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. 04, 1999
Filed:
Apr. 11, 1997
Kimiaki Sano, Kawanishi, JP;
Junichi Hada, Katano, JP;
Abstract
The front end position of the leads of a leaded part can be accurately detected even from image data having a noise signal mixed therein. A method including a step for defining, with respect to an electronic part having a plurality of leads to be packaged on a board by an electronic parts packaging plant, a two-dimensional test window having a rectangular coordinate system with the X-axis extending parallel with the direction in which the leads are juxtaposed and the Y-axis perpendicular to the X-axis; a lead emphasizing step for emphasizing the light intensity of the lead regions of image data obtained by photographing the electronic part in the test window; a data producing step for producing one-dimensional histogram data which indicates the distribution of light intensity along the Y-axis on the basis of the image data after having the light intensity of its lead regions emphasized; and a positioning step for calculating the Y-coordinate of the lead position in the test window on the basis of the histogram data thereon.