Method for compensating perturbations caused by demultiplexing an analog signal in a matrix display
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United States of America Patent
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Dec 20, 2005
Grant Date -
N/A
app pub date -
Nov 27, 2000
filing date -
Nov 30, 1999
priority date (Note) -
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Abstract
The present invention relates to a method of compensating for the disturbances due to the demultiplexing of an analogue signal with regard to a circuit comprising N data lines, wherein the demultiplexing is carried out by sample-and-hold circuits whose input receives the analogue signal and whose output is connected to one of the N data lines, the N sample-and-hold circuits being operated in succession by a sampling signal (ECHi). During the application of the sampling signal (ECHi, V1) to one of the sample-and-hold circuits, an opposite compensation level (V3) which is lower than the level of the sampling signal is applied to the N-1 sample-and-hold circuits. Application in particular to LCD screens.
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