Patent ID: 6121962
Filing Date: 2000-09-19
Classification: G06F,G09G,Y02D

Abstract:
A computer system for controlling a display, the computer system having a central processing unit, a memory, a system bus and a display, comprising:a power controller for converting an operation mode of the computer system into a power management mode, said power management mode representing one of a power-on mode, a standby mode, a graphic off mode, and a suspend mode according to an access state of the computer system, said power controller for converting the computer system into said standby mode when power is applied to the computer system and there is no access to the computer system, for converting the computer system to said graphic off mode in which a screen-display state of said display is controlled according to input of a password, and for converting the computer system into said suspend mode when the computer system is not accessed for a predetermined time during said graphic off mode; anda screen controller for converting the screen display state of said display according to a designated said power management mode, and said screen controller for controlling the screen display state of said display according to input of a password when the computer system is accessed in said graphic off mode, the computer system checking an input password when entered by a user in said graphic off mode and, when the input password entered in said graphic off mode is a correct password, the computer system by said screen controller then controlling the screen display state to permit a visual display on said display.