The Construction Of DMB-T/H STB

In recent years, the development of digital television (DTV) is very rapid. Such as in china, the office of Beijing city declared that the broadcast of 2008 Olympic Games will use HDTV. Besides, more and more citys in china transform their TV system to DTV. Accord to that, the development of digital television (DTV) is currrently in a thriftily state. Several years ago, the government of china have anounced that china will use DVB-C and DVB-S. But refer to Terrestrial DTV standard, the government haven't made the decision. until the summer of 2006, the government proclaim that china will use DMB-T/H as her Terrestrial DTV standard which base both on Tsinghua's DMB-T and Sjtu's ADTB-T. Just in such situation, this paper describe how to construct a STB developing platform which base on Fujitsu's SmartMPEG decode-chip and LGS-8813-A1 the software development platform based on MetaWare. Then we designed STB which perfer to DMB-T/H standard. Then in order to enforce the extensibility of the system and make FLASH storage more simple and efficient we designed a FLASH file-system for the system. For the sake of improving on handle data, we translate SQLITE database into system.Most of STB developing platform providers haven't implement FLASH file-system in their product. So the soft-engineer have to manage FLASH storage by themselves, that is so complicated and lack of efficiency. In this paper, will introduce how to design a FLASH file-system which will settle the most of problems in FLASH storage. Then decribe the process of test and the result of test.Because STB have to handle multi-type of table with complicate relationship between them, several of these contain huge byte of data. But the capacity of handle data of the CPU of STB is limited, the method use chain to store data is not work very well. Sometimes the system response so slowly that user couldn't endure it.In the fifth chapt of this paper, we describe the process of tranplateing a embeded database named SQLITE into STB, which perform wondfully on hanlding data in STB. Then decribe decribe the process of test and the result of test. After that introduce how to use SQLITE for EPG management.