扩展到50个或更多电视频道的操作系统的技术考虑

Michael F. Jeffers
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引用次数: 3

摘要

在过去的六、七年里,许多有线电视系统都利用了该行业供应商提供的300 MHz设备,运营商规划了他们的布局,以允许最终传输35个电视频道。混合集成电路和“四元”电路的信号处理能力的提高,以及更大、更高效的同轴电缆,与信道负载的增加保持同步。有线电视运营商使用改进的系统布局方法,如集线器,以及使用AML进行集线器互连,为用户提供高质量的图片。很少有人利用锁相带来的主观性能优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Technical Considerations for Operating Systems Expanded to Fifty or More Television Channels
Many CATV systems built in the last six or seven years took advantage of the 300 MHz equipment available from suppliers to the industry, and operators planned their layouts to allow for the ultimate carriage of thirty-five television channels. The improved signal handling capability of hybrid IC's and the "quad" circuit, together with larger and more efficient coaxial cables, kept pace with this increased channel loading. Improved system layout approaches, such as hubbing - in conjunction with the use of AML for hub interconnect - were tools used by the CATV operator to deliver quality pictures to their subscribers. Few took advantage of the subjective performance benefits available from phase lock.
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