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. 28, 1989
Filed:
Aug. 25, 1987
Applicant:
Inventors:
Katsuya Yamaguchi, Kyoto, JP;
Hideaki Kitamura, Ibaraki, JP;
Assignee:
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358283 ; 356298 ;
Abstract
Gradation levels of an image to be recorded are expressed by gradation data having integral parts and decimal parts. Random numbers are composed with the decimal parts to provide composite values. When the composite value exceeds, the quantity is added to the value of the integral part. The decimal parts are accumulated along the direction of an array of pixels, to provide accumulated values. Also when the accumulated value exceeds, the quantity is added to the value of the integral part to provide a modified integral part. The modified integral parts are employed as gradation data in image recording.