Electromagnetic interference prevention apparatus for flat...

Details Electromagnetic interference prevention apparatus for flat... Electromagnetic interference prevention apparatus for flat...

2011-07-05

2011-07-05

Lao, Lun-Yi (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

C345S055000, C345S213000, C315S085000, C348S819000, C375S130000

Reexamination Certificate

active

07973780

ABSTRACT:
An electromagnetic interference (EMI) prevention apparatus for a flat panel display which is capable of modulating the frequency of an input clock signal using a spread spectrum clocking method to increase the frequency of the clock signal and reduce the amplitude thereof so as to reduce EMI by a clock signal generated from a format converter of the flat panel display. The amount of electromagnetic energy radiated from a signal source of the flat panel display can be reduced to eradicate the root of an EMI problem, thus excluding the use of a conventional shielding plate device.

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Japanese Office Action dated May 20, 2008.

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