摘要
为了简化卫星数字电视接收机的电路,降低接收机的成本,同时又能满足收视要求,提出了单芯片电路设计方案。使用超大规模多功能芯片MB87L3356为核心,辅以调谐解调器、视频编码器、音频DAC等少量外围元器件,就能构成廉价型卫星数字电视接收系统。实践表明,该系统能接收950~2150MHz范围内的全部免费频道,同时具有较好的画质和音质。且软件升级方便,是一款极具应用前景的电路。
In order to simplify the circuit of the satellite digital TV receiver, reduce the cost of the receiver, and can meet the requirements of the viewing, the scheme of a single chip circuit design is proposed.Using the MB87L3356 as the core, with the help of tuning demodulator, video en- coder, audio DAC and a small number of peripheral components, it can form an inexpensive satellite digital TV receiving system.The practice shows that the system can receive all the free channels in the range of 950~2150MHz, and has better image quality and sound quality at the same time.And It is easy to upgrade software, and is a very promising application of the circuit.
出处
《电子世界》
2017年第8期62-64,共3页
Electronics World
