To transmit text messages, these devices use traditional phone lines, which can transmit a maximum of 56 kilobits per second.

这些设备使用传统电话线发送文字信息，最多每秒发送56 kb。

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Data broadcasting is a technique that can transmit text, graphics, video, audio, data to an intelligent equipment, such as STB.

数据广播是一种能将文本、图形、视频、音频、数据等传输到机顶盒等智能设备的一项技术。

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They found that it was possible to transmit text information in the "spare lines" transmitted on the analogue TV signal.

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And Livescribe has tried since 2007 to popularize its technology, which uses a pen with a tiny, built-in camera and special paper to record and wirelessly transmit text as you write.

WSJ: Pen and Paper Find a Place in the Digital World

And, because the digital signal occupies only 65% of the excess allotted bandwidth, stations can use the leftover spectrum to transmit text information like the artist's name, song title or more advertising.

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