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. 24, 1998
Filed:
Jan. 06, 1997
Vadlamannati Venkateswar, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method for printing grayscale images that compensates for problems in the printing process. The presence of a defective element on a spatial light modulator (12) is compensated for using a background value. The background value is determined by the number of defective elements stuck in the ON position, and that value is added to all of the exposure values of the elements, creating exposure data. In one embodiment, a defect intensity value is subtracted from those pixel exposure values affected by defective elements. The exposure data is used to generate microimages on a photoreceptive drum, the data is decremented and the steps are repeated until an entire image has been produced.