Time base corrector for eliminating time base fluctuations in a

Details Time base corrector for eliminating time base fluctuations in a Time base corrector for eliminating time base fluctuations in a

1991-05-01

1993-04-27

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358158, 358320, 358324, H04N 989

Patent

active

052067262

ABSTRACT:
A time base corrector of composite video signal using memory. In the back porch and front porch of a composite video signal, offset voltages having polarities opposite to each other and a level corresponding to the level of a phase error signal are added to the phase error signal and are used as an input signal of a VCO for generating a writing clock. As the result, jitter components which cannot be removed by the PLL only can be eliminated.

REFERENCES:
patent: 4733311 (1988-03-01), Yoshinaka
patent: 4792845 (1988-12-01), Judge
patent: 4881121 (1989-11-01), Judge

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