Code signal blanking apparatus

Details Code signal blanking apparatus Code signal blanking apparatus

1980-06-23

1982-06-22

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358120, 358122, 358123, H04N 716, H04K 104

Patent

active

043365540

ABSTRACT:
A code signal blanking apparatus comprising a switching means operative during a given period of a vertical blanking period of a television signal and a reference level setting means for producing an output of the reference level during said given period when the switching circuit is operative. A code signal is blanked by keeping a video signal level of the television signal at the reference level during said given period of the vertical blanking period of the television signal.

REFERENCES:
patent: 3478166 (1969-11-01), Reiter et al.
patent: 3924059 (1975-12-01), Horowitz
patent: 4022972 (1977-05-01), Pires
patent: 4222068 (1980-09-01), Thompson
patent: 4257065 (1981-03-01), Papay

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