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:
Nov. 12, 1991
Filed:
Apr. 19, 1991
Applicant:
Inventors:
Atsushi Suganuma, Kanagawa, JP;
Kayoko Ohsaki, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358455 ; 358443 ; 358448 ;
Abstract
An image signal is processed to grain digital image data by comparing digital random number data generated on the M-sequence coding theory and the digital image data with a binarizing digital comparator, and employing a signal produced by the comparison as grained binarized image data. The digital random number data are produced by a digital random number data generator comprising a random number generating circuit based on the M-sequences coding theory and an initial value presetting circuit for setting an initial value in said random number generating circuit.