Video signal controller for use with a multi-sync monitor for displaying a plurality of different types of video signals
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United States of America Patent
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Oct 8, 1996
Grant Date -
N/A
app pub date -
Dec 29, 1993
filing date -
Dec 29, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A video signal controller is used with a dual sync monitor of a digital computer. The video signal controller has a tuner to generate conventional television signals. The signals from the tuner and from the computer are supplied to a multiplexer which switches between them and supplies the output signal to a dual sync monitor. The controller has three modes of operation. In a first mode, conventional television signals are displayed on the dual sync monitor. In a second mode, conventional computer signals are displayed on the dual sync monitor. Finally, in a third mode, multi video signals may be displayed to achieve, for example, picture-in-picture for display on the monitor. Finally, a method of processing the television signals for picture-in-picture display which greatly reduces the overhead required by the CPU is also disclosed.
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