Television signal transmission system with carrier offset compen

Details Television signal transmission system with carrier offset compen Television signal transmission system with carrier offset compen

1991-03-11

1993-01-19

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 13, 358133, 375 18, H04N 704, H04N 700, H04N 1104

Patent

active

051811120

ABSTRACT:
A television signal transmission system is used for transmitting an N-level video related data signal. The data signal is processed prior to transmission such that the majority of N-level symbols comprise a non-negative level for facilitating receiver lock-up. An in-phase pilot component may be added to the transmission by D.C. offsetting the processed signal to further facilitate receiver lock-up. The processed signal is precoded by a modulo-N filter and postcoded by a complementary linear filter in the receiver to reduce interfering NTSC components. In the absence of interfering NTSC components, a complementary modulo-N postcoding filter may be used in the receiver to provide improved signal to noise performance.

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