【摘要】 国际电信联盟(ITU)提出的公用电话交换网上的文件传真传输T.30规程,规定了Group3传真的工作过程,整个传真过程分为5个阶段。T.4规程定义了传真传输过程中的压缩编码的格式。本论文通过研究传真过程中各信号的时序、传真过程中用到的数据压缩格式和TIFF文件格式,实现了无纸传真功能。实验证明本程序收发传真正确、可靠。更多还原

【Abstract】 By the International Telecommunication Union(ITU) made a document public switched telephone line T.30 fax transmission protocols,provides the working process of Group3 Fax,the fax process is divided into 5 stages;T.4 facsimile transmission procedures defined in the process of compression format.This design process by studying the fax signal timing of the fax and data compression used in the process of format and TIFF file formats,in the embedded development environment to achieve a paperless faxing.更多还原