近四年来,美国电缆行业在基础设施建设和改进上的投资额高达600亿美元,其中的大部分直接投资于宽带电缆和数字网络上。这种付出开始得到回报,据美国电缆通信协会年度报告显示,全美家庭的宽带电缆可用比例已经从1999年的33%增长到目前的83%,使用电缆Modem进行宽带接入的用户数近 In the past four years, the U.S. cable industry has invested as much as 60 billion U.S. dollars in infrastructure construction and improvement, most of which invest directly in broadband cable and digital networks. According to the annual report of the American Cable Communications Association, the percentage of broadband cables available to households in the United States has increased from 33% in 1999 to the current 83%, and the number of subscribers using cable Modems for broadband access