Arrangement for automatic switching of the regulating speed of a

Details Arrangement for automatic switching of the regulating speed of a Arrangement for automatic switching of the regulating speed of a

1988-05-11

1989-05-30

Blum, Theodore M.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358159, H03L 700, H04N 504

Patent

active

048356107

ABSTRACT:
An arrangement for automatic switching of the regulating speed of a phase regulating circuit, in which the regulating speed is not switched abruptly. The regulating speed is, instead, switched either discontinuously or continuously, so that it does not attain a high level before the midpoint of the synchronizing pulse. The regulating speed is increased within a synchronizing window to an increasing extent up to the midpoint of the window, whereas the regulating speed decreases to a decreasing extent from that midpoint. The regulating speed of the phase regulating circuit is associated with the horizontal deflection in a television receiver, where interference in the vicinity of the synchronizing pulse has a detrimental effect, particularly near the edges.

REFERENCES:
patent: 4461999 (1984-07-01), Wolf et al.
patent: 4553163 (1985-11-01), Sauer

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