Image Display Device Using Virtual Partition Error Diffusion

The patent divides the pixel array into multiple independent processing regions (e.g., 4×4 blocks). Error diffusion is performed separately within each region, preventing error propagation across the entire image. This segmentation resolves the contradiction by maintaining local image quality while eliminating the widespread buzzing effect that occurs with global error diffusion.

The patent applies different processing characteristics to different regions by confining error diffusion within local blocks. Each region maintains its own error diffusion characteristics independent of other regions, allowing local optimization of image quality while preventing harmful buzzing from propagating globally across the moving image.

By segmenting the image into discrete processing blocks, the patent confines error diffusion to local areas. This maintains adequate gradation accuracy within each block while limiting the spatial extent of error influence, directly resolving the contradiction between accuracy and influence range.

The patent applies error diffusion partially rather than globally - performing it within each local block but not across block boundaries. This partial application maintains sufficient gradation accuracy where needed while avoiding the excessive spread of error influence that would occur with complete global diffusion.