Synchronizing signal active filter and method

Details Synchronizing signal active filter and method Synchronizing signal active filter and method

1993-11-01

1996-06-18

Metjahic, Safet

Television

Synchronization

Sync separation

348532, 348525, H04N 508

Patent

active

055283039

ABSTRACT:
An integrated active filter and sync separator circuit operates on precision internal reference sources to set the filter cut off frequency as a function of resistance of an external resistor. The active filter eliminates the source of sync tip crushing attributable to conventional clamping circuits associated with sync pulse detectors, and also provides sync pulses substantially devoid of time-variant jitter.

REFERENCES:
patent: 3706847 (1972-12-01), Smeulers
patent: 4237487 (1980-12-01), Ikeda et al.
patent: 4468625 (1984-08-01), Tandart et al.
patent: 4535358 (1985-08-01), Duijkers
patent: 4698679 (1987-10-01), Balaban et al.

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