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. 03, 1979
Filed:
Jul. 06, 1977
Applicant:
Inventors:
Tadao Nojiri, Kariya, JP;
Akio Sugiura, Nagoya, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
235463 ; 235470 ; 3401 / ;
Abstract
A bar code recognition system in which a threshold value for discriminating each bar of bar codes is automatically corrected. Bar codes representing information are constituted by a combination of wide and narrow bars to be scanned and converted into a rectangular signal having a time width proportional to the width of each bar. In proportion to the total time widths of the rectangular signal generated in each scanning cycle, the threshold value with reference to which each bar width is discriminated is determined to enhance the recognition operation of the system.