Power control device and method of controlling power of peripher

Details Power control device and method of controlling power of peripher Power control device and method of controlling power of peripher

1998-04-22

2000-08-15

Sheikh, Ayaz R.

Electrical computers and digital processing systems: support

Computer power control

Power conservation

713340, G06F 132

Patent

active

061051438

ABSTRACT:
A power control device of a computer system uses a universal serial bus (USB) hub for power control of a display monitor. The power control device includes: a rectifying section for converting an AC power of the display device into a DC voltage; a main SMPS (Switching Mode Power Supply) for supplying power to the display monitor after the DC voltage is switched and rectified; a microcomputer for determining the status of a power save mode to control the switching operation of the main SMPS; an auxiliary SMPS for supplying the power to the microcomputer when no power has been supplied from the USB hub; an auxiliary OFF controller for interrupting the operation of the auxiliary SMPS when the power has been applied from the USB hub; and an OFF controller for interrupting the operation of the main SMPS to execute a power OFF mode according to a DPMS.

REFERENCES:
patent: 5384721 (1995-01-01), Joto
patent: 5408668 (1995-04-01), Tornal
patent: 5410713 (1995-04-01), White et al.
patent: 5483464 (1996-01-01), Song
patent: 5652893 (1997-07-01), Ben-Meir et al.
patent: 5652895 (1997-07-01), Poisner
patent: 5675813 (1997-10-01), Holmdahl
patent: 5696978 (1997-12-01), Nishikawa

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