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:
Aug. 01, 2006
Filed:
Dec. 29, 2005
Isao Iwaguchi, Tokyo, JP;
Hideo Miyazawa, Tokyo, JP;
Mitsuo Watanabe, Tokyo, JP;
Kozo Yamazaki, Tokyo, JP;
Masanori Ohkawa, Tokyo, JP;
Isao Iwaguchi, Tokyo, JP;
Hideo Miyazawa, Tokyo, JP;
Mitsuo Watanabe, Tokyo, JP;
Kozo Yamazaki, Tokyo, JP;
Masanori Ohkawa, Tokyo, JP;
Fujitsu Limited, Kawasaki, JP;
Fujitsu Frontech Limited, Tokyo, JP;
Abstract
A signal obtained by optically scanning a bar code is subjected to differentiation to obtain differential data. Peak-to-peak distances are calculated from the differential data. When a peak-to-peak ΔTx distance is y times of a basic width, frequency f(x,y) will be, f(x,y)=y/ΔTx. A frequency map is prepared from the frequencies calculated. Transition routes in which one frequency each is selected. from each of the peak-to-peak distances, are formed. A transition route for which an error in frequencies is the least is taken as the most suitable transition route. An average of the frequencies included in the transition route is taken as a frequency fof the basic width.