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                                              1. 高清時代網
                                                家庭影院 上門服務
                                                有線電視是我們大伙耳熟能詳的一個詞,也伴隨著人們十幾年的時間了。通常有線電視是通過一根白色的射頻線來傳輸信號從而收看電視節目,而且在現在仍然是主要的家庭電視的接入方式。而最早的一批機頂盒也是通過這種接入方式,然后再由機頂盒的分量活AV線連接到電視機上的。

                                                電視常識科普系列:一張圖告訴你有線電視信號是什么

                                                然而采用有線方式傳輸的電視節目仍然屬于模擬信號并不代表著能夠直接收看高清節目,加了機頂盒僅僅是將模擬信號變成數字信號。現在有的幾個正在測試的數字高清信號電視臺的節目也僅僅是在測試,而要真正的收看數字高清頻道可能要收費。 返回高清時代首頁>>


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                                                                                          1. "幸运快三"开奖结果

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