The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 1992
Filed:
Jan. 02, 1990
Yee S Ng, Fairport, NY (US);
Hwai T Tai, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Method and apparatus for converting gray-scale pixel information into data for rendering dots by a printer, video display, or similar device. A form of error diffusion is used wherein a thresholding error produced during the conversion process for a particular dot is propagated to one or more adjacent dots. The propagated error modifies the comparisons made for the adjacent dots and can be converted into lightness space to linearize the error. The error itself is modified when there is overlap of the propagating dot with an adjacent dot. The overlap modification is dependent upon the density levels being rendered and the amount of overlap between the dots.