Method for providing priority to an ac adaptor if the input...

Details Method for providing priority to an ac adaptor if the input... Method for providing priority to an ac adaptor if the input...

2006-01-03

2006-01-03

Lee, Thomas (Department: 2185)

Electrical computers and digital processing systems: support

Computer power control

C713S323000, C713S340000

Reexamination Certificate

active

06983383

ABSTRACT:
A power supply control device is provided with a first power supply input terminal to which a power supply is provided and a second power supply input terminal to which a power supply is provided. A power supply input detection unit detects an instance when the input of the second power supply input terminal is above a predetermined value and then a switch unit cuts off power supplied from the first power supply input terminal and activates power supply from the second power supply input terminal when the input from the second power supply input terminal is above a predetermined value according to the power supply input detection unit. A power supply processor processes a power supply supplied by way of the first or second power supply input terminal.

REFERENCES:
patent: 3631257 (1971-12-01), Behr et al.
patent: 4044268 (1977-08-01), Hammel et al.
patent: 5517153 (1996-05-01), Yin et al.
patent: 5818203 (1998-10-01), Narita
patent: 5898234 (1999-04-01), Kitagawa
patent: 6295569 (2001-09-01), Shimura et al.
patent: 10108052 (1998-04-01), None
patent: 10126972 (1998-05-01), None
Trotman et al, A Rechargeable and Portable AC Power Supply with the Minimum of Electronic Components, 1992 IEEE, pp. 1015-1018.

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