Video signal inverting circuit

Details Video signal inverting circuit Video signal inverting circuit

1984-02-10

1986-12-16

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358171, H04N 514

Patent

active

046301160

ABSTRACT:
A video signal inverting circuit, wherein a pedestal level of an output signal is selectively changed between a posi-mode and a nega-mode. The pedestal level of the output video signal is set equal to the pedestal level of the posi-mode output video signal in the nega-mode in accordance with a nega-mode/posi-mode control signal. In spite of the nega-mode/posi-mode control signal, a level setting circuit for the posi-mode is used during horizontal blanking period in the nega-mode.

REFERENCES:
patent: 2825757 (1958-03-01), Dennison et al.
patent: 3644668 (1972-02-01), Reeber
patent: 4022972 (1977-05-01), Pires
patent: 4257065 (1981-03-01), Papay

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