Power supply control system for a portable computer

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3647081, G06F 100

Patent

active

052394956

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.

REFERENCES:
patent: 4667289 (1987-05-01), Yoshida et al.
patent: 4769764 (1988-09-01), Levanon
patent: 4788658 (1988-11-01), Hanebuth
patent: 4858162 (1989-08-01), Kieffer et al.
patent: 4945280 (1990-07-01), Beghelli
patent: 4984185 (1991-01-01), Saito
patent: 5008846 (1991-04-01), Inoue
patent: 5021983 (1991-06-01), Nguyen et al.
Toshiba T1600 Portable Personal Computer User's Manual (no date).
Toshiba T5100 Portable Personal Computer Reference Manual (No date).
Toshiba T5200 Portable Personal Computer Reference Manual (No date).
"User's Manual, Four-bit Microcontroller and Peripheral Memory, TLCS-47E/47/470/470A" (portions of title are in the Japanese language), pp. 5-211 through 5-223 and unnumbered final page, published by Toshiba Corporation, dated 1991.
Toshiba Desk Station I User's Manual, 1990.

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