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:
Jun. 02, 1987
Filed:
Jan. 25, 1985
Applicant:
Inventors:
Mitsuhiko Yamada, Kyoto, JP;
Hideaki Kitamura, Osaka, JP;
Assignee:
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358284 ; 358 80 ; 358166 ;
Abstract
In forming a sharpness emphasis signal, accidental errors produced in digital processing of the image data of pixels in a matrix are cancelled by using look-up table memories to suppress the appearance of corresponding noises onto reproduction images. The invention further provides for use of a reduced number of bits in processing the data and particularly in processing sums of products used in the process, by providing for products to have substantially the same number of bits as the factors of the product.