Apparatus for mixing video signals having different numbers of l

Details Apparatus for mixing video signals having different numbers of l Apparatus for mixing video signals having different numbers of l

1993-12-17

1995-07-18

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 13, 360 32, 360 371, 348565, 348584, 348589, 348600, H04N 576

Patent

active

054346762

ABSTRACT:
A video signal mixing apparatus for mixing a playback composite video signal produced by playing a recording medium and a graphics composite video signal generated on the basis of video data read from a memory device, wherein a vertical synchronizing signal of the playback composite video signal is forcedly generated in response to a vertical synchronizing signal of the graphics composite video signal to make the number of horizontal scanning lines of the playback composite video signal coincident with the number of horizontal scanning lines of the graphics composite video signal.

REFERENCES:
patent: 4580165 (1986-04-01), Patton et al.
patent: 4835623 (1989-05-01), Okano et al.
patent: 5051817 (1991-09-01), Takano
patent: 5097348 (1992-03-01), Suetaka
patent: 5130966 (1992-07-01), Yoshio et al.
patent: 5155595 (1992-10-01), Robinson
patent: 5227862 (1993-07-01), Choi

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