公开(公告)号：JPH09128105A

公开(公告)日：1997-05-16

申请号：JP27248395

申请日：1995-10-20

Applicant: IBM

Inventor： YAMAZAKI SATORU ,  ISHIMOTO KENJI ,  KIGOSHI TSUTOMU

IPC: G06F1/32 ,  G06F15/02

Abstract: PROBLEM TO BE SOLVED: To inhibit transition from an ordinary power-on state to a power- saving mode that a user does not desire by the power-saving function of a personal computer and to make the power-saving function easier to use. SOLUTION: A computer system which enters power-saving mode unless there is user input from a keyboard, etc., for a certain time uses a circuit which detects writing to a video memory and a power source management control program which performs power-source management in cooperation with the said circuit. When the video memory is written, the shift to the power-saving mode is inhibited even if there is no input from the keyboard, etc., for the certain time.

公开(公告)号：JP2002312080A

公开(公告)日：2002-10-25

申请号：JP2002055192

申请日：2002-03-01

Applicant: IBM

Inventor： YAMAZAKI SATORU ,  ISHIMOTO KENJI ,  KIGOSHI TSUTOMU

IPC: G06F1/32

Abstract: PROBLEM TO BE SOLVED: To provide an improved power management device and method for a personal computer. SOLUTION: In a computer system shifting to a power saving mode when there is no user input from a keyboard and the like for a fixed period of time, a circuit detecting writing to a video memory and a power management controlling program for controlling power cooperating with the circuit are used. When writing to the video memory is detected, shifting to the power saving mode is prohibited even if there is no input from the keyboard and the like for the fixed period of time.