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Essential Guide to Home Networking Technologies, The by GERARD O'DRISCOLL

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PERSONAL VIDEO RECORDERS

The digital television industry has been abuzz the past couple of months about a new category of product called personal video recorders—PVRs, for short. PVRs are similar to traditional VCRs in many ways—they record, play, and pause TV shows and movies. There are, however, a number of fundamental differences.

Instead of using traditional videotapes, PVRs use a large hard disk along with sophisticated video compression and decompression hardware to record television streams. The PVR software is optimized to allow recording and playback at the same time. This lets the user pause live television, do instant-replay, and quick-jump from place to place. If you are using a VCR tape, you must fast-forward and rewind to move from ...

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