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随着电子元器件、通信、航天、材料和加工等技术的重大突破,近十多年来电视广播技术突飞猛进,其发展大致分为:完善现行电视广播体制、采用新的电视广播媒质和探求下一代电视广播方式三个方面.一、完.现行电视广播休制现行电视广播体制就是指地面无线电视广播。由于娜谱安排、扫描格式和传送彩色信息方式的不同,现行电视广播有各种不同的制式。我国采用的是P人卜D制式。由于电视信号在频域和时域都有空隙,所
With major breakthroughs in technologies of electronic components, telecommunications, aerospace, materials and processing, the technology for television broadcasting has made rapid advances over the past decade or so. Its development can be broadly divided into: improving the existing television broadcasting system, adopting new television broadcasting media and exploring A generation of television broadcasting in three ways. First, the end of the current television broadcasting to restrain the current television broadcasting system refers to terrestrial radio and television broadcasting. Due to the difference in the arrangement of the spectrum, the scanning format and the way in which color information is transmitted, there are various formats of the existing television broadcasting. China is using P people BU D system. As the television signal in the frequency domain and time domain have gaps