VESA Display Power Management Signaling

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VESA Display Power Management Signaling (or DPMS) is a standard from the VESA consortium for power management of video monitors. Example usage includes turning off, or putting the monitor into standby after a period of idle time to save power. Some commercial displays also incorporate this technology.

History[edit]

VESA issued DPMS 1.0 in 1993,[1] basing their work on the United States Environmental Protection Agency's (EPA) earlier Energy Star power management specifications. Subsequent revisions were included in future VESA BIOS Extensions.

Design[edit]

The standard defines how to signal the H-sync and V-sync pins in a standard SVGA monitor to trigger the monitor's power saving capabilities.

DPMS defines four modes; normal, standby, suspended and off. When in the "off" state some power may still be drawn in order to power indicator lights.

The standard is:

State H-sync V-sync Power Recovery Time[2]
On On On 100% n/a
Stand-by Off On < 80% ~1 Sec.
Suspend On Off < 30W ~5 Sec.
Off Off Off < 8W ~20 Sec.

See also[edit]

References[edit]

  1. ^ "PC User Guide: Chapter 8". Archived from the original on 2011-11-22. Retrieved 2007-04-16.
  2. ^ On a Targa TM 3820 PNLD Monitor

External links[edit]