PBS wants to make delivering a one-hour high-definition documentary to its member stations as easy as sending them a text e-mail. So the public broadcaster has issued a "request for proposal" (RFP) for an Internet Protocol (IP)-based system that would transmit programs as compressed digital files to more than 180 public-television stations, instead of sending them via satellite as real-time program feeds that need to be physically recorded by a video server or tape deck.
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