Browse Prior Art Database

Human Centered Dynamic Power Management Method

IP.com Disclosure Number: IPCOM000117201D
Original Publication Date: 1996-Jan-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Horikoshi, H: AUTHOR

Abstract

Disclosed is a method, that may be implemented into a Personal Computer (PC), to provide the efficient power management by detecting the presence of an operator. If a sensor does not detect the presence of the operator, the system goes into power save mode. On the other hand, if the sensor detects the presence of the operator, the system asks the password before resuming from power save mode for security. If the password is entered correctly, the system resumes from power save mode and re-starts the task as it was.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 80% of the total text.

Human Centered Dynamic Power Management Method

      Disclosed is a method, that may be implemented into a Personal
Computer (PC), to provide the efficient power management by detecting
the presence of an operator.  If a sensor does not detect the
presence of the operator, the system goes into power save mode.  On
the other hand, if the sensor detects the presence of the operator,
the system asks the password before resuming from power save mode for
security.  If the password is entered correctly, the system resumes
from power save mode and re-starts the task as it was.

      According to this invention, when the operator is in front of
the screen, the sensor detects him/her and the system does not enter
power save mode.  Fig. 1 shows that the sensor does not detect the
operator (1) if he/she goes away from the operator position.  Then
the operator presence bit will be off (2).  Dynamic Power Management
(DPM) code turns off the screen (3) which means power save mode.
When he/she comes back to the operator position in front of the
screen, the sensor detects him/her(1).  Then the Human Presence
Interrupt occurs (4) and DPM code detects it as an external event
through interrupt source table (5) (Fig. 1).  DPM code turns on the
screen (6) and request the password (7).  If the password is inputted
correctly, DPM code resumes the original screen before power save
mode (Fig. 2).  The sensor is located in either the center of the
top/bottom side of the front beze...