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. 08, 2012
Filed:
Nov. 11, 2008
Applicant:
Sugitaka Oteki, Tokyo, JP;
Inventor:
Sugitaka Oteki, Tokyo, JP;
Assignee:
Ricoh Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/409 (2006.01); G06K 9/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A white reference member is used to obtain white reference data. An image sensor scans the white reference member line by line to obtain a plurality of lines of white reference data. A skipping unit skips the white reference data with a predetermined skipping ratio to generate a skipped white reference data. A dust detecting unit detects a dust between the white reference member and the image sensor based on the skipped white reference data.