Browse Prior Art Database

Indicating Display Power Management State

IP.com Disclosure Number: IPCOM000113554D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Knox, AR: AUTHOR

Abstract

Disclosed is a method of indicating to the user the level of power management a display is in. There are four power management levels defined by the VESA DPMS protocol shown in the table below:

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Indicating Display Power Management State

      Disclosed is a method of indicating to the user the level of
power management a display is in.  There are four power management
levels defined by the VESA DPMS protocol shown in the table below:

      A basic problem with conventional displays is that a single LED
is used to show the various states of power management.  In order to
convey meaningful information the user must understand the indication
given by the LED.  Even with a full understanding, there is ambiguity
in the highest states.  A second problem is that the user must study
the LED for a period of several seconds in order to determine the
power management level.  What is needed is a more intuitive
indication, the meaning of which the user can grasp in the time it
takes to glance at this indication.

      It is proposed that a bargraph or similar device be used to
uniquely show the power management levels.  This may be implemented
using either a "moving dot" (only the highest level is indicated) or
"moving bar" (where all levels up to and including the present level
are indicated) display.  The decoding of the information required to
create this display may be easily accomplished using the data present
on the sync lines of the display since it is these data that are used
to signify the appropriate level of power management to the display
in the first place.