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Zenith: HDTV (8205 words) |
 | In the digital VSB transmission system described here, there is a flexibility of transmitting any one of five different digital VSB modes (2, 4, 8, 8-trellis, and 16), with the data rate dependent upon the number of discrete levels and whether trellis coding is used. |
| The VSB data constellation is also affected by the rejection filter (8 input levels mapped to 15 output levels), but is compensated for by transmitter pre-coding and receiver post-coding (trellis) processing. |
| In the VSB system, clock recovery is determined from the segment syncs, and the framing code location is reliably known from the framing code detector. |
| VSB :: (705 words) |
| Virtual Sorbent Beds (VSB) is specifically developed to increase the efficiency of mercury removal from coal combustion exhaust (flue gas). |
| VSB increases the carbon per unit volume suspended in the mercury-laden gas, thereby increasing the rate at which mercury is adsorbed. |
| VSB is capable of detecting airborne threats when applied as a biochemical sensor. |
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