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:
Feb. 17, 2009
Filed:
Dec. 29, 2004
Antti Kemppainen, Oulu, FI;
Esko Strömmer, Oulo, FI;
Heikki Huomo, Oulu, FI;
Raimo Korhonen, Tampere, FI;
Antti Kemppainen, Oulu, FI;
Esko Strömmer, Oulo, FI;
Heikki Huomo, Oulu, FI;
Raimo Korhonen, Tampere, FI;
Nokia Corporation, Helsinki, FI;
Abstract
A method for reading a code, which code comprises code elements and the first part of the code elements is substantially conductive and the conductivity of the second part is substantially different from that of the first part, in which method the reader couples to the code in a capacitive manner, in which case the signal level of the signal formed by the reader varies according to the conductivity of the code element, and a correction factor is determined of at least one code element for correcting the signal. In addition, the invention relates to a code reader and electric ink.