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153 条记录 (耗时 0.025 秒)

    Adaptive encoding system of moving picture frame
    151.
    发明授权
    Adaptive encoding system of moving picture frame 失效
    运动图像帧的自适应编码系统

    公开(公告)号：US5309231A

    公开(公告)日：1994-05-03

    申请号：US897104

    申请日：1992-06-11

    申请人： Takahiro Hamada ,  Masahiro Saito ,  Syuichi Matsumoto

    发明人： Takahiro Hamada ,  Masahiro Saito ,  Syuichi Matsumoto

    IPC分类号： H04N11/04 ,  H04N19/102 ,  H04N19/124 ,  H04N19/132 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/146 ,  H04N19/176 ,  H04N19/192 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/60 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  H04N7/133

    CPC分类号： H04N11/044 ,  H04N19/126 ,  H04N19/132 ,  H04N19/149 ,  H04N19/176 ,  H04N19/13 ,  H04N19/30 ,  H04N19/91

    摘要： A frame of a picture is first divided into a plurality of blocks, each of which is subject to orthogonal transform to provide picture pels in the form of matrixes, which have a coefficient of DC component, and coefficients of AC components. AC components in said matrix are subject to a pre-quantization for each frame evaluate total code length (L') in the encoding. A number (N') of significant coefficients which are not zero in each block or each macro block is counted. A step size in quantization is determined according to said values L' and N' and coefficient position. The quantized block is subject to effective baseband selection for further reduction of information amount so that a zero coefficient after EOB in the block along the selected scanning line defined by the selected effective baseband is eliminated. If the information amount after the eliminating of zero coefficients still exceeds a preferable bit rate, a high order coefficient in the matrix is further eliminated, so that a picture frame is encoded into a predetermined fixed bit rate.

    摘要翻译： 图像的帧首先划分为多个块，每个块经过正交变换，以提供具有DC分量系数和AC分量系数的矩阵形式的图像像素。 所述矩阵中的AC分量经历对每个帧的预量化，评估编码中的总代码长度（L'）。 对每个块或每个宏块中不为零的有效系数的数目（N'）进行计数。 根据所述值L'和N'以及系数位置来确定量化中的步长。 量化块进行有效的基带选择，以进一步减少信息量，从而消除沿着由所选择的有效基带定义的所选扫描线的块中的EOB之后的零系数。 如果消除零系数之后的信息量仍然超过优选的比特率，则矩阵中的高阶系数被进一步消除，使得将图像帧编码为预定的固定比特率。

    Metallic material proof against attachment of marine organisms
    152.
    发明授权
    Metallic material proof against attachment of marine organisms 失效
    防止海洋生物附着的金属材料

    公开(公告)号：US4402906A

    公开(公告)日：1983-09-06

    申请号：US272526

    申请日：1981-06-11

    申请人： Shoji Ueda ,  Takashi Daikoku ,  Masato Zama ,  Shintaro Matsuo ,  Masahiro Saito ,  Hidejiro Kinoshita

    发明人： Shoji Ueda ,  Takashi Daikoku ,  Masato Zama ,  Shintaro Matsuo ,  Masahiro Saito ,  Hidejiro Kinoshita

    IPC分类号： C22C9/00 ,  B63B59/04 ,  C22C9/05

    CPC分类号： C22C9/05

    摘要： An alloy containing Mn in an amount of from 5 to 30 weight percent, at least one member selected from the group consisting of Sn of an amount of not more than 5 weight percent, Al of an amount of not more than 8.5 weight percent, Zn of an amount of not more than 7 weight percent, Fe of an amount of not more than 2.5 weight percent, and Ni of an amount of not more than 2.5 weight percent, and the balance to make up 100 weight percent of Cu plus normally entrained impurities produces a metallic material proof against the attachment thereto of marine organisms when the alloy fulfils a requirement that it should possess an .alpha.(face-centered cubic lattice) single-phase structure.

    摘要翻译： 含有5〜30重量％的Mn的合金，至少1种选自Sn不超过5重量％的Sn，不大于8.5重量％的Al，Zn 不大于7重量％的Fe，不超过2.5重量％的Fe和不超过2.5重量％的Ni，余量构成100重量％的Cu加正常夹带 当合金满足其应该具有α（面心立方晶格）单相结构的要求时，杂质产生抵抗海洋生物附着的金属材料。