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Digital television was called following the third generation TV after the black-and-white and color television , because it uses digital compression coding technology deal with video , audio signal , the TV broadcast with a new look , not only to improve the quality of the video , audio , and provides the flexibility and diversity of the business . Terminal receiving digital TV platform , can receive the traditional TV business can not be achieved , for example : you can receive e-mail , online shopping , Internet browsing , video on demand , telemedicine , distance education , and so on . The trend of the development of digital television is to achieve a high -definition television . At present , China's urgent need for the development of digital TV standards , key technologies with independent intellectual property . These are an important factor in promoting China 's digital TV industry . Electronic Program Guide (EPG) is an important part of the digital TV system , the electronic program guide is provided to the user -friendly user interface , users can easily get some business he needed to , electronic program guide business is good or bad , in a very large extent, will directly affect the economic income of the service provider . The electronic program guide system comprising a front - end system and the receiving end system . Front-end system , including SI server is responsible for the generation of SI data , the receiving end is responsible for the SI data decoding , and establish local SI database , through a user-friendly interface and user interaction . China 's digital TV technology is not mature , a lot of the technology is still in the research stage , and digital TV standards are also being developed which we made ??some preliminary research on business information and digital TV electronic program guide . Elaborated DVB SI standards , and electronic program guide system to achieve a PC - based simulation . SI data stored in the data structure is configured to create the local database in the SI ; EPG interface display technology , to achieve the display of the EPG interface , EPG interface synthesized by many graphics elements , synthetic follow certain steps in compliance with the rules of the Porter-Duff carried out , the transfer of the state of the EPG is a mechanism driven by the message response .
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