Apparatus for mixing video signals having different numbers of lines
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United States of America Patent
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-
Jul 18, 1995
Grant Date -
N/A
app pub date -
Dec 17, 1993
filing date -
Dec 17, 1992
priority date (Note) -
Expired
status (Latency Note)
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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.
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