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US 6,724,437 B2Granted
Method and device for adding noise to a video signal for improving a display of the video signal
AssigneeKoninklijke Philips Electronics N.V.
InventorsEric P. Funke, Jeroen H. C. J. Stessen, Age J. Van Dalfsen
Life of this patent
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Abstract
In a display driving method, noise is added (NG, AD) to a video signal before the video signal is subjected to a dithering operation (DC). The invention is preferably applied to render non-moving dither patterns invisible in a plasma display panel driving method in which the display signal is subjected to a (Floyd-Steinberg) dithering.
Claims5
A display driving method, comprising:
- furnishing a video signal;
- adding noise to said video signal to form an enhanced signal;
- and
- dithering said enhanced signal to form a display signal, wherein said noise adding step comprises adding only negative components of noise to said video signal.
1 more element
A display driving device, comprising:
- means for furnishing a video signal;
- means for generating a noise signal;
- means for adding said noise signal to said video signal to form an enhanced signal;
- and
- means for dithering said enhanced signal to form a display signal,
- wherein said generating means generates only negative components of noise, and said adding means adds said negative noise components to the video signal to form said enhance signal.
3 more elements
A display apparatus, comprising:
- means for furnishing a video signal;
- means for generating a noise signal;
- means for adding said noise signal to said video signal to form an enhanced signal;
- means for dithering said enhanced signal to form a display signal;
- and
- a display for displaying said display signal, wherein said generating means generates only negative components of noise, and said adding means adds said negative noise components to the video signal to form said enhance signal.
3 more elements
Dependencies are inferred from the claim text.