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Browse Prior Art Database

Charge and Discharge Function in Notebook PC

IP.com Disclosure Number: IPCOM000110183D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 4 page(s) / 128K

Publishing Venue

IBM

Related People

Narita, I: AUTHOR [+3]

Abstract

Disclosed is a charge and discharge function in a notebook PC. A user can select one mode among a power saving mode, a charge mode, a discharge mode, and a charge/discharge mode by software. And the user can discharge/charge the battery without paying attention to that.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 53% of the total text.

Charge and Discharge Function in Notebook PC

       Disclosed is a charge and discharge function in a
notebook PC.  A user can select one mode among a power saving mode, a
charge mode, a discharge mode, and a charge/discharge mode by
software.  And the user can discharge/charge the battery without
paying attention to that.

      The proposed function has the following components:
      -  User interface
      -  Control MPU
      -  Main body, i.e., notebook PC with a power management
function
      -  Power supply

      The user interface is where the user inputs commands such as
charge, discharge/charge, etc.  In Fig. 1, the user interface is
offered by a menu screen on the display for the user to select.

      In Fig. 2, the control MPU does the power management including
the disable of the power saving and monitoring of the status.

      In Fig. 3, the main body has several functions to save power.
When the user operates with the system, the system is controlled so
that the battery life is lengthened.  But in the discharge mode for
cancellation of the memory effect, the power-saving function is
disabled so that the battery discharge time is shortened.

      In Fig. 4, the power supply is composed of the battery, the
external power such as an AC/DC adapter, the charger, switches such
as transistors, and voltage detectors.  The power supply transmits
the status to the control MPU and is controlled by the MPU.

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