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虽然目前的电视机都配有耳机插孔,但因必须使用有线耳机而带来不便。内藏式红外线立体声耳机系统,利用红外线作为载频,采用调频方式(FM)传送左右声道的音频信号,再用成品立体声耳机接收。红外线发射的优点是:在通过云雾、灰尘等充满悬浮粒子的物质时,不易发生散射,有较强的穿透能力,具有不受外界干扰,接收距离有限,没有系统间干扰,容易产生等优点。这项技术首先在我公司生产的TC2975C型彩色电视机上得以应用。
Although the current TV sets are equipped with headphone jacks, but inconveniences must be caused by the use of wired headphones. Built-in infrared stereo headset system, the use of infrared as a carrier frequency, the use of FM (FM) to send the left and right channel audio signals, and then finished stereo headphones to receive. Infrared emission has the advantage of: in the clouds, dust and other particles filled with suspended particles, the scattering is not easy to have a strong ability to penetrate, with no outside interference, the receiving distance is limited, there is no interference between systems, easy to produce advantages . This technology is first applied to the TC2975C color TV manufactured by our company.