Apparatus and method for displaying PMS information in a portabl

Details Apparatus and method for displaying PMS information in a portabl Apparatus and method for displaying PMS information in a portabl

1995-12-29

1998-05-26

Harvey, Jack B.

39575002, 39575003, 39575004, 39575005, 39575006, 39575007, 39575008, G06F 1300, G06F 126

Patent

active

057581720

ABSTRACT:
An apparatus and method for displaying power management system (PMS) information in a portable computer includes a video random access memory (RAM) for storing the power management system (PMS) information as a preset data configuration. A keyboard controller outputs a signal corresponding to an operating state represented by a user key selection and a system interrupt signal. A power management system (PMS) controller outputs a corresponding signal after sensing a present charging/discharging state of the voltage of a battery. A real-time clock (RTC) stores data corresponding to the mode and level of the power management system (PMS) set during an initial set-up step of computer operation. A video controller reads the power management system (PMS) information stored in the video random access memory (RAM), and displays the information as a preset data configuration on a display unit when a corresponding key signal is output from the keyboard controller. A central processing unit (CPU) reads the present battery level from the power management system (PMS) controller, reads the mode and level of the power management system (PMS) stored in the real-time clock (RTC) when an interrupt signal is generated from the keyboard controller, and controls the operation of displaying the power management system (PMS) information.

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