PRE-EMPHASIS CIRCUIT
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United States of America Patent
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Issued Date -
Mar 30, 2017
app pub date -
Jul 25, 2016
filing date -
Sep 30, 2015
priority date (Note) -
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Abstract
A pre-emphasis circuit applied to a LCD panel is disclosed. The pre-emphasis circuit includes a digital-to-analog converting unit and a pre-emphasis control unit. The digital-to-analog converting unit includes a pre-emphasis switch. The digital-to-analog converting unit receives a data signal and a power reference level signal respectively and outputs an output signal. The pre-emphasis control unit is coupled to the digital-to-analog converting unit and used to selectively switch on or off the pre-emphasis switch to start or stop a pre-emphasis function performed on the output signal according to whether a grey-level code of the data signal is changed.
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