Television synchronizing pulse generating system

Details Television synchronizing pulse generating system Television synchronizing pulse generating system

1975-12-19

1976-11-30

Richardson, Robert L.

Telegraphy

Systems

Line-clearing and circuit maintenance

H04N 506

Patent

active

039951120

ABSTRACT:
A generator system for producing advanced mixed synchronizing pulses and comprising an equalizing pulse detector capable of detecting the presence of a first equalizing pulse of a mixed synchronizing pulse received at its input and a broad pulse generator. Delay means are provided for inhibiting the generation of the broad pulses for a preset period after the detection of the first equalizing pulse. The delay period is less than the period between the first equalizing pulse and the first broad pulse received whereby the broad pulses from the generator are producible in advance of the broad pulses received at the generator input. The generated pulses are added to the original mixed sync. pulse train whereby a mixed sync. pulse train is producible at the generator system output in which the original broad pulses and some of the equalizing pulses are replaced by the generated broad pulses.

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