Receiving system for facsimile and the like
    7.
    发明授权
    Receiving system for facsimile and the like 失效
    传真系统等

    公开(公告)号:US4047228A

    公开(公告)日:1977-09-06

    申请号:US604119

    申请日:1975-08-13

    CPC分类号: H04N1/415

    摘要: The present invention provides a receiving system, for a facsimile system wherein when a large portion of a scanning line of an original pattern consists of only black (or only white), that portion is not transmitted in order to reduce the transmission time. The received facsimile signal has three families, synchronizing signals, group weight indicator signals and picture signals. The present receiver comprises: a means receiving said synchronizing signal for discriminating said synchronizing signal; a means receiving said group weight indicator signals following said synchronizing signal, for storing said group weight indicator signals in a temporary memory; a means reading said group weight indicator signals from said temporary memory for deciphering the signals thus read, prior to recording said picture signals on a recording paper; a means performing predetermined addition on a selective address register, based on the result of said deciphering; a means immediately distributing and applying picture signals to selected recording elements in accordance with addressing by said selective address register; a means recording said picture signals on a recording paper, and; a means performing auxiliary scanning during a period for receiving said synchronizing signal and said group weight indicator signals.

    摘要翻译: 本发明提供了一种用于传真系统的接收系统,其中当原始图案的扫描线的大部分仅由黑色(或仅白色)组成时,该部分不被传输以便减少传输时间。 接收到的传真信号有三个系列,同步信号,组重量指示信号和图像信号。 本接收机包括:接收所述同步信号以识别所述同步信号的装置; 接收所述同步信号之后的所述组重量指示符信号的装置,用于将所述组重量指示符信号存储在临时存储器中; 在将所述图像信号记录在记录纸上之前,读取来自所述临时存储器的所述组重量指示信号的装置,用于对所读出的信号进行解密; 基于所述解密的结果,在选择性地址寄存器上执行预定加法的装置; 根据所述选择性地址寄存器的寻址立即将图像信号分配并应用于所选记录元件的装置; 在记录纸上记录所述图像信号的装置, 在用于接收所述同步信号和所述组重量指示符信号的时段期间执行辅助扫描的装置。