Power-on detector, operating method of power-on detector and...

Details Power-on detector, operating method of power-on detector and... Power-on detector, operating method of power-on detector and...

2009-10-22

2011-11-08

Yoha, Connie (Department: 2827)

Static information storage and retrieval

Powering

C365S228000, C365S189090

Reexamination Certificate

active

08054708

ABSTRACT:
A power-on detector supplied with a power supply voltage from an external source and detects a variation of the power supply voltage. The operating method of the power-on detector comprises calculating the slope of the rise of power supply voltage from a first voltage to a second voltage higher than the first voltage; and calculating the expected time for the power supply voltage to reach a target voltage level, based on the calculated slope.

REFERENCES:
patent: 6862236 (2005-03-01), Maruyama
patent: 7852129 (2010-12-01), Do
patent: 7929350 (2011-04-01), Hwang
patent: 2004/0071036 (2004-04-01), Lee
patent: 2005/0275986 (2005-12-01), Cho
patent: 2001-237684 (2001-08-01), None
patent: 1020040034312 (2004-04-01), None
patent: 1020050118751 (2005-12-01), None

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