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16∶ 9规格是 HDTV确定的宽高比 ,也是数字标清电视的一种选择。其类似于宽银幕电影的视觉享受 ,无疑对观众具有很大的吸引力。然而 ,HDTV和 16∶ 9数字标清电视的普及似乎还有相当长的路要走。在目前许多电视台都购买了 4∶ 3和 16∶ 9两种宽高比可切换的数字摄像机和切换台的情况下 ,在目前有线电视传输、无线发射还基本都是模拟设备的情况下 ,在电视台模拟和数字设备 (包括中心制作和卫星传输 )混合共存的情况下 ,是否可能在几乎不增加投资的前提下提前开展 16∶ 9电视服务 ?对此 ,本文作者进行了研究和试验 ,形成了初步结论
The 16: 9 format is the HDTV-determined aspect ratio and is also an option for digital flat-screen TVs. It is similar to the visual enjoyment of widescreen movies, no doubt the audience has great appeal. However, there seems to be a long way to go in the popularity of HDTV and 16: 9 digital SDTV. At present, many television stations have purchased 4: 3 and 16: 9 aspect ratio switchable digital video cameras and switchers. In the current case that cable television transmission and wireless transmission are all basically analog devices, Is it possible to advance 16:9 TV service with little or no additional investment under the coexistence of analogue and digital equipment (including center production and satellite transmission)? In response, the author conducted research and experiments to form Preliminary Conclusions