Patent ID: 7359086
Filing Date: 2008-04-15
Classification: H04N

Abstract:
1. A computer-based color-image printing system comprising, a printing device, an image pre-printing previewer operable to pre-display what will effectively be the final printed appearance of a color image selected for prospective printing, a print driver operatively associated both with said printing device and with said previewer, user color-adjustment controls furnished by said driver, including individual controllers each relating to at least one of the collection of color parameters drawn from the list including (a) Red, Green and Blue color offset, (b) Lightness offset, (c) Chroma, and (d) Gamma, each controller enabling, throughout a 0–100 adjustment range, free, selective, plural-color-parameter adjustments by a user with respect to such a selected and pre-displayed color image, and color-parameter anti-clipping structure operatively associated with said controls, operable in an asymptotic-like manner, regardless of collective and/or interactive nominal effects of parameter adjustments performed by a user, to inhibit any such clipping in the resulting adjusted color image sent by said driver ultimately to said printing device for printing, said anti-clipping structure effectively performing in a staged manner, with first-level attention being addressed to issues involving Chroma, and second-level attention being addressed to any and all other adjusted parameters which are then treated in light of the result of such first-level attention.