Video display unit with switchable mode power supply responsive to active sync signals
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United States of America Patent
Stats
-
Feb 4, 2003
Grant Date -
N/A
app pub date -
Oct 9, 1998
filing date -
May 8, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A video display unit includes a built-in switched mode power supply and control means, responsive to the presence of one or more active sync signals (Hsync, Vsync), to switch on the display unit from the DPMS OFF mode, in which it consumes a minimum amount of power and to which it is switched in the absence of any active sync signal. Peak sensing circuitry detects that at least one sync signal is active, when switch is closed. A switch disconnects the SMPS controller from the start-up power source until the optocoupler is driven.
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Cited Art Landscape
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