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. 22, 2011
Filed:
Dec. 03, 2007
Eric Lap Min Cheung, Epping, AU;
Stephen Farrar, Telopea, AU;
Nicole Ai Ling Lam, Lane Cove, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of encoding information in a document using a plurality of marks (), the information comprising first data and second data, the method comprising the steps of encoding the first data using a first plurality of arrays of modulated marks disposed in a corresponding first plurality of tiles () spaced apart from each other at a first repeat rate (); and encoding the second data using a second plurality of arrays of modulated marks disposed in a corresponding second plurality of tiles () spaced apart from each other at a second repeat rate (); wherein: the second repeat rate is different to the first repeat rate; and the second plurality of tiles are embedded within the first plurality of tiles.