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数据广播虽然是一种通信成本很低的信息发布方式,但是并非所有的信息提供业务都适合于利用这种方式.数据广播最明显的缺点,即缺少交换双向通信的功能是人们很容易看到的,但数据广播的一项隐蔽性的缺点却容易为人们忽略,这就是很容易向用户灌入超过用户接收消化能力的过量数据,而浪费用户大量精力.用户需要的是信息,而不是过量的数据.因此数据量大的广播业务必须要带有很好的数据存贮功能,筛选加工功能才会成功.
Although data broadcasting is a way of distributing information with a low cost of communication, not all information providing services are suitable for this use. The most obvious drawback of data broadcasting is that it is easy to see that the lack of exchange of two-way communication , But one of the hidden drawbacks of data broadcasting is that it is easy for people to ignore it, which is that users can easily pour too much data over the user’s ability to receive digests, wasting a lot of energy on the part of users who need information rather than overdose Of the data.Therefore, a large amount of data broadcast services must have a good data storage capabilities, screening processing functions will be successful.