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:
Apr. 20, 2004
Filed:
Feb. 20, 2002
Hiroyoshi Takeuchi, Aichi-ken, JP;
Nobuyuki Teraura, Tokai, JP;
Denso Corporation, Kariya, JP;
Abstract
A data code label including a QR code and an ID tag including a memory having an identification code area and a decode data writing area. A data code in the QR code showing an error in decoding is corrected and stored in the memory in the ID tag while the degree of defection of the QR code is low. When the defects advance, the error rate will increase. If the error occurs after advance of defects, the decode data in the memory is read when the error is detected. If the decode data cannot be read, the error correction is effected. If the error rate is higher than a reference, the decode data is obtained from the memory. If this decreases the error rate under the reference, the error correction is effected.