该标准规定了数字视频广播中文业务信息（SI）数据，这些数据是数字视频广播码流的组成部分，帮助用户从码流中选择业务和/或事件的信息，使综合接收解码器（IRD）能自动设置可供选择的业务。-The standard specifies the digital video broadcasting in Chinese business information (SI) data, digital video broadcasting stream components to help users stream selected from the business and/or event information, so integrated receiver decoder (IRD) automatically set the options business.