Power supply control system for a portable computer

U.S. Patent Number: 5383140

Abstract: A power supply control system for a portable computer having a central processing unit (CPU), and operable in response to power supplied from a rechargeable battery or an alternating current (AC) adapter. The control system includes a charge unit for charging the rechargeable battery; current detectors for detecting power status; and a power control microprocessor for controlling the charge unit independently of the CPU in response to a detected power status.

Inventors: Nanno; Nobuyuki (Tokyo, JP), Akashi; Kazuo (Tokyo, JP), Seimiya; Hiromi (Tokyo, JP)

Assignee: Kabushiki Kaisha Toshiba (Kanagawa, JP)

Application Number: 08/111,400

Issued: 1995-01-17

Expired: 2007-01-17

Classes: 713/321 ; 200/43.01

Field of search: 364/708.1 200/43.01,43.18,43.22,318,322,327 D13/171,162

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