H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/38
H04N 5/76 (2006.01) H04N 7/00 (2006.01) H04N 9/11 (2006.01) H04N 9/79 (2006.01) H04N 9/83 (2006.01) H04N 9/898 (2006.01)
Patent
CA 1089976
ABSTRACT OF THE INVENTION Filters are coupled to receive an uncorrected composite color television signal, which signal has been sub- jected to recording and reproducing operations and processed to have incoherent luminance and chrominance compo- nents, with the chrominance component color corrected. The filters separate the composite signal into its luminance and chrominance components. The chrominance component is coupled to a decoder to prepare it for subsequent encoding relative to a chrominance subcarrier reference signal that is coherent with the luminance component. The chrominance subcarrier reference signal is provided by a generator that is frequency and phase adjusted relative to the luminance component. A following encoder receives the decoded chrominance component and reference signal. The encoder responsively operates to provide a newly encoded chrominance component stabilized to the reference signal. This causes the newly encoded chrominance component to be coher- ent with the luminance component. Both components are then com- bined and coupled to a conventional line-to-line time-base cor- rector for correcting any time-base errors -that are present in the combined components. -2a-
229993
Ampex Corporation
Macrae & Co.
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