Field decision correction apparatus

Details Field decision correction apparatus Field decision correction apparatus

1991-06-06

1992-09-29

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358152, H04N 504

Patent

active

051517868

ABSTRACT:
In accordance with the present invention, a vertical synchronizing pulse is compared with output of a field decision circuit by using a frequency division circuit for exercising frequency division with a ratio of 1/2. Even if an error is caused in the field decision circuit, therefore, a field pulse every vertical synchronizing can be outputted accurately.

REFERENCES:
patent: 3634623 (1972-01-01), McMann, Jr. et al.
patent: 4611228 (1986-09-01), Machida et al.

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