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    Moving picture decoding apparatus
    4.
    发明授权
    Moving picture decoding apparatus 有权
    运动图像解码装置

    公开(公告)号：US08755439B2

    公开(公告)日：2014-06-17

    申请号：US13428354

    申请日：2012-03-23

    Applicant: Takashi Sugimoto ,  Takeshi Tanaka ,  Hiroshi Ikeda ,  Kiyofumi Abe

    Inventor： Takashi Sugimoto ,  Takeshi Tanaka ,  Hiroshi Ikeda ,  Kiyofumi Abe

    IPC: H04N7/50 ,  H04N7/26

    CPC classification number: H04N19/00533 ,  H04N19/44 ,  H04N19/573 ,  H04N19/577 ,  H04N19/58 ,  H04N19/895

    Abstract: Provided is a moving picture decoding apparatus including: a picture memory that stores previously decoded picture data of a picture including macroblocks and macroblock information described on a macroblock basis, in association therebetween; an error judging unit that judges presence or absence of an error for a current picture to be decoded; a picture data replacing unit that replaces, when an error is present, picture data of the current picture to be decoded with that of a previously decoded picture in the picture memory; and a macroblock information replacing unit that replaces macroblock information in association with the current picture to be decoded including an error with macroblock information stored in association with the previously decoded picture, or a macroblock information storage unit that stores information that indicates presence of the error for the current picture to be decoded in association therewith.

    Abstract translation: 提供了一种运动图像解码装置，包括：图像存储器，其存储先前解码的图像的图像数据，所述图像包括以宏块为基础描述的宏块和宏块信息; 错误判定单元，判定当前要解码的图像的错误的存在或不存在; 图像数据替换单元，当存在错误时，将要解码的当前图像的图像数据与图像存储器中的先前解码图像的图像数据替换; 以及宏块信息替换单元，其将与当前要解码的图像相关联的宏块信息替换为包含与先前解码的图像相关联地存储的宏块信息的错误;宏块信息存储单元，其存储指示错误存在的信息， 要与之相关联的当前图像被解码。

    Motion vector coding and decoding methods
    9.
    发明授权
    Motion vector coding and decoding methods 有权

    公开(公告)号：US08213510B2

    公开(公告)日：2012-07-03

    申请号：US11980622

    申请日：2007-10-31

    Applicant: Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

    Inventor： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

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

    CPC classification number: H04N19/61 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/52 ,  H04N19/573

    Abstract: A motion vector coding method and apparatus that improves efficiency of coding motion vectors when a current block is coded using a plurality of motion vectors. The apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of the following processes: (A) the motion vectors which refer to the same picture are selected from among the motion vectors for the neighboring blocks so as to generate the predicted vector; (B) the motion vectors for the respective neighboring blocks are ordered in the predetermined order, and the motion vectors of the same order rank are selected from the ordered motion vectors so as to generate the predicted vector; and (C) the predicted vector for the second motion vector of the current block shall be the first motion vector, and if the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled according to the temporal distance between the pictures so as to generate the predicted vector.

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