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:
Mar. 17, 2020
Filed:
Apr. 15, 2019
Seiko Epson Corporation, Tokyo, JP;
Motoki Yoshizawa, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A controllerof an image reading deviceacquires first black reference data at a first time point with a light sourceoff, and stores the first black reference data in a reference data storageand at a second time point after the first time point, acquires with the light sourceoff and stores second black reference data in the reference data storageThe controllerstores in a scanning data storagewithout applying shading correction, scanning data read from a document between the first time point and second time point with the light sourceon. A shading correctorapplies shading correction using the first black reference data and second black reference data to the scanning data stored in the scanning data storage
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile