points are formed, and the plurality of resultant encoding data are sequentially output on a group unit basis of k (k being an integer equal to or greater than 2) encoding data in accordance with the order different from the forming order of the encoding data. In accordance with a combination of the k encoding data which have been output, the k encoding data are converted into the data train having less DC and low frequency components and output, so that the image signal can be highly efficiently encoded.

    摘要翻译： 本发明涉及一种用于对输入图像信号进行数字化和编码的编码装置，所述输入图像信号被顺序采样以在相应采样点顺序地形成采样信号。 形成分别对应于各取样点的采样信号的编码数据，并且按照根据编码数据的k（k为2以上的整数）的组为单位依次输出多个合成编码数据 其顺序与编码数据的形成顺序不同。 根据已经输出的k个编码数据的组合，将k个编码数据转换成具有较少的DC和低频分量的数据串，并输出，从而可高效地编码图像信号。

    Encoding device and decoding device suitable for dubbing
    8.
    发明授权
    Encoding device and decoding device suitable for dubbing 失效
    编码装置和解码装置适用于配音

    公开(公告)号：US06473879B1

    公开(公告)日：2002-10-29

    申请号：US09502210

    申请日：2000-02-11

    申请人： Yoshiki Ishii ,  Akihiro Shikakura ,  Tetsuya Shimizu

    发明人： Yoshiki Ishii ,  Akihiro Shikakura ,  Tetsuya Shimizu

    IPC分类号： G11C2900

    CPC分类号： G11B27/032 ,  G11B5/86 ,  G11B20/1876 ,  G11B2220/90

    摘要： Where a recording medium recorded on at a slave side apparatus is reproduced, it has been made possible to perform on cite modification processing identical to that conducted at a master side apparatus, by reproducing, at the master side apparatus, the primary information added with parity symbol for error correction from the recording medium on which the primary information is recorded, correcting the symbol error of primary information reproduced at the reproducing means using the reproduced parity symbol, producing the flag which indicates the production of an uncorrectable symbol error in one unit of a block of a specified amount of information and thus outputting the modification information corresponding to the primary information and the flag and forming, at the slave side, the parity symbol for correction of error of primary information output at the master side apparatus and recording the primary information with the parity symbol and modification information, on the same recording medium. It has also become possible to conduct satisfactory modification processing when the symbol error is produced.

    摘要翻译： 在再现记录在从属设备上的记录介质的情况下，可以通过在主机侧再现添加奇偶校验的主信息来执行与在主机侧进行相同的修改处理， 从记录有主信息的记录介质进行纠错的符号，使用再现的奇偶校验符号校正在再现装置处再现的主信息的符号错误，产生指示产生一个单位的不可校正符号误差的标志 指定量的信息的块，从而输出与主信息和标志相对应的修改信息，并且在从属侧形成用于校正在主机侧输出的主信息的错误的奇偶校验符号，并记录主 信息与奇偶校验符号和修改信息相同， 流动媒介。 当产生符号错误时，也可以进行令人满意的修改处理。