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. 14, 1988
Filed:
Feb. 26, 1987
Hiroshi Shibazaki, Kyoto, JP;
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Abstract
An image data extracting circuit extracts multi-gradation image data obtained by reading a binary original by prescribed image regions about a pixel to be processed and latches the same. A linear edge detecting circuit detects a pixel to be processed corresponding to a linear edge portion of the original that is in conformity to the scanning direction by mutually comparing the gradients of the respective latched pixels. The circuit outputs a signal expressing linear edge patterns thereof and a signal expressing the gradient, i.e., density thereof. A second high-resolving circuit receives the signals to generate high-resolution binary image data forming a smooth linear edge having a resolution higher than the read resolution with an average density in response to the gradient of the pixel to be processed.