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    • 1. 发明授权
    • Picture signal transmission system
    • 图像信号传输系统
    • US3940555A
    • 1976-02-24
    • US390187
    • 1973-08-21
    • Kitsutaro AmanoHiroshi SasakiTatsuo Maruyama
    • Kitsutaro AmanoHiroshi SasakiTatsuo Maruyama
    • H04B1/66G06T9/00H04N1/41H04N7/32H04N7/34H04N7/50H04N5/38
    • H04N19/593H04N19/61
    • A picture signal transmission system for transmitting after coding a picture signal obtained by scanning at least one picture to be transmitted, in which a difference between a representative level value of each picture element unit formed by at least one picture element and a forecast value obtained in accordance with a predetermined rule and based on a representative level value of adjacent ones of said picture element units is detected, and in which first level information and second level information are transmitted. The first level information indicates, for each picture element by a bit of binary information, whether or not the difference exceeds a predetermined threshold value for a group of picture elements corresponding to a predetermined area of the picture. The second level information indicates level information of particular picture elements on each of which said difference exceeds the threshold value.
    • 一种图像信号传输系统,用于在编码通过扫描至少一个要发送的图像获得的图像信号之后发送,其中由至少一个图像元素形成的每个图像元素单元的代表性电平值与在 根据预定规则并且基于相邻的所述像素单元的代表性电平值被检测,并且其中发送第一电平信息和第二电平信息。 第一级信息针对每个图像元素以二进制信息的位表示对于与图像的预定区域相对应的一组图像元素是否超过预定阈值。 第二级别信息指示每个所述差异超过阈值的特定图像元素的级别信息。