Voltage detection systems and voltage detection circuits...

Details Voltage detection systems and voltage detection circuits... Voltage detection systems and voltage detection circuits...

2006-07-27

2009-12-01

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

C324S600000

Reexamination Certificate

active

07626583

ABSTRACT:
A voltage detection system comprising a first circuit board, a second circuit board, and a voltage detection circuit. The voltage detection circuit comprises a first connection unit, a second connection unit, a resistor, and a voltage detection unit. Dummy lines of the first and second connection units are coupled in series. When lines of the first and second connection units are not aligned to lines of the first and second circuit boards, an entirety equivalent impedance of the dummy lines is decreased. When detecting that the entirety of equivalent impedance is decreased to be less than a predetermined value, the voltage detection unit enables a control signal.

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patent: 6114852 (2000-09-01), Zhou et al.
patent: 6812908 (2004-11-01), Lim
patent: 7119783 (2006-10-01), Lim

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