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Datacasting: The Industry And The Players

机译：数据广播：行业和参与者

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摘要

When the DTV transition first began, there was a flurry of players trying to launch services that would create new markets or enhance current data distribution for existing services via the 19.39 Mbps DTV spectrum. There were two schools of thought: One was to exploit the bandwidth more fully by pushing data through the DTV spectrum during off-peak hours when broadcasters weren't using much of the spectrum. This obviously wouldn't work for some services―providing high-volume real-time stock quotes, for example. It could work for something like pushing content to PCs in the middle of the night, however, if a user's preference for a particular type of content were known. The other emerging business model involves using a fixed percentage of the spectrum full-time to provide real-time data services.
机译：当DTV过渡首次开始时，有大量的参与者试图通过19.39 Mbps DTV频谱启动服务，以开辟新市场或增强现有服务的当前数据分发。有两种思路：一种是在非高峰时间广播商使用频谱不多的时候，通过DTV频谱推动数据来更充分地利用带宽。对于某些服务，这显然是行不通的，例如，提供大量的实时股票报价。但是，如果知道用户对特定类型的内容的偏爱，它可以像在半夜将内容推送到PC上那样工作。另一种新兴的业务模型涉及使用固定比例的全职频谱来提供实时数据服务。

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