Silicon Valley Patent Agency
Method and apparatus for reducing flickers in video signal conversions
 The present invention discloses a system for adaptively reducing flickers in converting non-interlaced video signals to interlaced video signals. To preserve the original image quality in the non-interlaced video signals, the disclosed system examines the pixel values in at least two adjacent lines to decide if a reduction process should be turned on. If there is a need, the reduction process further examines the difference in the pixels from the adjacent lines to determine how to adjust a corresponding output to eliminate flickers in the resultant converted video signals. The adjusting means is based on an adjusting factor or the calculated difference between pixels which is further used in a function to eventually produce a converted interlaced signal with minimum visual errors. 
Aitech International Corp.
Y H H
Y10S H04N H04N
additional inventional inventional
Huang-Jen Jan-Kwei Jack
Chen Li