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:
Jan. 03, 1995
Filed:
May. 28, 1993
Yutaka Adachi, Sagamihara, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A bar code reader includes an imaging element for recording a two-dimensional bar code, a frame memory for storing a two-dimensional bar code image recorded by the imaging element, and a bar code reading-control unit which finds coordinates of four corners of the two-dimensional bar code image stored in the frame memory, finds equations of four straight lines passing through four sides of the two-dimensional bar code image, sets a plurality of scan lines at equal intervals between those two of the four straight lines which cross two portions corresponding to start and end codes of the two-dimensional bar code image, and further sets a plurality of sampling lines at equal intervals between remaining two straight lines extending along the two portions, respectively, and samples the two-dimensional bar code image at positions corresponding to intersections between the scan lines and the sampling lines, whereby bar code information is read out from the two-dimensional bar code image.