Circuit arrangement for adjusting the direct current level of a

Details Circuit arrangement for adjusting the direct current level of a Circuit arrangement for adjusting the direct current level of a

1982-05-03

1984-09-04

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 516

Patent

active

044700660

ABSTRACT:
A charging current source and a discharging current source are alternately connected to an input capacitor. By choosing the current ratios it is possible to switch a reference level located in the signal range, for example the black level in a television signal, in the circuit, without the necessity for interval keying.

REFERENCES:
patent: 3985954 (1976-10-01), Kuniyoshi et al.

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