基于PSI/SI的节目滤波控制器的设计与实现

Program specific information (PSI) and service information (SI), is the important part of TS stream, and the service-related information sent to the receiving equipment of the DTV system. Their role is to help the receiving device to select services and events from a TS stream, guide receiver search program and find the components of programs such as video and audio. PSI is defined in the MPEG standard to provide a decoder decoding parameters. SI is defined by the DVB standard information. SI is not only used to provide additional receiver decoder decoding parameters needed to decode the information, also provided information, such as channel name, program information and so on. Program filtering controller is a front equipment in digital television system, mainly used to analyze the PSI / SI and descriptors, and modify them. Then the information is transmitted.