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1. 发明授权

US4291339A Facsimile transceiver 失效
标题翻译：传真收发器
公开(公告)号：US4291339A
公开(公告)日：1981-09-22
申请号：US906013
申请日：1978-05-15
申请人： Mutsuo Ogawa , Noboru Murayama , Akira Konishi , Norisada Takeuchi
发明人： Mutsuo Ogawa , Noboru Murayama , Akira Konishi , Norisada Takeuchi
IPC分类号： H04N1/40 , H04N1/411 , H04N7/12
CPC分类号： H04N1/40068 , H04N1/411
摘要： A scanner scans an original document in two orthogonal directions and produces binary data signals representing the document. An extractor combines each two scan lines into one scan line by taking the logical sum of the data signals in corresponding positions in the two original scan lines. Each second data signal is removed. The data signals in even positions in one line are removed and the data signals in odd positions in the succeeding line are removed, thereby removing the data signals in a zig-zag manner. The data signals so processed are subjected to run-length encoding. In a receiver, the data signals are run-length decoded and fed into an interpolator which senses the data signals and inserts data signals into the spaces from which data signals were removed in accordance with a predetermined logical function. The interpolator controls a printer to print each scan lines twice to reproduce the original document.
摘要翻译：扫描仪在两个正交方向上扫描原始文档，并产生表示文档的二进制数据信号。提取器通过在两个原始扫描线中的相应位置取数据信号的逻辑和来将每条扫描线组合成一条扫描线。每个第二数据信号被去除。去除一行中偶数位置的数据信号，去除后续行中奇数位置的数据信号，从而以锯齿形的方式去除数据信号。如此处理的数据信号进行游程长度编码。在接收机中，数据信号被游程长度解码，并被馈送到内插器中，该内插器检测数据信号，并根据预定的逻辑功能将数据信号插入数据信号被去除的空间中。内插器控制打印机打印每条扫描线两次以再现原始文档。

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