Pulse Interval and Width Modulation for Video Transmission

Mitsutake Sato;Masashi Murata;Toshihiko Namekawa
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引用次数: 16

Abstract

This paper proposes new pulse analog modulation system; Pulse Interval and Width Modulation suitable for light emitting diodes. In this system pulses have information on both their width and interval between them. Pulse Interval and Width Modulation is characterized by the following compared with Pulse Interval Modulation. First: Pulse repetition frequency is reduced by one half. Second: Duty ratio is 50 % on the average. Third: More power is needed while carrier to noise ratio could be improved instead. The paper shows how it works and comparison with another pulse analog modulation such as Pulse Frequency Modulation or Pulse Interval Modulation. The paper also shows an experiment of twin channel transmission employing two light emitting diodes, two optical fiber transmission lines and two PIN photodiodes as an example of application of Pulse Interval and Width Modulation.
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用于视频传输的脉冲间隔和宽度调制
本文提出了一种新的脉冲模拟调制系统;适用于发光二极管的脉冲间隔和宽度调制。在这个系统中,脉冲具有关于它们的宽度和它们之间的间隔的信息。与脉冲间隔调制相比,脉冲间隔和宽度调制的特点如下。第一:脉冲重复频率降低一半。第二:占空比平均为50%。第三:需要更多的功率,而载波噪声比可以提高。本文介绍了它的工作原理,并与其他脉冲模拟调制(如脉冲频率调制或脉冲间隔调制)进行了比较。本文还展示了一个使用两个发光二极管、两条光纤传输线和两个PIN光电二极管的双通道传输实验,作为脉冲间隔和宽度调制的应用示例。
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Airspace Fields Due To Signal Leakage From Cable Television Systems Compact TV Channel Filters in the UHF Band Microcomputer Aided Power Design For CATV Amplifier Call for Papers and Information for Authors 1979-1980 Index IEEE Transactions on Cable Television Vols. CATV-4-CATV-5
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