<p><span class="javascript" id="text634781">各位有谁研究过IUT-v.27协议，里面关于扰码器有这么一句话，“A self-synchronizing scrambler/descrambler having rhe generating polynomial: 1+x^-6+ x^-7 with additional guards against repeating patterns of 1,2,3,4,6,8,9 and 12 bits, shall be included in this modem.” 这句话是什么意思啊？<br/>谢谢各位！<br/>示意图如下： </span></p><p><span class="javascript"><img alt="" src="http://bbs.cnii.com.cn/attachments/32900942_q9BfRcwe3NT6.jpg" width="806" border="0" resized="resized" pop="点击在新窗口查看全图
CTRL+鼠标滚轮放大或缩小" style="CURSOR: hand;"/> </span></p>