Encoding system for error diffusion dithering

Details Encoding system for error diffusion dithering Encoding system for error diffusion dithering

2007-01-09

2007-01-09

Lee, Michael H. (Department: 2622)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S574000, C345S616000, C345S597000, C382S252000

Reexamination Certificate

active

10384134

ABSTRACT:
An error diffusion system in accordance with an embodiment of the present invention adjusts the color depth of an RGB signal using error diffusion without the using an expensive frame buffer. Specifically, a color depth adjustment unit in accordance with the present invention can perform error diffusion on an RGB signal using two error buffers, which are smaller in memory size than typical line buffers that would be used for the video stream.

REFERENCES:
patent: 4955065 (1990-09-01), Ulichney
patent: 5055942 (1991-10-01), Levien
patent: 5570461 (1996-10-01), Yokomizo
patent: 5596349 (1997-01-01), Kobayashi et al.
patent: 5787206 (1998-07-01), Williams et al.
patent: 6771832 (2004-08-01), Naito et al.

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