Television tuning system with AFT provisions

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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Details

455192, H04N 550

Patent

active

046896856

ABSTRACT:
In a tuning control system for a television receiver, an analog AFT signal is sampled during blanking intervals when the amplitude of the video carrier is relative constant and therefore cannot affect the amplitude of the AFT signal significantly. This reduces the AFT filtering requirements.

REFERENCES:
patent: 4302778 (1981-11-01), Tanaka
patent: 4387400 (1983-06-01), Borg
patent: 4405947 (1983-09-01), Tults et al.
patent: 4429415 (1984-01-01), Chin
patent: 4439787 (1984-03-01), Mogi

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