Current sensing bi-directional switch and plasma display...

Details Current sensing bi-directional switch and plasma display... Current sensing bi-directional switch and plasma display...

2008-07-22

2008-07-22

Tran, Henry N (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S060000, C345S061000, C345S068000, C345S069000, C323S277000, C323S282000, C327S108000, C327S387000

Reexamination Certificate

active

07403200

ABSTRACT:
A bi-directional switch comprising first and second semiconductor switching devices, a current sensor connected in series with the switching devices, thereby forming a series circuit, a driver circuit controlling the on/off operation of the first and second switching devices such that the first and second switching devices are substantially simultaneously turned on and off, the driver circuit turning the first and second switching devices on in response to a control input and turning the first and second switching devices off when current in the current sensor substantially drops to near a zero current. A discharge sustain driver circuit employing the bi-directional switches for a plasma display panel (PDP) is also described.

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