公开(公告)号：US06216171B1

公开(公告)日：2001-04-10

申请号：US09021828

申请日：1998-02-11

申请人： Hiroaki Isono ,  Toshimichi Nishimura

发明人： Hiroaki Isono ,  Toshimichi Nishimura

IPC分类号： G06F1516

CPC分类号： H04N7/17309 ,  H04L12/2801

摘要： An information-supply control apparatus and method uses a cable modem. The cable modem has one I/O connector attached to a coaxial cable coupling the cable modem with the cable system's head end. Another I/O connector is attached to a subscriber's local area network (LAN). The cable modem prioritizes its processing of packets as follows. Packets received from the cable system head end that are addressed to devices on the subscriber LAN are given the highest priority. Packets received from the cable system head end that are addressed to the cable modem itself are given the second highest priority. Packets received from the subscriber LAN that are to be transferred to the coaxial cable are given the third highest priority. Finally, packets that are received from the subscriber LAN that are to be transferred back to the subscriber LAN are given the fourth highest priority. The cable modem also determines whether a received packet has overflowed its allocated buffer. Upon detecting buffer overflow, the cable modem discards the overflow data.

摘要翻译： 信息供应控制装置和方法使用电缆调制解调器。 电缆调制解调器具有一个I / O连接器，其连接到将电缆调制解调器与电缆系统的头端连接的同轴电缆。 另一个I / O连接器连接到用户的局域网（LAN）。 电缆调制解调器按照以下方式优先处理数据包。 从电缆系统头端接收的寻址到用户LAN上的设备的数据包被给予最高优先级。 从电缆系统头端接收到的数据包是寻址到电缆调制解调器本身的第二高优先级。 从用户LAN接收的要传输到同轴电缆的数据包被赋予第三高优先级。 最后，从用户LAN接收到要传送回用户LAN的分组被赋予第四高优先级。 电缆调制解调器还确定接收的分组是否已经溢出其分配的缓冲器。 检测到缓冲区溢出时，电缆调制解调器会丢弃溢出数据。