模拟电视向数字电视过渡时期,由于受广播电视体制的制约,模拟彩电已不能满足高清晰度的要求,因此提高图像的清晰度已成为改进模拟彩电的首要任务,逐步渗透和应用数字技术是改进模拟电视的主要手段,包括数字处理和数字控制。数字处理是将模拟信号转化为数字信号,再进行加工和处理。如遥控系统除了一般的遥控功能外,还可 Analog TV to digital TV transition period, due to the constraints of radio and television systems, analog TV has been unable to meet the requirements of high-definition, so to improve the clarity of the image has become the primary task of improving analog TV, the gradual penetration and application of digital technology is to improve The main means of analog TV, including digital processing and digital control. Digital processing is the analog signal into a digital signal, and then processed and processed. Such as remote control system in addition to the general remote control function, but also