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. 05, 2001
Filed:
Jul. 15, 1998
Hyuk-jae Lee, Seoul, KR;
Goo-soo Gahang, Seoul, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
Disclosed are a method and an apparatus for correcting an alignment error of a scanning head of a shuttle type scanner capable of compensating an error occurred in a manufacturing process of a product or the alignment error generated by an impact applied in use. When an alignment error correction mode is selected at a preset time, the scanning head is moved to a position facing a correcting pattern formed on a correction plate. The correcting pattern is scanned through the scanning head and the alignment error is calculated from the scanned pattern image data using a predetermined operation function. After performing a first correction to the calculated alignment error by moving first and last pixels of the image data, a second correction to the alignment error is performed by applying a preset correction function to remaining pixels excluding the first and last pixels. As a result, unnecessary operations occurred in correcting the alignment error mechanically are removed, thereby increasing the productivity. In addition, since the alignment error within the permitted limit is corrected by the software, a stable image data without any distortion can be obtained.