论文部分内容阅读
数字电视是指把模拟电视信号转变为数字信号并进行处理、存贮、传输和显示的系统.与模拟电视相比,它具有下列优点:传输时抗干扰性强,且易于时分多工传输;处理时失真不易积累,且便于多功能处理;存贮记录方便,且经多次存取或录放,质量也不恶化;设备可靠稳定,且集成度高、调整简单.数字电视虽然也有传输频带宽、电路复杂、成本昂贵等缺点,但随着
Digital television refers to the system that converts analog television signals into digital signals for processing, storage, transmission and display.Compared with analog TV, it has the following advantages: strong anti-interference in transmission and easy time-division multiplex transmission; Processing distortion is not easy to accumulate, and easy to multi-function processing; storage and recording convenience, and after repeated access or recording, quality is not deteriorated; equipment, reliable and stable, and high integration, simple adjustment. Although there are digital TV transmission bandwidth , Circuit complexity, cost and other shortcomings, but with