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:
Sep. 22, 1998
Filed:
Oct. 18, 1996
Shinichi Sato, Kawasaki, JP;
Isao Iwaguchi, Kawasaki, JP;
Ichiro Shinoda, Kawasaki, JP;
Tomoyuki Kashiwazaki, Kawasaki, JP;
Fujitu Limited, Kawasaki, JP;
Abstract
A binary device suitable for a bar code reader performs a binary signal conversion, without depending on a laser beam scanning rate. The binary device includes differentiating circuitry for differentiating an analog signal including a binary code signal, peak point detecting circuitry for detecting the positive and negative peak points of a differential signal from the differentiating circuitry, first gate signal outputting circuitry for outputting a first gate signal when the differential signal is more than a first preset level, second gate signal outputting circuitry for outputting a second gate signal when the differential signal is less than a second preset level, positive peak point detection sequential circuitry for detecting a positive peak point from the peak point detecting circuitry when a signal variation in the first gate signal is detected, and negative peak point detection sequential circuitry for detecting a negative peak point from the peak point detecting circuitry after a change in the second gate signal is detected.