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:
Nov. 03, 2015
Filed:
Aug. 30, 2013
Panasonic Corporation, Osaka, JP;
Eiichi Nagaoka, Hyogo, JP;
Abstract
Dot mark decoding circuitry sets an initial value of a relative position of each of dot marks with respect to a corresponding lattice point; and then sequentially executes, in repetition, a calculation process of calculating a projective transformation matrix based on a position of each dot mark in a pixel coordinate system and a position obtained by adding the relative position to the position of a corresponding lattice point; a transformation process of transforming the position of each dot mark from the position in the pixel coordinate system to a position in a L coordinate system using the projective transformation matrix; a generation process of generating the relative position information based on the post-transformation position of each dot mark and the position of the corresponding lattice point; and an update process of updating the relative position in accordance with the relative position information.