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. 15, 2016
Filed:
Jun. 06, 2013
Keisoku Giken Co., Ltd., Yokohama-shi, Kanagawa, JP;
Seiichi Gohshi, Tokyo, JP;
KEISOKU GIKEN Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
An image is sharpened by using a frequency component higher than Nyquist frequency. An image enhancing deviceaccording to an embodiment of the present invention for generating an output image by sharpening an input image, includes: a filter unitconfigured to generate a first signal by eliminating at least a direct current component of a frequency component included in an input image signal representing the input image; a nonlinear processing unitconfigured to generate a second signal by carrying out, to the first signal, nonlinear processing asymmetric between a positive area and a negative area of the first signal; a limiterconfigured to generate a third signal by adjusting the second signal; and an adderconfigured to generate an output image signal representing the output image by adding the third signal to the input image signal.