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通过数字电视通过宽带网络取代互联网电视机顶盒应用
2022-07-06 12:56:00 【全栈程序员站长】
大家好,又见面了,我是全栈君。
笔者:朱金灿
资源:http://blog.csdn.net/clever101
如今一般宽带网络和数字电视都已经走进千家万户。
近期我发现全然能够网络电视机顶盒通过宽带网络来取代数字电视。
如今大多的网络电视机顶盒大多採用安卓系统,通过有线网络或无线网络来接收网络数据,然后把网络数据转化为电视信号,依照如今一般的网速,流畅观看电视不成问题(网上的一种说法是联通2M的网速就能达到)。
网络电视机顶盒一般能提供两种接口:相应老式电视机的AV复合视频接口,例如以下图:
AV复合(Composite)视频接口是眼下在视听产品中应用得最广泛的接口,属模拟接口,该接口由黄、白、红3路RCA接头组成。黄色接头传输视频信号。白色接头传输左声道音频信号,红色接头传输右声道音频信号。
下图是AV线:
以及相应高清电视及电脑显示器的HDMI接口。
HDMI是新一代的多媒体接口标准,全称是High-DefinitionMultimedia Interface,中文意思为高清晰多媒体接口。为19针数字接口,能够同一时候传送视频和音频信号。例如以下图:
下图是HDMI线:
也就是网络机顶盒也能够通过HDMI线连接电脑显示器来收看电视节目。
以下我们分析下成本:依照北京地区歌华有线一个月18块的数字电视费(2014年价格),一年就是216元。
而廉价的网络机顶盒廉价的有两百块左右的。一个网络机顶盒一般至少能够用两年。
毫无疑问。办一个宽带网络既能上网又能看电视更为划算。
參考文献:
1. 基本介绍电视接口
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