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:
May. 15, 2001
Filed:
Jul. 27, 1998
Applicant:
Inventors:
Akio Kojima, Neyagawa, JP;
Yasuhiro Kuwahara, Osaka, JP;
Masao Kataoka, Moriguchi, JP;
Teruyuki Naka, Izumi, JP;
Atsushi Sogami, Sanda, JP;
Toshiaki Koga, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/04 ;
U.S. Cl.
CPC ...
H04N 1/04 ;
Abstract
In an image processing apparatus and an image reading apparatus in accordance with the present invention, a density difference detection circuit,detects the density differences between input image data,and storage data,stored in an image memory,at an overlapping scanning area read by overlap scanning, a density correction circuit,corrects the gray levels of the input image data,on the basis of the detected density differences, and a mapping circuit,stores correction data,in the image memory