Voltage detecting device

Details Voltage detecting device Voltage detecting device

2006-09-01

2008-12-02

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

Reexamination Certificate

active

07459941

ABSTRACT:
A device for detecting an interface voltage of a Universal Serial Bus (USB) interface. The device includes first and second voltage level indicators, and first and second control circuits. The first control circuit receives the interface voltage to generate a first control signal and drive the first voltage level indicator when the interface voltage level is less than a first voltage level. The second control circuit receives the interface voltage to generate a second control signal and drive the second voltage level indicator when the interface voltage level exceeds a second voltage level.

REFERENCES:
patent: 5982836 (1999-11-01), Sakae et al.
patent: 2004/0135619 (2004-07-01), Owen
patent: 2007/0030035 (2007-02-01), Komatsu et al.
patent: 2007/0085574 (2007-04-01), Lo et al.
patent: 2255063 (1997-05-01), None

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