Method and apparatus for reducing flickers in video signal conve

Details Method and apparatus for reducing flickers in video signal conve Method and apparatus for reducing flickers in video signal conve

1997-04-01

1999-12-14

Lee, Michael H.

Television

Format conversion

Field rate type flicker compensating

348441, 348446, 348910, H04N 701

Patent

active

060024429

ABSTRACT:
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.

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