Virtual Channel
Nbc, Set -Top Box, Television Channel
978-613-9-09883-5
6139098831
180
2012-01-09
54.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In telecommunications, a logical channel number (LCN), also known as virtual channel, is a channel designation which differs from that of the actual radio channel (or range of frequencies) on which the signal travels. The term is most often applied to television, where digital television (DTV) channels may operate on different physical channels than the displayed channels. A station branded as Channel 8, for example, might actually use channel 32 for its ATSC, DVB or ISDB transmission, but a virtual channel map or virtual channel table (VCT) allows viewers to tune in the station on channel 8, displayed as 8.1 on a digital set. DTV tuners have a menu item that scans all channels for this information and stores it in memory for instant access later on.
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Общие социальные науки
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