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:
Sep. 01, 1998
Filed:
Dec. 17, 1996
Rosario A Bracco, Webster, NY (US);
George L Harer, Walworth, NY (US);
Sue K Lam, Rochester, NY (US);
Louis D Mailloux, Webster, NY (US);
Hoan N Nguyen, Fountain Valley, CA (US);
Cheryl A Pence, Buena Park, CA (US);
Hung M Pham, San Gabriel, CA (US);
Cathleen J Raker, Rochester, NY (US);
Farhad D Rostamian, Los Angeles, CA (US);
Robert R Thompson, Jr, Harbor City, CA (US);
Daniel D Truong, Hawthorne, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A lead edge lightening circuit which will lighten a scan line based on a seven by seven pixel area surrounding the current pixel. The area is divided into four sub-areas, each of four by four pixels, and each having the current pixel at one corner. Each sub-area is summed and compared to a threshold number. If the threshold number is equalled or exceeded by at least one of the four sums, an overlay bit, which can be white or black, is output. The current pixel is replaced by a white pixel if a white pixel has been output, otherwise the current pixel remains unchanged.