Sync compensated AGC system for VSB receiver

Details Sync compensated AGC system for VSB receiver Sync compensated AGC system for VSB receiver

1996-10-07

1998-06-09

Burgess, Glenton B.

Television

Image signal processing circuitry specific to television

Gray scale transformation

348682, 375345, 4552341, 455254, 330278, H04N 552

Patent

active

057643091

ABSTRACT:
A technique and apparatus for developing AGC voltage in a receiver capable of receiving VSB signals that do not have the average magnitudes of the data symbol levels and the sync symbol levels related so as to produce the same average level. One technique eliminates the sync symbols from determination of the AGC voltage. A preferred technique corrects for the different symbol levels of the sync by multiplexing in an offset at the proper time or multiplying the sync symbols by a compensating factor.

REFERENCES:
patent: 4625240 (1986-11-01), Yablonski et al.
patent: 5267272 (1993-11-01), Cai
patent: 5508748 (1996-04-01), Krishnamurthy et al.
patent: 5565932 (1996-10-01), Citta et al.
patent: 5636250 (1997-06-01), Scarpa
patent: 5659582 (1997-08-01), Kojima et al.

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