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. 14, 2013
Filed:
Nov. 17, 2009
Brendon Yenson, Connells Point, AU;
Scott Alexander Rudkin, Chatswood, AU;
Brendon Yenson, Connells Point, AU;
Scott Alexander Rudkin, Chatswood, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method (), an apparatus (), and a computer program product are disclosed for generating alignment marks. A basis pattern () and a high frequency component () are combined (). The basis pattern is defined such that a scaled and rotated version of the basis pattern correlated with the basis pattern is substantially equal to the auto-correlation of the basis pattern within a complex multiplicative constant. The high frequency component is of sufficient energy for cross correlation without detriment to the basis pattern. The basis pattern may be generated from a basis function, which may be a logarithmic radial harmonic function (LRHF). The combination is output as at least one alignment mark having an increased maximum frequency. The method () may further comprise printing the at least one alignment mark on a print medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile